From The sin within

Contents 1 Goal 2 How To 2.1 BGP session on Cisco side 2.2 BGP session on Juniper side 3 Acknowledgements

Goal

To establish a bgp session between a Cisco router and a Juniper one.

How To

BGP session on Cisco side

!
router bgp 65002
 bgp log-neighbor-changes
 neighbor 10.0.0.1 remote-as 65001
 !
 address-family ipv4
  redistribute connected
  redistribute static
  neighbor 10.0.0.1 activate
  no auto-summary
  no synchronization
  bgp scan-time 10
 exit-address-family
!

BGP session on Juniper side

protocols {
    bgp {
        peer-as 65001;
        group borders {
            neighbor 10.0.0.2 {
                peer-as 65002;
            }
          }
    }
}

Acknowledgements

This was done using:

• JunOS 8.1R1.5
• IOS 12.4(16)

many thanks to adonay for a few hints :)