Re: Understanding the ipv6 route table

From: brussels (brussels@yandex.ru)
Date: Wed Jun 08 2005 - 11:19:47 GMT-3


>Hi guys,
>
>This is a copy of the ipv6 route table from 1 of my routers. I need some
>help interpreting what's it's telling me.
>
>When I look at the "L" entries, it seems that they correspond to the
>preceding "C" entries except that they include the interface-id until I look
>at the last 2 "L" entries.
>
>What are these last 2 entries telling me and why are they there?
>
>TIA, Tim
>
>R4#sh ipv route
>IPv6 Routing Table - 7 entries
>Codes: C - Connected, L - Local, S - Static, R - RIP, B - BGP
> U - Per-user Static route
> I1 - ISIS L1, I2 - ISIS L2, IA - ISIS interarea
> O - OSPF intra, OI - OSPF inter, OE1 - OSPF ext 1, OE2 - OSPF ext 2
>R ::/0 [120/2]
> via FE80::2D0:BAFF:FE7B:F580, Serial0/0.24
>C 2001:144:3:24::/64 [0/0]
> via ::, Serial0/0.24
>L 2001:144:3:24:203:6BFF:FE21:9700/128 [0/0]
> via ::, Serial0/0.24
>C 2001:144:3:46::/64 [0/0]
> via ::, Ethernet0/0
>L 2001:144:3:46:203:6BFF:FE21:9700/128 [0/0]
> via ::, Ethernet0/0
>L FE80::/10 [0/0] <- What's this for ?
> via ::, Null0

All Link-Local prefixes. They by definition should not be forwarded.

>L FF00::/8 [0/0]
> via ::, Null0 <- What's this for?

This is prefix for multicast group. They all not forwarded by default.

>
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