From: CCIE3000 (ccie3000@googlemail.com)
Date: Sat May 31 2008 - 10:14:28 ART
Just checking to see that I've got this straight in my head.
When a question has wording along the lines of:
Configure IPv6 tunnel over IPv4 network
We should use tunnel mode gre ?
From the follwoing debugs with tunnel mode ipv6ip I get the following:
l13: IPv6/IP encapsulated 150.1.3.3->150.1.1.1 (linktype=79, len=92)
*May 31 12:55:37.277: Tunnel13: IPv6/IP to classify
150.1.1.1->150.1.3.3(len=92 ttl=253 tos=0xE0)
*May 31 12:55:37.277: Tunnel13: to decaps IPv6/IP packet 150.1.1.1->
150.1.3.3 (len=92, ttl=253)
*May 31 12:55:37.277: Tunnel13: decapsulated IPv6/IP packet
With tunnel mode gre I get the following:
*May 31 12:58:11.573: Tunnel13: GRE/IP encapsulated
150.1.3.3->150.1.1.1(linktype=79, len=124)
*May 31 12:58:11.609: Tunnel13: GRE/IP to classify
150.1.1.1->150.1.3.3(len=124 type=0x86DD ttl=253 tos=0x0)
Also using debug ip packet detail I'm seeing protocol 47 with GRE and
protocol 41 when ipv6ip.
Firstly, am I correct to use mode gre and secondly any tips on what to look
for in a question to decide the tunnel mode if it's not stated?
Thanks,
This archive was generated by hypermail 2.1.4 : Mon Jun 02 2008 - 06:59:19 ART