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Forum Replies

  1. Thanks for great lesson.
    I’m quite new to Vpn l3. Could you explain about label stack of vpn packet when it travels from CE1 to PE1, then through isp , then out on PE2, then to CE2. Tks !!

  2. Hi Zeeshan,

    In an MPLS PE-CE scenario, you can use IGPs or BGP. Even static routes are possible.

    Rene

  3. Hi Rene.
    Will you please advise me how do I advertise loopback I/F of PE1 to CE1?
    I have added

    PE1(config)#router rip
    PE1(config-router)#address-family ipv4 vrf CUSTOMER
    PE1(config-router-af)#version 2
    PE1(config-router-af)#no auto-summary 
    PE1(config-router-af)#network 192.168.12.0
    **PE1(config-router-af)#network 2.2.2.2**
    and even
    **PE1(config-router-af)#redistribute connnected**
    

    It seems the PE1 are not advertise its loopback to CE1.
    Thanks.

  4. Hello Shang

    This behaviour is normal. Not only that, it is actually desired. The whole purpose of the MPLS Layer 3 VPN is to be able to create a transparent MPLS VPN between the two CE routers as if they are directly connected to each other. You’ve configured the Loopback to participate in the RIP routing, but you’ve also configured the ip vrf forwarding CUSTOMER VRF on the customer facing Fa0/0 interface and the mpls ldp autoconfig on the network facing interface. This will cause all additional network interfaces to be “inside the VPN” and not visible to t

    ... Continue reading in our forum

  5. Hello lagapides
    Thank you for your kindly explaination.
    I also find some hint in the next few lessons.
    S

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