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​BGP - eBGP IPv4 Unicast Peering

Picture
This lab example setups up eBGP IPv4 unicast peerings between AS 100 and AS 15.




CSR15
router bgp 15
 bgp log-neighbor-changes
 neighbor 100.9.15.9 remote-as 100
 neighbor 100.13.15.13 remote-as 100



IOS9
router bgp 100
 bgp log-neighbor-changes
 neighbor 100.9.15.15 remote-as 15

%BGP-5-ADJCHANGE: neighbor 100.9.15.15 U



XR13
route-policy PASS
  pass
end-policy
!
router bgp 100
 address-family ipv4 unicast
 !
 neighbor 100.13.15.15
  remote-as 15
  address-family ipv4 unicast
   route-policy PASS in
   route-policy PASS out
  






%ROUTING-BGP-5-ASYNC_IPC_STATUS : bpm-active:(bgp-bpm-active)inst-id 0, Service Published 
%MGBL-CONFIG-6-DB_COMMIT : Configuration committed by user 'Rob'. Use 'show configuration commit changes 1000000006' to view the changes. 
%ROUTING-BGP-5-ASYNC_IPC_STATUS : bpm-default:(A)inst-id 0, Connection Open 
%ROUTING-BGP-5-ASYNC_IPC_STATUS : default, process instance 1:(A)inst-id 0, Connection Establised 
%ROUTING-BGP-5-ASYNC_IPC_STATUS : default:(A)inst-id 0, Initial Config Done 
%ROUTING-BGP-5-ADJCHANGE : neighbor 100.13.15.15 Up (VRF: default) (AS: 15) 
%ROUTING-BGP-5-NSR_STATE_CHANGE : Changed state to Not NSR-Ready



RP/0/0/CPU0:XR13#show bgp ipv4 unicast summary 
Thu Jan  2 01:08:50.214 UTC
BGP router identifier 100.13.13.13, local AS number 100
BGP generic scan interval 60 secs
Non-stop routing is enabled
BGP table state: Active
Table ID: 0xe0000000   RD version: 2
BGP main routing table version 2
BGP NSR Initial initsync version 2 (Reached)
BGP NSR/ISSU Sync-Group versions 0/0
BGP scan interval 60 secs

BGP is operating in STANDALONE mode.


Process       RcvTblVer   bRIB/RIB   LabelVer  ImportVer  SendTblVer  StandbyVer
Speaker               2          2          2          2           2           0

Neighbor        Spk    AS MsgRcvd MsgSent   TblVer  InQ OutQ  Up/Down  St/PfxRcd
100.13.15.15      0    15      10       9        2    0    0 00:07:49          0
100.14.14.14      0   100       4       5        2    0    0 00:02:07          0



​CSR15#show bgp ipv4  unicast summary 
BGP router identifier 100.15.15.15, local AS number 15
BGP table version is 1, main routing table version 1

Neighbor        V           AS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down  State/PfxRcd
100.9.15.9      4          100      22      23        1    0    0 00:17:01        0
100.13.15.13    4          100      10      11        1    0    0 00:08:15        0
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  • Home
  • Technology VoD!
    • Cisco >
      • Route & Switch / Enterprise Infrastructure
  • Technology Breakdowns!
    • Route&Switch/Ent. Infra. >
      • L2 Technologies
      • L3 Technologies
      • VPN Technologies
      • Services >
        • IOS - Dynamic NAT
        • HSRP - IPv4 Setup
        • HSRP - Priority and Preemption
    • Service Provider >
      • IGPs (Interior Gateway Protocols)
      • First Hop Redundancy >
        • HSRP (Hot Standby Router Protocol) >
          • HSRP - IOS/IOS XE Setup
          • HSRP - IOS XR Setup
      • BGP (Border Gateway Protocol)
      • Inter AS Multicast (MSDP)
      • Intra-AS MPLS
      • Inter-AS MPLS
    • Security >
      • IOS Firewall
      • ASA Firewall
      • FirePOWER Threat Defense >
        • FTD - FTD NGFW Device Setup and FMC Integration
      • VPNs >
        • PKI
        • Site to Site VPNs
        • Remote Access VPNs >
          • IOS Remote Access
          • ASA Remote Access
    • Data Center >
      • Nexus 9000v >
        • Nexus 9000v - Enabling Features
        • Nexus 9000v - VLANs and Trunks
        • Nexus 9000v - LACP Port Channels
        • Nexus 9000v - vPC (Virtual Port Channel)
        • Nexus 9000v - OSPFv2
        • Nexus 9000v - VXLAN - Ingress Replication Flood and Learn
        • Nexus 9000v - IP Multicast
        • Nexus 9000v - VxLAN - Multicast Flood and Learn
        • Nexus 9000v - VxLAN - BGP EVPN with Multicast
        • Nexus 9000v - VxLAN - BGP EVPN w/Ingress Replication
        • Nexus 9000v - VxLAN - Inter-VxLAN Routing with BGP EVPN
        • Nexus 9000v - VXLAN - External Routing
      • Nexus 7000v
    • Palo Alto