6to4 on a Cisco

[Matthew Goddard]

On the Ethernet 0/0 add this command:

ip mtu 1480

And assuming you have converted the IPv4 address correctly to it's hex
equivalent it looks like it should work then. Make sure you check the
routing tables as well.

Hope this helps.

-----Original Message-----
From: owner-6bone@ISI.EDU [mailto:owner-6bone@ISI.EDU]On Behalf Of Erik
Rietberg
Sent: Sunday, January 21, 2001 9:33 AM
To: 6bone@ISI.EDU
Subject: 6to4 on a Cisco


Has somebody ever configured 6to4-tunneling on a Cisco ???

I tried, but I can't get it work. I have been using the IPv6 kit from
Microsoft for Windows2000, which perfectly connects to the microsoft
6to4-relay router, but when I try to use my own Cisco I get the following
error:
<>
c:\>6to4cfg -R 213.x.x.x
Probing 6to4 relay router 213.x.x.x...
Could not reach a 6to4 relay router.
<>

This means that to problem is with the Cisco router. I got the config from
the IPv6-IOS command list:
I use the following IOS version:
<>
IOS (tm) 3600 Software (C3620-IS-M), Experimental Version
12.1(20001029:175720) [otroan-samhain 114]
<>

<config for Sixco>
interface Tunnel0
 description Used for 6to4 translations
 no ip address
 no ip redirects
 no ip route-cache cef
 ipv6 unnumbered Ethernet0/0
 tunnel source Ethernet0/0
 tunnel mode ipv6ip 6to4
!
interface Ethernet0/0
 ip address 213.x.x.x 255.255.255.224
 no ip redirects
 no ip proxy-arp
 ip route-cache flow
 half-duplex
 ipv6 address 2002:XXX:XXX::/48 eui-64
!
ipv6 route 2002::/16 Tunnel0
<>

b.t.w. Static tunnels to my linux-box work fine !

greetings,
________________________________________________________
Erik Rietberg
erietberg@chello.nl / erik@rietberg.nl / PGP: 0x09CE3401
________________________________________________________
'Do files get embarrassed when they get unzipped?'