How to filter Ipv6 RP to specific group ?

If want to filter Ipv6 static RP only for specific group, what is the right acl format ?

 

ipv6 pim rp-address <>  <ipv6 group acl>

ipv6 access-list <acl>

   permit ipv6 any host <FF08::xxxx:yyyy>    

 

%Error: Group prefix must be less than 128, skipping 
 <FF08::xxxx:yyyy> /128

 

Comments

  • ipv6 pim rp-address <>  <ipv6 group acl>

    ipv6 access-list <acl>

       permit ipv6 any host <FF08::xxxx:yyyy>    

     

    %Error: Group prefix must be less than 128, skipping 
     <FF08::xxxx:yyyy> /128

    Thats true it does not work with /128. Try to filter out register messages at RP for all all groups but this group. 

  • %Error: Group prefix must be less than 128, skipping 
     <FF08::xxxx:yyyy> /128

    I also noticed this error first time but if you re-enter ipv6 pim rp-address command, it doesn't return the error:

    See here:

    R1(config)#ipv6 access-list RP1

    R1(config-ipv6-acl)#permit ipv6 any host FF08:00001::01

    R1(config)#ipv6 pim rp-address 2000::1 RP1
    %Error: Group prefix must be less than 128, skipping FF08:1::1/128
    R1(config)#
    R1(config)#ipv6 pim rp-address 2000::1 RP1 -->No error on second time.

    R1(config)#do show run | in ipv6
    ipv6 multicast-routing
    ipv6 pim rp-address 2000::1 RP1
    ipv6 access-list RP1
     permit ipv6 any host FF08:1::1

    Good Luck

  • I had the same issue. Now I will have to give that try I hope it will help to fix my error.

  • I had the same issue Now I will have to give that try I hope it will help to fix my error.

    I will not help you. Its just does not show error message second time but will not resolve the issue.

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