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IPv6 Routing Assistance

greg.bessette
Level 1
Level 1

I am trying to setup a test IPv6 network. Currently I have built a VMware infrastructure that can handle both IPv4 and IPv6 traffic. I have connected a physical port from the ESX server to begin connecting real world devices. I am trying to implement IPv6 routing on a Cisco 1812 series router. The IOS version is C181X-ADVIPSERVICESK9-M), version 12.4(6)T8. So far I am able to route IPv4 packets across this mixed network of IPv4 and IPv6. I have followed a multitude of directions to get IPv6 working to no avail. Attached is the network topology and the current running configuration from the router.

The router would be placed in between the virtual and physical networks.

Is there someone who could peruse the documents and let me know where I am going wrong?

Thanks for any assistance

Greg

Please move if I placed in the wrong forum section.

21 Replies 21

Here are the results for both commands:

show ipv6 rip

RIP process "cisco", port 521, multicast-group FF02::9, pid 44

Administrative distance is 120. Maximum paths is 16

Updates every 30 seconds, expire after 180

Holddown lasts 0 seconds, garbage collect after 120

Split horizon is on; poison reverse is off

Default routes are not generated

Periodic updates 48, trigger updates 2

Interfaces:

FastEthernet1

FastEthernet0

Redistribution:

None

debug ipv6 rip

*Dec 1 19:28:29.715: RIPng: Sending multicast update on FastEthernet1 for cisco

*Dec 1 19:28:29.715: src=FE80::21D:45FF:FE89:D377

*Dec 1 19:28:29.715: dst=FF02::9 (FastEthernet1)

*Dec 1 19:28:29.715: sport=521, dport=521, length=52

*Dec 1 19:28:29.715: command=2, version=1, mbz=0, #rte=2

*Dec 1 19:28:29.715: tag=0, metric=1, prefix=2001:DB8:0:3::/64

*Dec 1 19:28:29.715: tag=0, metric=1, prefix=2001:DB8:0:4::/64

*Dec 1 19:28:29.715: RIPng: Sending multicast update on FastEthernet0 for cisco

*Dec 1 19:28:29.715: src=FE80::21D:45FF:FE89:D376

*Dec 1 19:28:29.715: dst=FF02::9 (FastEthernet0)

*Dec 1 19:28:29.715: sport=521, dport=521, length=52

*Dec 1 19:28:29.715: command=2, version=1, mbz=0, #rte=2

*Dec 1 19:28:29.715: tag=0, metric=1, prefix=2001:DB8:0:3::/64

*Dec 1 19:28:29.715: tag=0, metric=1, prefix=2001:DB8:0:4::/64

*Dec 1 19:28:58.911: RIPng: Sending multicast update on FastEthernet1 for cisco

*Dec 1 19:28:58.911: src=FE80::21D:45FF:FE89:D377

*Dec 1 19:28:58.911: dst=FF02::9 (FastEthernet1)

*Dec 1 19:28:58.911: sport=521, dport=521, length=52

*Dec 1 19:28:58.911: command=2, version=1, mbz=0, #rte=2

*Dec 1 19:28:58.911: tag=0, metric=1, prefix=2001:DB8:0:3::/64

*Dec 1 19:28:58.911: tag=0, metric=1, prefix=2001:DB8:0:4::/64

*Dec 1 19:28:58.911: RIPng: Sending multicast update on FastEthernet0 for cisco

*Dec 1 19:28:58.911: src=FE80::21D:45FF:FE89:D376

*Dec 1 19:28:58.911: dst=FF02::9 (FastEthernet0)

*Dec 1 19:28:58.911: sport=521, dport=521, length=52

*Dec 1 19:28:58.911: command=2, version=1, mbz=0, #rte=2

*Dec 1 19:28:58.911: tag=0, metric=1, prefix=2001:DB8:0:3::/64

*Dec 1 19:28:58.911: tag=0, metric=1, prefix=2001:DB8:0:4::/64

*Dec 1 19:29:28.599: RIPng: Sending multicast update on FastEthernet1 for cisco

*Dec 1 19:29:28.599: src=FE80::21D:45FF:FE89:D377

*Dec 1 19:29:28.599: dst=FF02::9 (FastEthernet1)

*Dec 1 19:29:28.599: sport=521, dport=521, length=52

*Dec 1 19:29:28.599: command=2, version=1, mbz=0, #rte=2

*Dec 1 19:29:28.599: tag=0, metric=1, prefix=2001:DB8:0:3::/64

*Dec 1 19:29:28.599: tag=0, metric=1, prefix=2001:DB8:0:4::/64

*Dec 1 19:29:28.599: RIPng: Sending multicast update on FastEthernet0 for cisco

Greg,

This router is sending updates but not receiving any. What is the device that we are supposed to be receiving updates from? Whatever it is something seems not to be functioning as it should.

Regards

Regards,
Harold Ritter, CCIE #4168 (EI, SP)

I had built a VM network using Windows Server 2003 RAS. It is using static routes but the Windows server is sending out router advertisements based on the packect captures. Both the Windows box and the Cisco router are advertising using the link local address going to destination ff02::1.

Would using static routes be the main issue?

I apologize for all the questions but I am new to IPv6.

Thanks

Greg,

You can use static routes if that satisfies the requirements but if you want dynamic routing updates between the cisco router and the Windows RAS server, you will need to enable RIPng on the server as well. I am not sure whether Windows Server 2003 RAS does support RIPng.

Receiving the router advertisement (RA) on the router will not be a great help unless you use the router as a workstation.

Regards

Regards,
Harold Ritter, CCIE #4168 (EI, SP)

How should I set up the router then? Should I build a static route with a static IPv6 address? I am researching if I can enable RIPng on Windows Server 2003 RAS.

Thanks

Greg,

The easiest for now would probably be to configure static routes.

According to your visio diagram, the Cisco router seems to be at the edge of the network. You could install a default route on the Cisco router pointing at the Windows 2003 Server and a static route for 2001:db8:0:3::/64 or 2001:db8:0:4::/64 (depending on which subnet is connecting the router and the server) on the server pointing at the Cisco router.

Regards

Regards,
Harold Ritter, CCIE #4168 (EI, SP)

I removed most of my VMware infrastructure and connected my 1812 to the 2001:db8:0:1::/64 network and then connected my next 1812 and can perform RIPng across all three networks.

Thanks again for the assistance.

Greg