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  1. Hi Rene,
    Is there any rule to connected other Routing protocol or we can do redistribution any where suppose L1/L2 or L1-L2 Router?? Thanks

    br//zaman

  2. Hi Zaman,

    Not really, when you redistribute something into IS-IS you can do it on any router and redistribute into L1, L2 or both L1 and L2.

    Rene

  3. Hi Rene,
    I have set up a LAB with multiple ISIS Instance/TAG . Then Redistribute those Instances with each other using Route-Map matching Loopback IP’s and TAG value. But I am not getting 2.2.2.2/32 prefix from R1 and 4.4.4.4/32, 44.44.44.44/32 prefix from R3 whether I configured Instance Redistribution on R2 and R4 .Please check the topology & Configuration attached.ISIS config !!.txt (3.5 KB)

    //cdn-forum.networklessons.com/uploads/default/original/2X/7/75345041b54bd8a1005cea61f7dab1089cbe8905.jpeg

    Thanks

    BR//ZAMAN

  4. Hello Zaman,

    If you lab up something like this, first try the basic redistribution commands without route-maps or tags (maybe you did).

    I labbed up redistribution between IS-IS processes on IOSv (Cisco VIRL) but whatever I tried, it was impossible to redistribute routes from one process into another. Maybe it’s related to Cisco IOS or the version that I used. The commands are accepted but it doesn’t redistribute anything.

    On IOS XR, it works. Here’s a working configuration for three routers connected like this:

    R1-R2-R3

    hostname R1
    !
    interface GigabitEthernet0/
    ... Continue reading in our forum

  5. Hi,
    Thanks Rene for your valuable input . In My LAB Only local connected (Loopback) prefix will not distributed But others prefix distributed fine . In R2 , when redistributed (24 to AREA12) to AREA12 , only 2.2.2.2/32 prefix not come to AREA12 but all others prefix (3.3.3.3/32 ; 4.4.4.4/32) redistributed fine . See the output below :

    R1#show ip route 
    Gateway of last resort is not set
    
     1.0.0.0/32 is subnetted, 1 subnets
    C        1.1.1.1 is directly connected, Loopback0
          3.0.0.0/32 is subnetted, 1 subnets
    **i L2     3.3.3.3 [115/30] via 192.168.12.2, 00:0
    ... Continue reading in our forum

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