The router ASR1006 we have P2P link terminating on serial interface ( channelized E1 ) which has ppp encapsulation . But suddenly yesterday 6 of our P2P link went down while troubleshooting we observed when we use hdlc as encapsulation link came up . Further on troubleshooting we removed the working link ppp encapsulation and reinsert the ppp encapsulation back but the link didn't came up . We have checked at remote router , and confirmed that on it encapsulation is also ppp . Also service provider confirmed that there is just a transmission in between those P2P which went down , and they don't have provision to set any encapsulation on there end.
NAME: "SPA subslot 0/1", DESCR: "8-port Channelized T1/E1 to DS0 Shared Port Adapter" PID: SPA-8XCHT1/E1 , VID: V05, SN:
NAME: "SPA subslot 0/2", DESCR: "8-port Channelized T1/E1 to DS0 Shared Port Adapter" PID: SPA-8XCHT1/E1 , VID: V05, SN:
NAME: "SPA subslot 0/3", DESCR: "8-port Channelized T1/E1 to DS0 Shared Port Adapter" PID: SPA-8XCHT1/E1 , VID: V05, SN:
Further with troubleshooting , we have terminated the P2P link on the different router and found the P2P link UP with PPP encapsulation .
Also attaching the respective logs for the same & provide me further suggestion on this case if these cards gone faulty at the same time or some other issue
The sample configuration is below,
interface Multilink9 description *** Multilink To SION_EAST 4MB Se0/2/6:0 & Se0/3/4:0 *** bandwidth 4096 ip address 188.8.131.52 255.255.255.252 no ip redirects no ip proxy-arp ip flow ingress ip flow egress no peer neighbor-route ppp multilink ppp multilink interleave ppp multilink group 9
interface Serial0/3/5:0 description *** 2nd SION-EAST MTNL CKT ID:M4-SION4-20037-UBIP *** bandwidth 2048 no ip address no ip redirects no ip unreachables ip flow ingress ip flow egress encapsulation ppp ppp multilink ppp multilink group 9
Information provided by you is not sufficient. An output of "debug ppp negotiation" at both end of the circuit may help here. You can also try bringing those link out from Multilink and check if link comes up.