[c-nsp] Why doesn't this IPv6 ACL work?

Phil Mayers p.mayers at imperial.ac.uk
Tue Jun 22 04:16:51 EDT 2010


On 06/22/2010 08:28 AM, Alexander Clouter wrote:

> Just to really be a pain, it all seems fine on our 3750 stack:
> ----
> 103-1#show sdm prefer | include --useful-stuff
>   The current template is "desktop IPv4 and IPv6 routing" template.
>
> 103-1#show ver | include --useful-stuff
> Switch Ports Model              SW Version            SW Image
> ------ ----- -----              ----------            ----------
> *    1 52    WS-C3750-48TS      12.2(53)SE1           C3750-IPSERVICESK9-M
>       2 52    WS-C3750-48TS      12.2(53)SE1           C3750-IPSERVICESK9-M
>
> 103-1#conf t
> Enter configuration commands, one per line.  End with CNTL/Z.
> 103-1(config)#ipv6 access-list test
> 103-1(config-ipv6-acl)#permit tcp any host 2620:0:950:1:2c0:f0ff:fe5a:abe8 eq 25
> 103-1(config-ipv6-acl)#permit tcp any host 2607:fe70:0:1:2c0:f0ff:fe5a:abe8 eq 25
> 103-1(config-ipv6-acl)#end

If I read it correctly, the problem was when applying the ACL to an 
interface, not defining the ACL?

I get exactly the same as the OP:

noc-rt1(config)#ipv6 access-list TEST
noc-rt1(config-ipv6-acl)#permit tcp any host 
2607:FE70:0:1:2C0:F0FF:FE5A:ABE8 sequence 30

...so it defines fine, then:

noc-rt1(config-ipv6-acl)#int vl51
noc-rt1(config-if)#ipv6 traffic-filter TEST in
% This ACL contains following unsupported entries.
% Remove those entries and try again.
     permit tcp any host 2607:FE70:0:1:2C0:F0FF:FE5A:ABE8 sequence 30
% This ACL can not be attached to the interface.


...this on 12.2(52)SE


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