BGP

Border Gateway Protocol disingkat BGP adalah inti dari protocol routing internet.

Protocol ini yang menjadi backbone dari jaringan Internet dunia. BGP adalah protokol routing inti dari Internet yg digunakan untuk melakukan pertukaran informasi routing antar jaringan.

BGP dijelaskan dalam RFC4271. BGP bekerja dengan cara memetakan sebuah tabel IP network yang menunjuk ke jaringan yg dapat dicapai antar AS (Autonomous System). Hal ini digambarkan sebagai sebuah protocol path vector.  BGP tidak menggunakan metrik IGP(Interior Gateway Protocol) tradisional, tapi membuat routing decision berdasarkan path, network policies, dan atau ruleset.

BGP mendukung Class Inter-Domain Routing dan menggunakan route aggregation untuk mengurangi ukuran tabel routing. BGP diciptakan untuk menggantikan protokol routing EGP yang mengijinkan routing secara tersebar sehingga tidak harus mengacu pada satu jaringan backbone saja.

Attribute dari BGP ada beberapa yaitu :

1. Weight (tertinggi )
2. Local Preference (tertinggi)
3. Locally Originated
4. AS-Path (terendah)
5. Origin (IGP > EGP > ?)
6. MED  (terendah)

Setelah penjelasan di atas berikut beberapa lab yang terkait dengan BGP, terutama BGP di dunia CCIE RS.

• iBGP Peering

Konfigurasi Dasar :

R1(config)#int fa0/0

R1(config-if)#ip add 12.12.12.1 255.255.255.0

R1(config-if)#no sh

R1(config-router)#int lo 0

R1(config-if)#ip add 1.1.1.1 255.255.255.255

R1(config-if)#router bgp 12

R1(config-router)#nei 12.12.12.2 remote-as 12

R1(config-router)#net 1.1.1.1 mask 255.255.255.255

Lakukan konfigurasi yang sama juga untuk router kedua, dengan menggunakan loopback 2.2.2.2/32.

Cek route table :

R1#sh ip bgp sum

BGP router identifier 12.12.12.1, local AS number 12

BGP table version is 3, main routing table version 3

2 network entries using 240 bytes of memory

2 path entries using 104 bytes of memory

3/2 BGP path/bestpath attribute entries using 372 bytes of memory

0 BGP route-map cache entries using 0 bytes of memory

0 BGP filter-list cache entries using 0 bytes of memory

Bitfield cache entries: current 1 (at peak 1) using 32 bytes of memory

BGP using 748 total bytes of memory

BGP activity 2/0 prefixes, 2/0 paths, scan interval 60 secs

Neighbor        V    AS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down  State/PfxRcd

12.12.12.2      4    12       7       7        3    0    0 00:03:27        1

Cek route table :

R1#sh ip bgp

BGP table version is 3, local router ID is 12.12.12.1

Status codes: s suppressed, d damped, h history, * valid, > best, i – internal,

r RIB-failure, S Stale

Origin codes: i – IGP, e – EGP, ? – incomplete

Network          Next Hop            Metric LocPrf Weight Path

*> 1.1.1.1/32       0.0.0.0                  0         32768 i

*>i2.2.2.2/32       12.12.12.2               0    100      0 i

R1#sh ip route bgp

2.0.0.0/32 is subnetted, 1 subnets

B       2.2.2.2 [200/0] via 12.12.12.2, 00:07:25

Cek ping :

R1#ping 2.2.2.2

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 2.2.2.2, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 28/47/64 ms

 

• IBGP Peering  – Loopback

Topologi yang digunakan masih sama dengan lab di atas.

command network dan neighbor di router bgp dihapus kemudian tambahkan command berikut :

R2(config)#router rip

R2(config-router)#ver 2

R2(config-router)#net 2.0.0.0

R2(config-router)#net 12.0.0.0

R2(config-router)#exit

R2(config)#router bgp 12

R2(config-router)#nei 1.1.1.1 remote 12

R2(config-router)#nei 1.1.1.1 update-source lo0

Lalu tambahkan subnet baru kedalam router bgp :

R2(config-if)#int lo1

R2(config-if)#ip add 22.22.22.22 255.255.255.255

R2(config-if)#no sh

R2(config-if)#router bgp 12

R2(config-router)#net 22.22.22.22 mask 255.255.255.255

Cek ping :

R1#ping 22.22.22.22

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 22.22.22.22, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 28/59/104 ms

R1#sh ip bgp sum

BGP router identifier 12.12.12.1, local AS number 12

BGP table version is 7, main routing table version 7

2 network entries using 240 bytes of memory

2 path entries using 104 bytes of memory

3/2 BGP path/bestpath attribute entries using 372 bytes of memory

0 BGP route-map cache entries using 0 bytes of memory

0 BGP filter-list cache entries using 0 bytes of memory

Bitfield cache entries: current 1 (at peak 2) using 32 bytes of memory

BGP using 748 total bytes of memory

BGP activity 4/2 prefixes, 4/2 paths, scan interval 60 secs

Neighbor        V    AS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down  State/PfxRcd

2.2.2.2         4    12       7       7        7    0    0 00:02:07        1

R1#sh ip bgp

BGP table version is 7, local router ID is 12.12.12.1

Status codes: s suppressed, d damped, h history, * valid, > best, i – internal,

r RIB-failure, S Stale

Origin codes: i – IGP, e – EGP, ? – incomplete

Network          Next Hop            Metric LocPrf Weight Path

*> 11.11.11.11/32   0.0.0.0                  0         32768 i

*>i22.22.22.22/32   2.2.2.2                  0    100      0 i

R1#sh ip route bgp

22.0.0.0/32 is subnetted, 1 subnets

B       22.22.22.22 [200/0] via 2.2.2.2, 00:00:33

 

• eBGP Peering

konfigurasi untuk eBGP peering :

R2(config)#int lo0

R2(config-if)#ip add 2.2.2.2 255.255.255.255

R2(config-if)#no sh

R2(config-if)#int s0/0

R2(config-if)#ip add 23.23.23.2 255.255.255.0

R2(config-if)#no sh

R2(config-if)#router bgp 12

R2(config-router)#nei 23.23.23.3 remote 3

R2(config-router)#net 2.2.2.2 mask 255.255.255.255

Lakukan hal yang sama pada router R3 dengan menggunakan loopback 3.3.3.3/32.

Cek ping :

R2#ping 3.3.3.3

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 3.3.3.3, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 12/39/76 ms

Cek route table :

R2#sh ip bgp sum

BGP router identifier 2.2.2.2, local AS number 12

BGP table version is 3, main routing table version 3

2 network entries using 240 bytes of memory

2 path entries using 104 bytes of memory

3/2 BGP path/bestpath attribute entries using 372 bytes of memory

1 BGP AS-PATH entries using 24 bytes of memory

0 BGP route-map cache entries using 0 bytes of memory

0 BGP filter-list cache entries using 0 bytes of memory

Bitfield cache entries: current 1 (at peak 1) using 32 bytes of memory

BGP using 772 total bytes of memory

BGP activity 2/0 prefixes, 2/0 paths, scan interval 60 secs

Neighbor        V    AS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down  State/PfxRcd

23.23.23.3      4     3       7       7        3    0    0 00:03:42        1

R2#sh ip bgp

BGP table version is 3, local router ID is 2.2.2.2

Status codes: s suppressed, d damped, h history, * valid, > best, i – internal,

r RIB-failure, S Stale

Origin codes: i – IGP, e – EGP, ? – incomplete

Network          Next Hop            Metric LocPrf Weight Path

*> 2.2.2.2/32       0.0.0.0                  0         32768 i

*> 3.3.3.3/32       23.23.23.3               0             0 3 i

 

• eBGP – Loopback – eBGP Multihop

Topologi yang dipakai sama dengan lab sebelumnya.

konfigurasi berikut :

R2(config)#router eigrp 2

R2(config-router)#net 23.23.23.0 0.0.0.255

R2(config-router)#net 2.2.2.2 0.0.0.0

R2(config)#router bgp 12

R2(config-router)#nei 3.3.3.3 remote-as 3

R2(config-router)#nei 3.3.3.3 update-source lo0

R2(config-router)#nei 3.3.3.3 ebgp-multihop

Lakukan hal yang sama untuk R3 dan tambahkan int lo1 di R2 :

R2(config)#int lo1

R2(config-if)#ip add 22.22.22.22 255.255.255.255

R2(config-if)#no sh

R2(config-if)#router bgp 12

R2(config-router)#net 22.22.22.22 mask 255.255.255.255

Cek ping :

R3#ping 22.22.22.22

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 22.22.22.22, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 1/30/80 ms

Cek route table :

R3#sh ip bgp

BGP table version is 7, local router ID is 3.3.3.3

Status codes: s suppressed, d damped, h history, * valid, > best, i – internal,

r RIB-failure, S Stale

Origin codes: i – IGP, e – EGP, ? – incomplete

Network          Next Hop            Metric LocPrf Weight Path

*> 22.22.22.22/32   2.2.2.2                  0             0 12 i

*> 33.33.33.33/32   0.0.0.0                  0         32768 i

 

• BGP Next-Hop-Self

Masih sama dengan topologi sebelumnya.

Konfigurasikan iBGP peering antara router R1 dan R2.

cek route table :

R1(config-router)#do sh ip bgp

BGP table version is 4, local router ID is 11.11.11.11

Status codes: s suppressed, d damped, h history, * valid, > best, i – internal,

r RIB-failure, S Stale

Origin codes: i – IGP, e – EGP, ? – incomplete

Network          Next Hop            Metric LocPrf Weight Path

*>i22.22.22.22/32   2.2.2.2                  0    100      0 i

*>i33.33.33.33/32   3.3.3.3                  0    100      0 3 i

disini terlihat bahwa ip loopback 1 R3 diterima oleh R1 lewat ip address loopback 0 R3. Hal ini salah karena ip address lo0 R3 seharusnya tidak bisa direach oleh R1.

maka tambahkan command berikut :

R2(config)#router bgp 12

R2(config-router)#nei 1.1.1.1 next-hop-self

Cek route table :

R1(config-router)#do sh ip bgp

BGP table version is 5, local router ID is 11.11.11.11

Status codes: s suppressed, d damped, h history, * valid, > best, i – internal,

r RIB-failure, S Stale

Origin codes: i – IGP, e – EGP, ? – incomplete

Network          Next Hop            Metric LocPrf Weight Path

*>i22.22.22.22/32   2.2.2.2                  0    100      0 i

*>i33.33.33.33/32   2.2.2.2                  0    100      0 3 i

Cek ping :

R1(config-router)#do ping 33.33.33.33

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 33.33.33.33, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 28/52/116 ms

 

• BGP Authentication

Masih dengan topologi yang sama seperti sebelumnya.

BGP hanya support autentikasi dengan menggunakan MD5 saja.

Konfigurasinya :

R2(config-router)#router bgp 12

R2(config-router)#nei 1.1.1.1 password 0 RAHASIA

R1(config-router)#router bgp 12

R1(config-router)#nei 2.2.2.2 password 0 RAHASIA

 

• BGP Route Reflector

Hilangkan konfigurasi next-hop-self dari R3, karena akan dilakukan route reflector.

Konfigurasi di R1, R2 dan R3.

R1(config-router)#router bgp 12

R1(config-router)#nei 2.2.2.2 remote 12

R1(config-router)#nei 2.2.2.2 update lo0

R1(config-router)#nei 2.2.2.2 route-reflector-client

R1(config-router)#nei 3.3.3.3 remote 12

R1(config-router)#nei 3.3.3.3 update lo0

R1(config-router)#nei 3.3.3.3 route-reflector-client

R2(config-router)#router bgp 12

R2(config-router)#nei 1.1.1.1 remote 12

R2(config-router)#nei 1.1.1.1 update lo0

R3(config-router)#router bgp 12

R3(config-router)#nei 1.1.1.1 remote 12

R3(config-router)#nei 1.1.1.1 update lo0

Cek route table :

R1#sh ip bgp sum

BGP router identifier 11.11.11.11, local AS number 12

BGP table version is 4, main routing table version 4

3 network entries using 360 bytes of memory

3 path entries using 156 bytes of memory

3/2 BGP path/bestpath attribute entries using 372 bytes of memory

1 BGP AS-PATH entries using 24 bytes of memory

0 BGP route-map cache entries using 0 bytes of memory

0 BGP filter-list cache entries using 0 bytes of memory

Bitfield cache entries: current 1 (at peak 1) using 32 bytes of memory

BGP using 944 total bytes of memory

BGP activity 3/0 prefixes, 3/0 paths, scan interval 60 secs

Neighbor        V    AS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down  State/PfxRcd

2.2.2.2         4    12       5       7        4    0    0 00:01:12        1

3.3.3.3         4    12       6       7        4    0    0 00:00:35        2

Cek ping :

R1#ping 44.44.44.44

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 44.44.44.44, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 60/138/224 ms

 

• BGP Confederation

 

R1, R2,R3,R4 dan R5 menggunakan AS 12, dan R6 menggunakan AS 3.

R1 dan R4 menggunakan AS Confederation 12001, R2 dan R5 menggunakan AS confederation 12002, dan R3 menggunakan AS Confederation 12003.

Konfigurasi R1 :

interface Loopback0

ip address 1.1.1.1 255.255.255.255

!

interface FastEthernet0/0

ip address 12.12.12.1 255.255.255.0

!

interface FastEthernet0/1

ip address 14.14.14.1 255.255.255.0

!

router bgp 12001

bgp log-neighbor-changes

bgp confederation identifier 12

bgp confederation peers 12002

network 1.1.1.1 mask 255.255.255.255

neighbor 12.12.12.2 remote-as 12002

neighbor 14.14.14.4 remote-as 12001

neighbor 14.14.14.4 next-hop-self

Konfigurasi R4 :

interface Loopback0

ip address 4.4.4.4 255.255.255.255

!

interface FastEthernet0/0

ip address 14.14.14.4 255.255.255.0

!

router bgp 12001

no synchronization

bgp log-neighbor-changes

bgp confederation identifier 12

network 4.4.4.4 mask 255.255.255.255

neighbor 14.14.14.1 remote-as 12001

Konfigurasi R2 :

interface Loopback0

ip address 2.2.2.2 255.255.255.255

!

interface FastEthernet0/0

ip address 12.12.12.2 255.255.255.0

!

interface Serial0/0

ip address 25.25.25.2 255.255.255.0

!

interface FastEthernet0/1

ip address 23.23.23.2 255.255.255.0

!

router bgp 12002

bgp log-neighbor-changes

bgp confederation identifier 12

bgp confederation peers 12001 12003

network 2.2.2.2 mask 255.255.255.255

neighbor 12.12.12.1 remote-as 12001

neighbor 23.23.23.3 remote-as 12003

neighbor 25.25.25.5 remote-as 12002

neighbor 25.25.25.5 next-hop-self

Konfigurasi R5 :

interface Loopback0

ip address 5.5.5.5 255.255.255.255

!

interface Serial0/0

ip address 25.25.25.5 255.255.255.0

!

router bgp 12002

bgp log-neighbor-changes

bgp confederation identifier 12

network 5.5.5.5 mask 255.255.255.255

neighbor 25.25.25.2 remote-as 12002

Konfigurasi R3:

interface Loopback0

ip address 3.3.3.3 255.255.255.255

!

interface FastEthernet0/0

ip address 23.23.23.3 255.255.255.0

!

interface Serial0/0

ip address 36.36.36.3 255.255.255.0

!

router bgp 12003

bgp log-neighbor-changes

bgp confederation identifier 12

bgp confederation peers 12002

network 3.3.3.3 mask 255.255.255.255

neighbor 23.23.23.2 remote-as 12002

neighbor 36.36.36.6 remote-as 3

Konfigurasi R6 :

interface Loopback0

ip address 6.6.6.6 255.255.255.255

!

interface Serial0/0

ip address 36.36.36.6 255.255.255.0

!

router bgp 3

network 6.6.6.6 mask 255.255.255.255

neighbor 36.36.36.3 remote-as 12

Cek route table :

R2#sh ip bgp

BGP table version is 6, local router ID is 2.2.2.2

Status codes: s suppressed, d damped, h history, * valid, > best, i – internal,

r RIB-failure, S Stale

Origin codes: i – IGP, e – EGP, ? – incomplete

Network          Next Hop            Metric LocPrf Weight Path

*> 1.1.1.1/32       12.12.12.1               0    100      0 (12001) i

*> 2.2.2.2/32       0.0.0.0                  0         32768 i

*> 3.3.3.3/32       23.23.23.3               0    100      0 (12003) i

*  4.4.4.4/32       14.14.14.4               0    100      0 (12001) i

*>i5.5.5.5/32       25.25.25.5               0    100      0 i

*  6.6.6.6/32       36.36.36.6               0    100      0 (12003) 3 i

Dari show ip bgp dapat dilihat bahwa 6.6.6.6 masih berstatus unreachable dari R2.

Mari tambahkan route ke 36.36.36.6 dari R2:

ip route 36.36.36.0 255.255.255.0 23.23.23.3

Cek route table :

R2#sh ip bgp

BGP table version is 6, local router ID is 2.2.2.2

Status codes: s suppressed, d damped, h history, * valid, > best, i – internal,

r RIB-failure, S Stale

Origin codes: i – IGP, e – EGP, ? – incomplete

Network          Next Hop            Metric LocPrf Weight Path

*> 1.1.1.1/32       12.12.12.1               0    100      0 (12001) i

*> 2.2.2.2/32       0.0.0.0                  0         32768 i

*> 3.3.3.3/32       23.23.23.3               0    100      0 (12003) i

*  4.4.4.4/32       14.14.14.4               0    100      0 (12001) i

*>i5.5.5.5/32       25.25.25.5               0    100      0 i

*> 6.6.6.6/32       36.36.36.6               0    100      0 (12003) 3 i

 

• BGP Atribute (Origin)

Konfigurasinya :

R1 :

interface Loopback0

ip address 1.1.1.1 255.255.255.255

!

interface FastEthernet0/0

ip address 12.12.12.1 255.255.255.0

!

router bgp 100

network 1.1.1.1 mask 255.255.255.255

neighbor 12.12.12.2 remote-as 200

R2 :

interface Loopback0

ip address 2.2.2.2 255.255.255.255

!

interface FastEthernet0/0

ip address 12.12.12.2 255.255.255.0

!

interface Serial0/0

ip address 23.23.23.2 255.255.255.0

!

router bgp 200

network 2.2.2.2 mask 255.255.255.255

redistribute static

neighbor 12.12.12.1 remote-as 100

neighbor 23.23.23.3 remote-as 200

R3 :

interface Loopback0

ip address 3.3.3.3 255.255.255.255

!

interface Loopback1

ip address 33.33.33.33 255.255.255.255

!

interface Loopback2

ip address 30.30.30.30 255.255.255.255

!

interface Serial0/0

ip address 23.23.23.3 255.255.255.0

!

router eigrp 1

network 33.33.33.33 0.0.0.0

!

router bgp 200

network 3.3.3.3 mask 255.255.255.255

redistribute eigrp 1

neighbor 23.23.23.2 remote-as 200

Cek route table :

R1#sh ip bgp

BGP table version is 6, local router ID is 1.1.1.1

Status codes: s suppressed, d damped, h history, * valid, > best, i – internal,

r RIB-failure, S Stale

Origin codes: i – IGP, e – EGP, ? – incomplete

Network          Next Hop            Metric LocPrf Weight Path

*> 1.1.1.1/32       0.0.0.0                  0         32768 i

*> 2.2.2.2/32       12.12.12.2               0             0 200 i

*> 3.3.3.3/32       12.12.12.2                             0 200 i

*> 30.30.30.30/32   12.12.12.2               0             0 200 ?

*> 33.33.33.33/32   12.12.12.2                             0 200 ?

 

• BGP Attribute (Community)

Konfigurasikan access list sehingga ip address 11.11.11.11 di R1 tidak diadvertise di R4.

Konfigurasi R1:

R1(config)#access-list 1 permit host 11.11.11.11

R1(config)#route-map NO-EXPORT

R1(config-route-map)#match ip address 1

R1(config-route-map)#set community no-export

R1(config-route-map)#router bgp 123

R1(config-router)#nei 2.2.2.2 route-map NO-EXPORT out

R1(config-router)#nei 2.2.2.2 send-community

Cek route table :

R4#sh ip bgp

BGP table version is 6, local router ID is 4.4.4.4

Status codes: s suppressed, d damped, h history, * valid, > best, i – internal,

r RIB-failure, S Stale

Origin codes: i – IGP, e – EGP, ? – incomplete

Network          Next Hop            Metric LocPrf Weight Path

*> 4.4.4.4/32       0.0.0.0                  0         32768 i

*> 22.22.22.22/32   24.24.24.2               0             0 123 i

*> 33.33.33.33/32   24.24.24.2                             0 123 i

Selanjutnya skenarionya adalah membuat ip 33.33.33.33 di R3 tidak diadvertise lagi di R1, dan R4.

Konfigurasi di R3 :

R3(config)#access-list 1 permit host 33.33.33.33

R3(config)#route-map NO-ADVERTISE

R3(config-route-map)#match ip address 1

R3(config-route-map)#set community no-advertise

R3(config-route-map)#router bgp 123

R3(config-router)#nei 2.2.2.2 route-map NO-ADVERTISE out

R3(config-router)#nei 2.2.2.2 send-community

Cek route table :

R4#sh ip bgp

BGP table version is 7, local router ID is 4.4.4.4

Status codes: s suppressed, d damped, h history, * valid, > best, i – internal,

r RIB-failure, S Stale

Origin codes: i – IGP, e – EGP, ? – incomplete

Network          Next Hop            Metric LocPrf Weight Path

*> 4.4.4.4/32       0.0.0.0                  0         32768 i

*> 22.22.22.22/32   24.24.24.2               0             0 123 i

Cek route table :

R1#sh ip bgp

BGP table version is 6, local router ID is 11.11.11.11

Status codes: s suppressed, d damped, h history, * valid, > best, i – internal,

r RIB-failure, S Stale

Origin codes: i – IGP, e – EGP, ? – incomplete

Network          Next Hop            Metric LocPrf Weight Path

*>i4.4.4.4/32       2.2.2.2                  0    100      0 4 i

*> 11.11.11.11/32   0.0.0.0                  0         32768 i

*>i22.22.22.22/32   2.2.2.2                  0    100      0 i

Selanjutnya untuk skenario local AS :

Konfigurasi di R1 :

R1#router bgp 12

bgp confederation identifier 123

network 11.11.11.11 mask 255.255.255.255

neighbor 2.2.2.2 remote-as 12

neighbor 2.2.2.2 update-source Loopback0

Konfigurasi di R2 :

R2#router bgp 12

bgp confederation identifier 123

bgp confederation peers 3

network 22.22.22.22 mask 255.255.255.255

neighbor 1.1.1.1 remote-as 12

neighbor 1.1.1.1 update-source Loopback0

neighbor 1.1.1.1 next-hop-self

neighbor 3.3.3.3 remote-as 3

neighbor 3.3.3.3 ebgp-multihop 255

neighbor 3.3.3.3 update-source Loopback0

neighbor 3.3.3.3 next-hop-self

neighbor 24.24.24.4 remote-as 4

Konfigurasi di R3 :

R3#router bgp 3

bgp confederation identifier 123

bgp confederation peers 12

network 33.33.33.33 mask 255.255.255.255

neighbor 2.2.2.2 remote-as 12

neighbor 2.2.2.2 ebgp-multihop 255

neighbor 2.2.2.2 update-source Loopback0

Selanjutnya filter ip address 11.11.11.11 di R1 agar tidak diterima di R3

R1(config)#access-list 1 permit host 11.11.11.11

R1(config)#route-map LOCAL-AS permit 10

R1(config-route-map)#match ip address 1

R1(config-route-map)#set community local-AS

R1(config-route-map)#router bgp 12

R1(config-router)#nei 2.2.2.2 route-map LOCAL-AS out

R1(config-router)#nei 2.2.2.2 send-community

Cek route table :

R3#sh ip bgp

BGP table version is 6, local router ID is 33.33.33.33

Status codes: s suppressed, d damped, h history, * valid, > best, i – internal,

r RIB-failure, S Stale

Origin codes: i – IGP, e – EGP, ? – incomplete

Network          Next Hop            Metric LocPrf Weight Path

*> 4.4.4.4/32       2.2.2.2                  0    100      0 (12) 4 i

*> 22.22.22.22/32   2.2.2.2                  0    100      0 (12) i

*> 33.33.33.33/32   0.0.0.0                  0         32768 i

 

• BGP Peers Group

skenario selanjutnya adalah untuk menghemat jumlah command line yang harus dituliskan ke dalam CLI.

Konfigurasinya :

router bgp 123

nei INTERNAL peer group

nei INTERNAL remote-as 123

nei INTERNAL update-source lo0

nei 2.2.2.2 peer-group INTERNAL

nei 3.3.3.3 peer-group INTERNAL

 

• BGP Aggregator

Skenario selanjutnya adalah untuk melakukan summary address dari beberapa IP yang ada di show ip route .

Konfigurasinya sbb :

router bgp x

aggregate-address x.x.x.x

Bila dibutuhkan hanya beberapa ip address saja yang ingin dihilangkan maka konfigurasinya sbb :

access-list 1 permit host x.x.x.x

route-map BLOK

match ip address 1

router bgp 4

aggregate-address x.x.x.x suppress-map BLOK

 

• BGP Local-AS

Konfigurasinya sbb :

router bgp 3

neighbor x.x.x.x local-as yyy

Jika ingin melakukan no prepend local-as konfigurasinya sbb :

neighbor x.x.x.x local-as yyy no-prepend

Jika ingin no prepend dan replace as konfigurasinya sbb :

neighbor x.x.x.x local-as yyy no-prepend replace-as

MPLS

Multiprotocol Label Switching (disingkat menjadi MPLS) adalah teknologi penyampaian paket pada jaringan backbone berkecepatan tinggi. Asas kerjanya menggabungkan beberapa kelebihan dari sistem komunikasi circuit-switched dan packet-switched yang melahirkan teknologi yang lebih baik dari keduanya. Sebelumnya, paket-paket diteruskan dengan protokol routing seperti OSPF, IS-IS, BGP, atau EGP. Protokol routing berada pada lapisan ketiga network OSI, sedangkan MPLS berada di antara lapisan kedua dan ketiga.

Prinsip kerja MPLS ialah menggabungkan kecepatan switching pada layer 2 dengan kemampuan routing dan skalabilitas pada layer 3. Cara kerjanya adalah dengan menyelipkan label di antara header layer 2 dan layer 3 pada paket yang diteruskan. Label dihasilkan oleh Label-Switching Router dimana bertindak sebagai penghubung jaringan MPLS dengan jaringan luar. Label berisi informasi tujuan node selanjutnya kemana paket harus dikirim. Kemudian paket diteruskan ke node berikutnya, di node ini label paket akan dilepas dan diberi label yang baru yang berisi tujuan berikutnya. Paket-paket diteruskan dalam path yang disebut LSP (Label Switching Path).

Komponen MPLS :

• Label Switched Path (LSP): Merupakan jalur yang melalui satu atau serangkaian LSR dimana paket diteruskan oleh label swapping dari satu MPLS node ke MPLS node yang lain.
• Label Switching Router: MPLS node yang mampu meneruskan paket-paket layer-3
• MPLS Edge Node atau Label Edge Router (LER): MPLS node yang menghubungkan sebuah MPLS domain dengan node yang berada diluar MPLS domain
• MPLS Egress Node: MPLS node yang mengatur trafik saat meninggalkan MPLS domain
• MPLS ingress Node: MPLS node yang mengatur trafik saat akan memasuki MPLS domain
• MPLS label: merupakan label yang ditempatkan sebagai MPLS header
• MPLS node: node yang menjalankan MPLS. MPLS node ini sebagai control protokol yang akan meneruskan paket berdasarkan label.

Berikut konfigurasi lab yang sy praktekkan di gns mengacu kepada buku pegangan dari id-networkers.

 

• MPLS Dasar

 

Konfigurasi PE1 :

interface Loopback0

ip address 10.10.10.1 255.255.255.255

interface FastEthernet0/0

description ### Link to P Router ###

ip address 192.168.10.1 255.255.255.252

Konfigurasi P:

interface Loopback0

ip address 10.10.10.10 255.255.255.255

interface FastEthernet0/0

description ### Link to PE1 Reouter ###

ip address 192.168.10.2 255.255.255.252

interface FastEthernet0/1

description ### Link to PE2 Reouter ###

ip address 192.168.20.1 255.255.255.252

Konfigurasi PE2:

interface Loopback0

ip address 10.10.10.2 255.255.255.255

interface FastEthernet0/0

description ### Link to P Router ###

ip address 192.168.20.2 255.255.255.252

Agar semua router dalam MPLS bida terkoneksi perlu adanya routing dynamic (IGP) kali ini contoh menggunakan OSPF :

PE1#sh run | s ospf

router ospf 1

router-id 10.10.10.1

log-adjacency-changes

network 10.10.10.1 0.0.0.0 area 0

network 192.168.10.1 0.0.0.0 area 0

P#sh run | s ospf

router ospf 1

log-adjacency-changes

network 10.10.10.10 0.0.0.0 area 0

network 192.168.10.2 0.0.0.0 area 0

network 192.168.20.1 0.0.0.0 area 0

PE2#sh run | s ospf

router ospf 1

router-id 10.10.10.2

log-adjacency-changes

network 10.10.10.2 0.0.0.0 area 0

network 192.168.20.2 0.0.0.0 area 0

Untuk melewatkan informasi routing, vpn, vrf memerlukan MP-BGP  di PE 1 dan PE 2 ,

konfigurasinya :

PE1#sh run | s bgp

router bgp 65000

no synchronization

bgp log-neighbor-changes

neighbor 10.10.10.2 remote-as 65000

neighbor 10.10.10.2 update-source Loopback0

no auto-summary

PE2#sh run | s bgp

router bgp 65000

no synchronization

bgp log-neighbor-changes

neighbor 10.10.10.1 remote-as 65000

neighbor 10.10.10.1 update-source Loopback0

no auto-summary

Cek status BGP nya :

PE1#sh ip bgp summary | i 10.10.10.2

10.10.10.2      4 65000      37      37        1    0    0 00:34:49        0

BGP sudah establish selanjutnya aktifkan MPLS nya dengan cara :

PE1(config)#mpls ip

PE1(config)#int fa0/0

PE1(config-if)#mpls ip

PE2(config)#mpls ip

PE2(config)#int fa0/0

PE2(config-if)#mpls ip

P(config)#mpls ip

P(config)#int fa0/0

P(config-if)#mpls ip

P(config-if)#int fa0/1

P(config-if)#mpls ip

Untuk melihat status MPLS aktif bisa menggunakan command :

PE1#sh mpls forwarding-table

Local  Outgoing    Prefix            Bytes tag  Outgoing   Next Hop

tag    tag or VC   or Tunnel Id      switched   interface

16     Pop tag     192.168.20.0/30   0          Fa0/0      192.168.10.2

17     Pop tag     10.10.10.10/32    0          Fa0/0      192.168.10.2

18     16          10.10.10.2/32     0          Fa0/0      192.168.10.2

PE1#sh mpls ldp discovery

Local LDP Identifier:

10.10.10.1:0

Discovery Sources:

Interfaces:

FastEthernet0/0 (ldp): xmit/recv

LDP Id: 10.10.10.10:0

 

• MPLS VPN

 

 

Jadi di lab ini kita akan meletakkan 2 router pelanggan masing-masing (BRI dan BCA) di PE1 dan PE2. Masing-masing router pelanggan ini merupakan customer edge sehingga kita namakan CE.

Konfigur VRF untuk masing-masing pelanggan di PE1 dan PE2 : (disini a adalah BRI dan b adalah BCA)

PE1#sh run | s ip vrf

ip vrf vpn_a

rd 65000:1

route-target export 65000:1

route-target import 65000:1

ip vrf vpn_b

rd 65000:2

route-target export 65000:2

route-target import 65000:2

PE2(config)#  ip vrf vpn_a

PE2(config-vrf)#  rd 65000:1

PE2(config-vrf)#  route-target both 65000:1

PE2(config-vrf)#  exit

PE2(config)#  ip vrf vpn_b

PE2(config-vrf)#  rd 65000:2

PE2(config-vrf)#  route-target export 65000:2

PE2(config-vrf)#  route-target import 65000:2

*) RD <xxxx:xxx> ini berfungsi untuk identitas dari sebuah vrf dan untuk tiap costumer memlilik RD yang berbeda

*) Route-terget digunakan untuk memanipulasi route yang akan di berikan ke routing tabel dalam vrf

Selanjutnya konfigurasikan IP untuk koneksi ke CEA1,CEA2 dan CEB1,CEB22

PE1#sh run int se0/0

interface Serial0/0

description ### to VPN-A ###

ip vrf forwarding vpn_a

ip address 192.168.0.1 255.255.255.252

clock rate 2000000

end

PE1#sh run int se0/1

interface Serial0/1

description ### to VPN-B ###

ip vrf forwarding vpn_b

ip address 192.168.0.1 255.255.255.252

clock rate 2000000

end

PE2#sh run int se0/0

interface Serial0/0

description ### to VPN-A ###

ip vrf forwarding vpn_a

ip address 192.168.0.5 255.255.255.252

clock rate 2000000

end

PE2#sh run int se0/1

interface Serial0/1

description ### to VPN-B ###

ip vrf forwarding vpn_b

ip address 192.168.0.5 255.255.255.252

clock rate 2000000

end

PE1#sh ip vrf

Name                             Default RD          Interfaces

vpn_a                            65000:1             Se0/0

vpn_b                            65000:2             Se0/1

PE2#sh ip vrf

Name                             Default RD          Interfaces

vpn_a                            65000:1             Se0/0

vpn_b                            65000:2             Se0/1

Cek route table :

PE1#sh run | s router bgp

router bgp 65000

!

address-family vpnv4

neighbor 10.10.10.2 activate

neighbor 10.10.10.2 send-community extended

exit-address-family

PE2#sh run | s router bgp

router bgp 65000

!

address-family vpnv4

neighbor 10.10.10.1 activate

neighbor 10.10.10.1 send-community extended

exit-address-family

neighbor 10.10.10.2 send-community extended à default active

 

• MPLS VPN – PE CE Static Routing

Masih dengan topologi di atas dimana yang dikonfigurasi adalah BRI (CEA1 dan CEA2).

Konfigurasi CEA1:

CEA1(config)#ip route 0.0.0.0 0.0.0.0 192.168.0.1

CEA1(config)#do sh run int se0/0

interface Serial0/0

ip address 192.168.0.2 255.255.255.252

clock rate 2000000

end

CEA2#conf t

CEA2(config)#ip route 0.0.0.0 0.0.0.0 192.168.0.5

CEA2#sh run int se0/0

interface Serial0/0

ip address 192.168.0.6 255.255.255.252

clock rate 2000000

end

PE nya :

PE1#conf t

PE1(config)#router bgp 65000

PE1(config-router)#address-family ipv4 vrf vpn_a

PE1(config-router-af)#redistribute static

PE1(config-router-af)#redistribute connected

PE2#conf t

PE2(config)#  router bgp 65000

PE2(config-router)#  address-family ipv4 vrf vpn_a

PE2(config-router-af)#  redistribute static

PE2(config-router-af)#  redistribute connected

Cek ping :

CEA1#ping 192.168.0.5

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 192.168.0.5, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 84/119/148 ms

 

• MPLS VPN – PE CE RIP

Kalau untuk lab ini kita akan konfigurasi sisi BCA nya (CEB1 dan CEB2).

Konfigurasi CE nya :

CEB1#conf t

CEB1(config)#router rip

CEB1(config-router)#version 2

CEB1(config-router)#net 0.0.0.0

CEB1(config-router)#no auto-summary

interface Loopback0

ip address 1.1.1.1 255.255.255.255

CEB2#conf t

CEB2(config)# router rip

CEB2(config-router)#  version 2

CEB2(config-router)#  net 0.0.0.0

CEB2(config-router)#  no auto-summary

interface Loopback0

ip address 1.1.1.2 255.255.255.255

Selanjutnya konfigur redistribute RIP di PE nya :

PE1(config)#router rip

PE1(config-router)#version 2

PE1(config-router)#address-family ipv4 vrf vpn_b

PE1(config-router-af)#network 192.168.0.0

PE1(config-router-af)#no auto-summary

PE1(config-router-af)#redistribute bgp 65000 metric transparent

PE1(config)#router bgp 65000

PE1(config-router)#addre

PE1(config-router)#address-family ipv4 vrf vpn_b

PE1(config-router-af)#redistribute rip

Cek ping :

CEB2#ping 1.1.1.1

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 1.1.1.1, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 104/133/172 ms

CEB2#sh ip rou

CEB2#sh ip route 1.1.1.1

Routing entry for 1.1.1.1/32

Known via “rip”, distance 120, metric 2

Redistributing via rip

Last update from 192.168.0.5 on Serial0/0, 00:00:00 ago

Routing Descriptor Blocks:

* 192.168.0.5, from 192.168.0.5, 00:00:00 ago, via Serial0/0

Route metric is 2, traffic share count is 1

 

• MPLS VPN – PE CE EIGRP Routing
  

Disini kita akan mengkonfigurasi EIGRP sisi BRI (CEA1 dan CEA2).

Konfigur CE nya :

CEA1#conf t

CEA1(config)#int lo0

CEA1(config-if)#ip address 1.1.1.1 255.255.255.255

CEA1(config)#router eigrp 100

CEA1(config-router)#net 0.0.0.0

CEA1(config-router)#no auto-summary

CEB2#conf t

CEB2(config)#  router eigrp 100

CEB2(config-router)#  net 0.0.0.0

CEB2(config-router)#  no auto-summary

CEB2(config)#int lo0

CEB2(config-if)#ip address 2.2.2.2 255.255.255.255

Selanjutnyakonfigur redistribute RIP di PE nya :

PE1#conf t

PE1(config)#router eigrp 65000

PE1(config-router)#address-family ipv4 vrf vpn_a

PE1(config-router-af)#network 192.168.0.0

PE1(config-router-af)#redistribute bgp 65000 metric 1 1 1 1 1

PE1(config-router-af)#autonomous-system 100

PE1(config)#router bgp 65000

PE1(config-router)#address-family ipv4 vrf vpn_a

PE1(config-router-af)#redistribute eigrp 100

PE2#conf t

PE2(config)#  router eigrp 65000

PE2(config-router)#  address-family ipv4 vrf vpn_a

PE2(config-router-af)#  network 192.168.0.0

PE2(config-router-af)#  redistribute bgp 65000 metric 1 1 1 1 1

PE2(config-router-af)#  autonomous-system 100

PE2(config-router)#  router bgp

PE2(config)#  router bgp 65000

PE2(config-router)#  address-family ipv4 vrf vpn_a

PE2(config-router-af)#  redistribute eigrp 100

cek route table :

CEA2#sh ip route eigrp

1.0.0.0/32 is subnetted, 1 subnets

D       1.1.1.1 [90/2809856] via 192.168.0.5, 00:00:10, Serial0/0

192.168.0.0/30 is subnetted, 2 subnets

D       192.168.0.0 [90/2681856] via 192.168.0.5, 00:00:10, Serial0/0

CEA2#ping 1.1.1.1

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 1.1.1.1, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 92/121/152 ms

 

• MPLS VPN – PE CE BGP Routing
  

Kalau lab ini kita akan mengkonfigurasi BGP routing di sisi BCA (CEB1 dan CEB2).

Konfigur CE nya :

CEB1(config)#int lo0

CEB1(config-if)#ip address 11.11.11.11 255.255.255.255

CEB1(config)#router bgp 111

CEB1(config-router)#neighbor 192.168.0.1 remote-as 65000

CEB1(config-router)#net 11.11.11.11 mask 255.255.255.255

CEB2(config)#int lo0

CEB2(config-if)#ip address 22.22.22.22 255.255.255.255

CEB2(config)#router bgp 111

CEB2(config-router)#neighbor 192.168.0.5 remote-as 65000

CEB2(config-router)#net 22.22.22.22 mask 255.255.255.255

Konfig PE nya :

PE1#conf t

PE1(config)#router bgp 65000

PE1(config-router)#address-family ipv4 vrf vpn_b

PE1(config-router-af)#neighbor 192.168.0.2 remote-as 111

PE1(config-router-af)#neighbor 192.168.0.2 activate

PE1(config-router-af)#neighbor 192.168.0.2 as-override

PE2(config)#router bgp 65000

PE2(config-router)#address-family ipv4 vrf vpn_b

PE2(config-router-af)#neighbor 192.168.0.6 remote-as 111

PE2(config-router-af)#neighbor 192.168.0.6 activate

PE2(config-router-af)#neighbor 192.168.0.6 as-override

Cek ping :

CEB1#ping 22.22.22.22

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 22.22.22.22, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 92/116/156 ms

CEB1#sh ip bg

CEB1#sh ip bgp

BGP table version is 11, local router ID is 11.11.11.11

Status codes: s suppressed, d damped, h history, * valid, > best, i – internal,

r RIB-failure, S Stale

Origin codes: i – IGP, e – EGP, ? – incomplete

Network          Next Hop            Metric LocPrf Weight Path

*> 11.11.11.11/32   0.0.0.0                  0         32768 i

*> 22.22.22.22/32   192.168.0.1                            0 65000 65000 i

r> 192.168.0.0/30   192.168.0.1              0             0 65000 ?

*> 192.168.0.4/30   192.168.0.1                            0 65000 ?

 

• MPLS VPN – PE CE OSPF Routing
  

Disini kita akan konfigurasi OSPF routing di sisi BRI (CEA1 dan CEA2).

Konfigurasi di CE :

CEA1#sh run | s ospf

router ospf 1

log-adjacency-changes

network 0.0.0.0 255.255.255.255 area 0

CEA2#sh run | s ospf

router ospf 1

log-adjacency-changes

network 0.0.0.0 255.255.255.255 area 0

Konfigurasi di PE:

PE1#sh run | s router ospf

router ospf 100 vrf vpn_a

log-adjacency-changes

redistribute bgp 65000 subnets

network 192.168.0.1 0.0.0.0 area 0

PE2#sh run | s router ospf

router ospf 100 vrf vpn_a

log-adjacency-changes

redistribute bgp 65000 subnets

network 192.168.0.5 0.0.0.0 area 0

Cek route table :

CEA1#sh ip route ospf

192.168.0.0/30 is subnetted, 2 subnets

O IA    192.168.0.4 [110/11] via 192.168.0.1, 00:02:43, FastEthernet0/0

CEA1#ping 192.168.0.6

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 192.168.0.6, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 124/148/188 ms

 

• MPLS VPN – PE CE OSPF -Shamlink

 

 

Tambahkan IP B2B antara CEA1 – CEA2 :

CEA2#conf t

Enter configuration commands, one per line.  End with CNTL/Z.

CEA2(config)#int se0/1

CEA2(config-if)#ip add

CEA2(config-if)#ip address 12.12.12.2 255.255.255.0

CEA2(config-if)#no shut

CEA1#conf t

Enter configuration commands, one per line.  End with CNTL/Z.

CEA1(config)#int se0/1

CEA1(config-if)#ip add

CEA1(config-if)#ip address 12.12.12.1 255.255.255.0

CEA1(config-if)#no shut

Setelah link baru hidup trafic lebih prefer melalui lionk tersebut :

CEA1#sh ip route 192.168.0.5

Routing entry for 192.168.0.4/30

Known via “ospf 1”, distance 110, metric 74, type intra area

Last update from 12.12.12.2 on Serial0/1, 00:02:25 ago

Routing Descriptor Blocks:

* 12.12.12.2, from 192.168.0.6, 00:02:25 ago, via Serial0/1

Route metric is 74, traffic share count is 1

Untuk memanipulasinya di sisi provider ditambahkan OSPF Shamlink dengan konfigurasi :

PE1#sh run int lo200

interface Loopback200

ip vrf forwarding vpn_a

ip address 100.100.100.1 255.255.255.255

end

tambahkan router-id dan area shamlink :

router ospf 100 vrf vpn_a

 router-id 100.100.100.1

log-adjacency-changes

area 0 sham-link 100.100.100.1 100.100.100.2

redistribute bgp 65000 subnets

network 192.168.0.1 0.0.0.0 area 0

Redistribute network 100.100.100.x ke bgp :

address-family ipv4 vrf vpn_a

redistribute connected

redistribute ospf 100 vrf vpn_a match internal external 1 external 2

no synchronization

network 100.100.100.1 mask 255.255.255.255

Buat int Loopback :

PE2#sh run int lo200

interface Loopback200

ip vrf forwarding vpn_a

ip address 100.100.100.2 255.255.255.255

end

tambahkan router-id dan area shamlink :

router ospf 100 vrf vpn_a

router-id 100.100.100.22

log-adjacency-changes

area 0 sham-link 100.100.100.2 100.100.100.1

redistribute bgp 65000 subnets

network 192.168.0.5 0.0.0.0 area 0

Redistribute network 100.100.100.x ke bgp :

address-family ipv4 vrf vpn_a

redistribute connected

redistribute ospf 100 vrf vpn_a match internal external 1 external 2

no synchronization

network 100.100.100.12mask 255.255.255.255

Cek route table :

CEA1#sh ip route 192.168.0.6

Routing entry for 192.168.0.4/30

Known via “ospf 1”, distance 110, metric 21, type intra area

Last update from 192.168.0.1 on FastEthernet0/0, 00:05:41 ago

Routing Descriptor Blocks:

* 192.168.0.1, from 192.168.0.6, 00:05:41 ago, via FastEthernet0/0

Route metric is 21, traffic share count is 1

 

• MPLS VPN – AtoM – Frame Relay

 

 

konfigurasinya :

PE1(config)#mpls ldp router-id loopback 0 force

PE1(config)#mpls ldp router-id loopback 0 force

Aktifkan Interface dengan encapsulation Frame relay

PE1(config)#int se2/0

PE1(config-if)#encapsulation frame-relay

PE1(config-if)#frame-relay intf-type dce

PE2(config)#int se2/0

PE2(config-if)#encapsulation frame-relay

PE2(config-if)#frame-relay intf-type dce

Konfigur Frame Relay Swicthing dan buat virtual connection untuk Frame Relay melalui MPLS:

PE2(config)#frame-relay switching

PE2(config)#connect AToMFR serial2/0 201 l2transport

PE2(config-fr-pw-switching)#xconnect 10.10.10.2 1 enca

PE2(config-fr-pw-switching)#xconnect 10.10.10.2 1 encapsulation mpls

PE2(config-fr-pw-switching)#exit

PE1(config)#frame-relay switching

PE1(config)#connect AToMFR serial2/0 102 l2transport

PE1(config-fr-pw-switching)#xconnect 10.10.10.2 1 enca

PE1(config-fr-pw-switching)#xconnect 10.10.10.2 1 encapsulation mpls

PE1(config-fr-pw-switching)#exit

Konfigur Frame Relay Pada Router CE :

CE1:

interface Serial0/0

no ip address

encapsulation frame-relay

clock rate 2000000

!

interface Serial0/0.1 point-to-point

ip address 12.12.12.1 255.255.255.0

frame-relay interface-dlci 102

CE2:

interface Serial0/0

no ip address

encapsulation frame-relay

clock rate 2000000

!

interface Serial0/0.1 point-to-point

ip address 12.12.12.2 255.255.255.0

frame-relay interface-dlci 201

Cek route table :

PE1# sh mpls l2transport vc 1

Local intf     Local circuit        Dest address    VC ID      Status

————-  ——————– ————— ———- ———-

Se2/0          FR DLCI 102          10.10.10.2      1          UP

Cek ping :

CE1#ping 12.12.12.2

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 12.12.12.2, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 72/100/124 ms