Help with enabling IPV6 needed

[joao.mbranco]

Hi. I want to implement IPv6 on my network, I am preparing a test environment with a Cisco 2821 router and a couple of servers/switches. My problem lies with the router. Had 12.4 IOS image, in config mode it did not recognize ANY command starting with "ipv6", I upgraded the IOS to a more recent one, the current ouput of the show version command is as follows:

Cisco IOS Software, 2800 Software (C2800NM-SPSERVICESK9-M), Version 15.1(3)T, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2010 by Cisco Systems, Inc.
Compiled Mon 15-Nov-10 21:41 by prod_rel_team

ROM: System Bootstrap, Version 12.4(13r)T, RELEASE SOFTWARE (fc1)

Router uptime is 21 hours, 39 minutes
System returned to ROM by reload at 16:04:30 UTC Wed Mar 23 2011
System image file is "flash:c2800nm-spservicesk9-mz.151-3.T.bin"
Last reload type: Normal Reload

Now it recognizes commands starting with "ipv6", like "ipv6 unicast-routing", but when I enter any interface, say... "interface fastethernet 1/10" and then try to give any ipv6 command, like "ipv6 enable" it simply does not recognizes the "ipv6" commands...

Can anyone help me on this one

thanks in advance

[wzhang]

Hi,

The IOS version and feature set you have should have full ipv6 support. As a matter of fact, I tried it on my 2821 and I was able to configure ipv6 just fine:

myrouter(config)#do sh ver
Cisco IOS Software, 2800 Software (C2800NM-SPSERVICESK9-M), Version 15.1(3)T, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2010 by Cisco Systems, Inc.
Compiled Mon 15-Nov-10 21:41 by prod_rel_team
         
myrouter(config)#
myrouter(config)#int g0/0
myrouter(config-if)#ipv6 ?
IPv6 interface subcommands:
  address             Configure IPv6 address on interface
  authentication      authentication subcommands
  bandwidth-percent   Set EIGRP bandwidth limit
  cef                 Cisco Express Forwarding for IPv6
  dampening-change    Percent interface metric must change to cause update
  dampening-interval  Time in seconds to check interface metrics
  dhcp                IPv6 DHCP interface subcommands
  eigrp               Configure EIGRP IPv6 on interface
  enable              Enable IPv6 on interface

...

Is it possible that you have a parser view configured? Could you provide the output of "show parser view" and "show subsys | in ipv6_", and "?" from the interface config mode?

Thanks,

Wen

[joao.mbranco]

Thank you for your prompt reply.

I "stumbled" into the solution

When configuring a previously unconfigured interface one needs to enter a no switchport command before even trying to do an ipv6 command

oh well...

[cadet alain]

Hi,

When configuring a previously unconfigured interface one needs to enter a no switchport command before even trying to do an ipv6 command

It would have been the same for any ipv4 command because the f1 ports are L2 switch ports by default.

Regards.

Alain.

[SASipraPK]

kindy check my post with heading "Implementation of NAT64 and DNS64" it will help you for your project