====IOS-XR Lab 6: iBGP with Three Routers part 2====

This lab will configure all three routers to form iBGP relationships with each other.
  - Add a neighbor statement to R3 from R1 and vice-versa.
    - ++Answer R1|<code>router bgp 65000
 neighbor 10.0.1.3
  remote-as 65000
  address-family ipv4 unicast</code> ++
    - ++Answer R3|<code>router bgp 65000
 neighbor 10.0.0.2
  remote-as 65000
  address-family ipv4 unicast</code> ++
  - Verification
    - <code>RP/0/0/CPU0:R3#show bgp summ
Neighbor        Spk    AS MsgRcvd MsgSent   TblVer  InQ OutQ  Up/Down  St/PfxRcd
10.0.0.2          0 65000     107     107     4080    0    0 01:43:16          2
10.0.1.2          0 65000    1127    1127     4080    0    0 18:43:48          3</code>
    - <code>RP/0/0/CPU0:R3#show bgp nei 10.0.0.2 | i BGP state
BGP state = Established, up for 01:44:11</code>
    - <code>RP/0/RP0/CPU0:R1#show route bgp
Tue Feb  4 13:54:01.083 UTC

B    2.2.2.2/32 [200/0] via 10.0.0.3, 00:04:04
B    3.3.3.3/32 [200/0] via 10.0.1.3, 00:01:00
B    10.0.1.0/24 [200/0] via 10.0.0.3, 00:04:04</code>
    - <code>RP/0/RP0/CPU0:R2#show route bgp
Tue Feb  4 13:55:08.321 UTC

B    1.1.1.1/32 [200/0] via 10.0.0.2, 00:05:11
B    3.3.3.3/32 [200/0] via 10.0.1.3, 00:05:11</code>
    - <code>RP/0/RP0/CPU0:R3#show bgp nei 10.0.0.2 | i BGP state
Tue Feb  4 13:53:30.051 UTC
  BGP state = Established, up for 00:00:35
RP/0/RP0/CPU0:R3#show route bgp
Tue Feb  4 13:53:37.832 UTC

B    1.1.1.1/32 [200/0] via 10.0.0.2, 00:00:01
B    2.2.2.2/32 [200/0] via 10.0.1.2, 00:03:42
B    10.0.0.0/24 [200/0] via 10.0.0.2, 00:00:01</code>
    - Now R1 and R3 have an iBGP relationship. All this was done without creating a directly connected full-mesh topology.
    - <code>RP/0/RP0/CPU0:R3#ping 10.0.0.1
Tue Feb  4 14:02:42.197 UTC
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.0.0.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 143/163/181 ms
RP/0/RP0/CPU0:R3#ping 10.0.0.2
Tue Feb  4 14:02:47.192 UTC
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.0.0.2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 158/185/204 ms
RP/0/RP0/CPU0:R3#ping 10.0.0.3
Tue Feb  4 14:03:00.589 UTC
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.0.0.3, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 89/114/166 ms</code>

[[:cisco:labs:ios_xr:lab7|IOS-XR Lab 7: iBGP with Three Routers part 3]]\\ 
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