====IOS-XR Lab 3: iBGP Configuration====
This lab will cover iBGP configuration. If you are unfamiliar with BGP, please check out this link for a brief description.
  - Configure iBGP between R1 and R2 using the following parameters:
    - R1 Loopback 0=1.1.1.1/32
      - ++Answer|<code>RP/0/0/CPU0:R1(config)#int lo0
RP/0/0/CPU0:R1(config-if)#ip add 1.1.1.1 255.255.255.255
RP/0/0/CPU0:R1(config-if)#commit </code> ++
    - R2 Loopback 0=2.2.2.2/32
      - ++Answer|<code>RP/0/0/CPU0:R2(config)#int lo0
RP/0/0/CPU0:R1(config-if)#ip add 2.2.2.2/32
RP/0/0/CPU0:R1(config-if)#commit </code> ++
    - ASN: 65000
      - ++Answer|<code>RP/0/0/CPU0:R1(config)#router bgp 65000
RP/0/0/CPU0:R1(config-bgp)#bgp router-id 1.1.1.1
RP/0/0/CPU0:R1(config-bgp)#address-family ipv4 unicast
RP/0/0/CPU0:R1(config-bgp-af)#exit
RP/0/0/CPU0:R1(config-bgp)#neighbor 10.0.0.3         
RP/0/0/CPU0:R1(config-bgp-nbr)#remote-as 65000
RP/0/0/CPU0:R1(config-bgp-nbr)#address-family ipv4 unicast
RP/0/0/CPU0:R1(config-bgp-nbr-af)#commit </code> 
<code> RP/0/0/CPU0:R2(config)#router bgp 65000
RP/0/0/CPU0:R2(config-bgp)#bgp router-id 2.2.2.2 
RP/0/0/CPU0:R2(config-bgp)#address-family ipv4 unicast
RP/0/0/CPU0:R1(config-bgp-af)#exit
RP/0/0/CPU0:R2(config-bgp)#neighbor 10.0.0.2
RP/0/0/CPU0:R2(config-bgp-nbr)#remote-as 65000
RP/0/0/CPU0:R2(config-bgp-nbr)#address-family ipv4 unicast 
RP/0/0/CPU0:R2(config-bgp-nbr-af)#commit </code> ++
  - Verify:
    - <code>RP/0/0/CPU0:R1#show bgp summ
BGP router identifier 1.1.1.1, local AS number 65000
Neighbor        Spk    AS MsgRcvd MsgSent   TblVer  InQ OutQ  Up/Down  St/PfxRcd
10.0.0.3          0 65000       8       8        2    0    0 00:05:12          0</code>
    - <code>RP/0/RP0/CPU0:R2#show bgp nei nsr
Tue Feb  4 12:46:08.984 UTC

BGP neighbor is 10.0.0.2
  BGP state = Established, up for 00:00:50</code>
    - <code>RP/0/0/CPU0:R1#show bgp ipv4 unicast summary
BGP router identifier 1.1.1.1, local AS number 65000
Neighbor        Spk    AS MsgRcvd MsgSent   TblVer  InQ OutQ  Up/Down  St/PfxRcd
10.0.0.3          0 65000      12      12        2    0    0 00:09:47          0</code>

[[:cisco:labs:ios_xr:lab4|IOS-XR Lab 4: Advertising iBGP]]\\ 
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