Juniper EX and IPv6

Pekka Savola pekkas at netcore.fi
Sat Nov 8 07:56:03 CET 2008


On Fri, 7 Nov 2008, Dave Diller wrote:
>> Juniper EX-switches (when in L2 mode) don't forward IPv6 frames by default. 
>> DUH!
>
> What version of code was this?  It seems to work for me as is with trunked 
> ports, on 9.2R1.10.
>
> I've got an EX in the lab, with a GE trunked to each of two T-series.  I just 
> put an IPv6 address on the router subinterfaces and was able to ping across 
> after the ~10 second neighbor discovery process.  I don't remember 
> intentionally configuring anything to "enable" passing v6 through the box 
> since I wasn't aware of this until now.
>
> EX interfaces are plain vanilla:
>
>    ge-0/0/1 {
>        mtu 9216;
>        unit 0 {
>            family ethernet-switching {
>                port-mode trunk;
>                vlan {
>                    members [ 55 66 ];
>                }
>            }
>        }
>    }

This was 9.2.  We tested only non-tagged regular ports and had to add 
something like this:

interfaces {
   vlan {
     unit 0 {
       family inet6;
     }
   }
}

-- 
Pekka Savola                 "You each name yourselves king, yet the
Netcore Oy                    kingdom bleeds."
Systems. Networks. Security. -- George R.R. Martin: A Clash of Kings


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