Hi,
I am trying to migrate LNS function from a CISCO 4431 router to a CSR1000v virtual router, but the VPDN not working after migration. I am thinking about a bug or a software problem on the CSR1000v, but couldn't find a related topic on the bug search tool or release notes. Do someone have any idea?
I am keeping the same config including IP addresses.
- The l2tp tunnels establish between LAC and LNS
- The sites are able to establish PPPoE session to the new LNS router CSR1000v
- from the new LNS router, I can see routes installed (including LAN routes) from sites but I am not able to PING any of the sites WAN IPs from the LNS that are assigned IP addresses from the /24 subnet I configured in the LNS
-I opened debug on one of the site routers, I can see that it installed the IPCP route to the LNS as well. PPP session becomes up but after around 4 mins because of missed PPP keepalives PPP session become down like below logs. :
Jun 3 21:26:34: Vi1 PPP: Phase is FORWARDING, Attempting Forward
*Jun 3 21:26:34: Vi1 PPP: Queue IPCP code[1] id[1]
*Jun 3 21:26:34: Vi1 PPP: Phase is ESTABLISHING, Finish LCP
*Jun 3 21:26:34: Vi1 PPP: Phase is UP
*Jun 3 21:26:34: Vi1 IPCP: Protocol configured, start CP. state[Initial]
*Jun 3 21:26:34: Vi1 IPCP: Event[OPEN] State[Initial to Starting]
*Jun 3 21:26:34: Vi1 IPCP: O CONFREQ [Starting] id 1 len 10
*Jun 3 21:26:34: Vi1 IPCP: Address 10.1.1.22 (0x03060A013216)
*Jun 3 21:26:34: Vi1 IPCP: Event[UP] State[Starting to REQsent]
*Jun 3 21:26:34: Vi1 PPP: Process pending ncp packets
*Jun 3 21:26:34: Vi1 IPCP: Redirect packet to Vi1
*Jun 3 21:26:34: Vi1 IPCP: I CONFREQ [REQsent] id 1 len 10
--More-- *Jun 3 21:26:34: Vi1 IPCP: Address 10.1.1.250 (0x03060A0132FA)
*Jun 3 21:26:34: Vi1 IPCP: O CONFACK [REQsent] id 1 len 10
*Jun 3 21:26:34: Vi1 IPCP: Address 10.1.1.250 (0x03060A0132FA)
*Jun 3 21:26:34: Vi1 IPCP: Event[Receive ConfReq+] State[REQsent to ACKsent]
*Jun 3 21:26:34: %LINEPROTO-5-UPDOWN: Line protocol on Interface Virtual-Access1, changed state to up
*Jun 3 21:26:34: Vi1 IPCP: I CONFACK [ACKsent] id 1 len 10
*Jun 3 21:26:34: Vi1 IPCP: Address 10.1.1.22 (0x03060A013216)
*Jun 3 21:26:34: Vi1 IPCP: Event[Receive ConfAck] State[ACKsent to Open]
*Jun 3 21:26:34: Vi1 IPCP: State is Open
*Jun 3 21:26:34: Di1 IPCP: Install route to 10.1.1.250
*Jun 3 21:30:44: Vi1 PPP: Missed 5 keepalives, taking LCP down
*Jun 3 21:30:44: Vi1 PPP DISC: Missed too many keepalives
*Jun 3 21:30:44: Vi1 IPCP: Event[DOWN] State[Open to Starting]
*Jun 3 21:30:44: Vi1 IPCP: Event[CLOSE] State[Starting to Initial]
*Jun 3 21:30:44: Vi1 LCP: O TERMREQ [Open] id 2 len 4
*Jun 3 21:30:44: Vi1 LCP: Event[CLOSE] State[Open to Closing]
*Jun 3 21:30:44: Vi1 PPP: Phase is TERMINATING
*Jun 3 21:30:44: Vi1 LCP: Event[DOWN] State[Closing to Initial]
*Jun 3 21:30:44: Vi1 PPP: Phase is DOWN
*Jun 3 21:30:44: Di1 IPCP: Remove route to 10.1.1.250
*Jun 3 21:30:44: PPPoE : Shutting down client session
