Anthony Fajri

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BGP Peer Method

  • Full Mesh

  • Single route reflector

  • Clustered route reflectors

  • Redundant route reflectors

  • Confederation

  • Hybrid architectures (route reflector cluster and confederation)

    • March 8th, 2010 Posted by Anthony Fajri| ccie | no comments

    Unicast Reverse Path Forwarding

    uRPF is used to verify the reachability of the source address in packets being forwarded. If the source IP is not valid, the the packet will be discarded.

    uRPF can work in 3 modes:

  • strict mode

    • in this mode, the packet must be received on the interface that the router would use to forward the return packet.
    this mode can be configured as following:

    interface FastEthernet 0/0
    ip verify unicast source reachable-via rx

  • loose mode

    • in this mode, the source address must appear in the routing table
    this mode can be configured as following:

    interface FastEthernet 0/0
    ip verify unicast source reachable-via any

  • vrf mode


    • Reference: Cisco

    March 8th, 2010 Posted by Anthony Fajri| ccie | no comments

    LDP Message

    Discovery Message:
    hello packet is sent to UDP port 646 to all-router multicast group (224.0.0.2)

    Session Message:
    It’s used to maintained, established, and terminated the session.
    It’s using TCP port 646. Normally, it’s sent from loopback interface to loopback interface of peer.

    Advertisement Message:
    it’s used to create, change, and delete the table mapping for FEC (forwarding equivalent classes).

    Notification Message:
    it provide advisory information and signal error information

    March 8th, 2010 Posted by Anthony Fajri| ccie | no comments

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