Hi,
I know this is Juniper forums and this issue could be Juniper related or it could be Cisco, so I am starting intuitively at the Juniper side. Set up:
RADIUS (freeRADIUS) --> SRX1500 --> MX240 (core) --> MX240 (LNS) --> Cisco 2620 (LAC) --> Cisco 1841 (CPE)
IPv4 works from end to end with no issues at all. For IPv6, I am using the foolowing 2 attributes on the Radius:
Framed-IPv6-Prefix
Framed-IPv6-Address
When an authentication request comes in from the CPE, this is the response from the RADIUS:
Sent Access-Accept Id 80 from 195.80.0.38:1812 to 195.80.0.13:65235 length 0
Framed-IPv6-Prefix = 2a05:d840:9d::/56
Framed-IPv6-Address = 2a05:d840:9d:ffff:ffff:ffff:0:1
This is excellent. The RADIUS is respondin with the attributes as I have asked it to.
What I see at the CPE during a debug is this:
*Mar 17 23:28:59.194: %LINK-3-UPDOWN: Interface Serial0/0, changed state to up
*Mar 17 23:28:59.606: IPV6: source FE80::212:FF:FE8D:8980 (local)
*Mar 17 23:28:59.606: dest FF02::1 (Serial0/0)
*Mar 17 23:28:59.606: traffic class 224, flow 0x0, len 64+16, prot 58, hops 255, originating
*Mar 17 23:28:59.606: IPv6: Sending on Serial0/0
*Mar 17 23:28:59.606: IPV6: source FE80::212:FF:FE8D:8980 (local)
*Mar 17 23:28:59.606: dest FF02::16 (Serial0/0)
*Mar 17 23:28:59.606: traffic class 224, flow 0x0, len 76+0, prot 0, hops 1, originating
*Mar 17 23:28:59.606: IPv6: Sending on Serial0/0
*Mar 17 23:28:59.606: IPV6: source FE80::212:FF:FE8D:8980 (local)
*Mar 17 23:28:59.606: dest FF02::16 (Serial0/0)
When I look at the interface I see that an IPv4 address has been assigned by the LNS pool range (as expected as the back up to the RADIUS if it was to fail).
Serial0/0 192.168.85.20 YES IPCP up up
The wireshark trace seems to indicate that the LNS is sending or forwarding the IPv6 request.... I really do not know where the problem is regarding this. I have configured the LNS as per instructions and it should be working okay.....
Any help would be appreciated.
Thanks