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Exercise 4

BGP Over SVR

Step 1

Configure Routing Interface ( loopback if )

bosdc1

Router: > Routing Instance

ADD Routing Interfaces

name rtg-int-bos

IP address: 6.6.6.6

show config running authority router bosdc1 routing default-instance interface rtg-int-bos

Code Block

title	routing interface
collapse	true

admin@node1.bosdc1# show config running authority router bosdc1 routing default-instance interface rtg-int-bos 

config

    authority

        router  bosdc1
            name     bosdc1

            routing  default-instance
                type       default-instance

                interface  rtg-int-bos
                    name        rtg-int-bos
                    ip-address  6.6.6.6
                exit
            exit
        exit
    exit
exit

show rib

Code Block

title	show rib
collapse	true

admin@node1.bosdc1# show rib 
Fri 2021-05-07 07:25:12 UTC
Codes: K - kernel route, C - connected, S - static, R - RIP,
       O - OSPF, I - IS-IS, B - BGP, E - EIGRP, N - NHRP,
       T - Table, v - VNC, V - VNC-Direct, A - Babel, D - SHARP,
       F - PBR,
       > - selected route, * - FIB route
. . . 
C>* 6.6.6.6/32 is directly connected, rtg-int-bos, 00:09:29

seabo1

name rtg-int-sea

IP address: 7.7.7.7

dalbo2

name rtg-int-dal

IP address: 8.8.8.8

Step 2

Change Router ID to Routing Interface ( BGP will use loopback address)

for all the site:

bosdc1

seabo1

dalbo2

Router: > Routing Instance > BGP

Code Block

title	bgp config
collapse	true

admin@node1.bosdc1# show config running authority router bosdc1 routing default-instance routing-protocol bgp 

config

    authority

        router  bosdc1
            name     bosdc1

            routing  default-instance
                type              default-instance

                routing-protocol  bgp
                    type            bgp
                    local-as        300
                    router-id       6.6.6.6  <<<<<<<<<<<< new loopback if / routing interface

                    address-family  ipv4-unicast
                        afi-safi  ipv4-unicast

                        network   172.26.128.0/30
                            network-address  172.26.128.0/30
                            policy           add-community
                        exit
                    exit

                    neighbor        3.3.3.1
                        neighbor-address  3.3.3.1
                        neighbor-as       6000

                        neighbor-policy
                            inbound-policy  add-as-path
                        exit

                        address-family    ipv4-unicast
                            afi-safi  ipv4-unicast
                        exit
                    exit

                    redistribute    service
                        protocol  service
                    exit
                exit
            exit
        exit
    exit
exit

admin@node1.bosdc1#

Step 3

Add BGP Over SVR Peers ( Add Neighbors in DC )

bosdc1

Router: > Routing Instance: > BGP

AD: neighbors

Seattle:

BGP Neighbor Address: 7.7.7.7
Neighbor AS Number: 100

Local Address: Routing + Routing Interface: rtg-int-bos

Time-to-live Value: 5 ( for BGP Multihop Settings )

Address Families. Select bgp:ipv4-unicast. ( + Router As Next Hop: True )

Dallas:

BGP Neighbor Address: 8.8.8.8
b. Neighbor AS Number: 200