BGP_No_Synchronization_v1.zip

Visibility: Open to anyone

    Here is another GNS3 lab covering the BGP with no synchronization.  Configuration of R3, R4 and R5 inside AS 65100.  Full iBGP mesh with no IGP needed.  BGP synchronization is disabled on all routers.  The iBGP peers inside AS 65100 use "next-hop-self" and two static routes (one on R3 and one on R5).

     

    Note:  The links between routers are NOT being advertised via BGP.  So you can only ping directly connected peers.  To verify other routes you must use the "ping x.x.x.x source y.y.y.y" command.

     

     

    Below are the modified configurations for the "no-synchronization" option.

     

    ==================================================

    ====================> On R3 < ====================

     

    R3_AS65100#sh run

    Building configuration...

     

    Current configuration : 1851 bytes

    !

    router bgp 65100

    bgp router-id 3.3.3.3

    bgp log-neighbor-changes

    neighbor 10.10.34.4 remote-as 65100

    neighbor 10.10.45.5 remote-as 65100

    neighbor 192.168.13.1 remote-as 65200

    neighbor 192.168.23.2 remote-as 65300

    !

    address-family ipv4

    neighbor 10.10.34.4 activate

    neighbor 10.10.34.4 next-hop-self

    neighbor 10.10.34.4 soft-reconfiguration inbound

    neighbor 10.10.45.5 activate

    neighbor 10.10.45.5 next-hop-self

    neighbor 10.10.45.5 soft-reconfiguration inbound

    neighbor 192.168.13.1 activate

    neighbor 192.168.23.2 activate

    no auto-summary

    no synchronization

    network 10.0.0.0

    network 10.30.0.0 mask 255.255.0.0

    network 10.31.0.0 mask 255.255.0.0

    exit-address-family

    !

    ip route 10.0.0.0 255.0.0.0 Null0

    ip route 10.10.45.0 255.255.255.0 10.10.34.4

    !

    end

     

    R3_AS65100#

     

    ==================================================

    ====================> On R4 < ====================

     

    R4_AS65100#sh run

    Building configuration...

     

    Current configuration : 1443 bytes

    !

    router bgp 65100

    bgp router-id 4.4.4.4

    bgp log-neighbor-changes

    neighbor 10.10.34.3 remote-as 65100

    neighbor 10.10.45.5 remote-as 65100

    !

    address-family ipv4

    neighbor 10.10.34.3 activate

    neighbor 10.10.34.3 soft-reconfiguration inbound

    neighbor 10.10.45.5 activate

    neighbor 10.10.45.5 soft-reconfiguration inbound

    no auto-summary

    no synchronization

    network 10.40.0.0 mask 255.255.0.0

    network 10.41.0.0 mask 255.255.0.0

    exit-address-family

    !

    end

     

    R4_AS65100#

     

    ==================================================

    ====================> On R5 < ====================

     

    R5_AS65100#sh run

    Building configuration...

     

    Current configuration : 1649 bytes

    !

    router bgp 65100

    bgp router-id 5.5.5.5

    bgp log-neighbor-changes

    neighbor 10.10.34.3 remote-as 65100

    neighbor 10.10.45.4 remote-as 65100

    neighbor 192.168.56.6 remote-as 65400

    !

    address-family ipv4

    neighbor 10.10.34.3 activate

    neighbor 10.10.34.3 next-hop-self

    neighbor 10.10.34.3 soft-reconfiguration inbound

    neighbor 10.10.45.4 activate

    neighbor 10.10.45.4 next-hop-self

    neighbor 10.10.45.4 soft-reconfiguration inbound

    neighbor 192.168.56.6 activate

    no auto-summary

    no synchronization

    network 10.0.0.0

    network 10.50.0.0 mask 255.255.0.0

    network 10.51.0.0 mask 255.255.0.0

    exit-address-family

    !

    ip route 10.10.34.0 255.255.255.0 10.10.45.4

    !

    end

     

    R5_AS65100#

     

    ==================================================

     

    I hope you enjoy the new lab.  Please let know if you have any questions.  Feedback welcome.

     

    Brian