Wired Intelligent Edge (Campus Switching and Routing)

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Occasional Contributor II

IPv6 routing with Aruba 8320

I configured the routing on an Aruba 8320 (ArubaOS-CX 10.01) but it doesn't route IPv6 traffic. IPv4 works fine. It is also possible to ping6 locations in the internet via the router CLI. The RA commands reach the clients correctly. 

 

Here are some config details:

 

interface vlan501 

    ip address XX.XX.XX.XX/26

    ipv6 address 2001:XXX:XXX:XXXX::1/64

    ipv6 nd ra min-interval 5

    ipv6 nd ra max-interval 10

    ipv6 nd ra lifetime 300

    ipv6 nd ra retrans-timer 10

    ipv6 nd ra other-config-flag

    no ipv6 nd suppress-ra

ip route 0.0.0.0/0 XX.XX.XX.9

ipv6 route ::/0 2001:XXX:XXX:ff1a::1

 

Do I need to configure something else in order to get IPv6 routing to work?

Aruba Employee

Re: IPv6 routing with Aruba 8320

I don't think you need to turn on any special command to activate v6 routing in CX, I've got a small lab setup running and v6 is routing with minimal config, just the addresses on the interfaces and statics.

 

Have you eliminated the basics?

 

  • Can the client ping the LAN (local) side gateway?
  • Can the client ping the remote side port of the gatway?
  • Is the gatway advertising the LAN side prefix?

If all that is good you could try statically configuring the client to eliminate the RA process.

If all that is ok and you've still got a problem, let me know what version of CX you're running and I'll try to recreate your setup.

 

 

Occasional Contributor II

Re: IPv6 routing with Aruba 8320


@joeneville

Have you eliminated the basics?

 

  • Can the client ping the LAN (local) side gateway?
  • Can the client ping the remote side port of the gatway?
  • Is the gatway advertising the LAN side prefix?

Thanks for the response.

When the client (in the case a Macbook) is configured autmatically i can ping the gateway with its link-local address, but not it's LAN address.

When I select "manual" for IPv6 on the Macbook (no changes done, just selecting the manual mode), I can reach the gateway via both addresses and have IPv6 connectivity.

So it seems there is no problem with the IPv6 routing.

I will have to investigate why the devices do not work when configured automatically.

Highlighted
Occasional Contributor II

Re: IPv6 routing with Aruba 8320

Do you have any idea why the devices wouldn't be able to connect? 

On windows devices the field for the standart gateway stays empty, even after a correct router advertisment arrives.

Aruba Employee

Re: IPv6 routing with Aruba 8320

Ok, so we've eliminated the routing part, let's focus on the LAN.

What is your desired address allocation method? Looks like you are using SLAAC and you're setting the O flag so do you have DHCPv6 set up as well? If so, what DHCPv6 server are you using?

Occasional Contributor II

Re: IPv6 routing with Aruba 8320

Thanks for the help. The problem was found. A network monitoring server automatically copied all RA and send them again with a lifetime of 0. This was causing the clients to not accept the configuration. The problem is now resolved.

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