Hello,
I am having an issue with a M2PA linkset going down like 10 times a day for a period of 20s. I believe this can be fixed by tuning the timeouts but I am unable to find the good commands.
This is the log:
Jan 24 14:14:43.814 GMT: %CS7M2PA-3-DESTADDRINA: Destination IP Address 5.5.5.5 inactive for linkset:slc Linkset0:0
Jan 24 14:14:43.822 GMT: %CS7MTP3-3-LINKNOTUP: Link 0 in linkset Linkset0 failed. Reason=communication lost
Jan 24 14:14:43.822 GMT: %CS7MTP3-5-LINKUPDOWN: Link 0 in linkset Linkset0 is unavailable
Jan 24 14:14:43.834 GMT: SCTP: Invalid association state for sctp_send
Jan 24 14:14:44.623 GMT: %CS7MTP3-3-LINKSETSTATE: Linkset Linkset0 is unavailable
Jan 24 14:14:44.972 GMT: DEAD snmpAssocP:0x83B088EC assocP:0x8397EC84 Id:0x002C0151 dc: 17 avl: 18
Jan 24 14:14:45.044 GMT: SCTP: Out-of-the-blue datagram rcvd from addr 5.5.5.5, port 4444, discarding...
Jan 24 14:14:45.048 GMT: SCTP: Out-of-the-blue datagram rcvd from addr 5.5.5.5, port 4444, discarding...
Jan 24 14:14:59.973 GMT: ENTRY DELETE_OLD: Force:False delta:52910643 purgeTime:86400 MaxHeld:100
Jan 24 14:14:59.973 GMT: DeadCount:18 AvlCount:18
Jan 24 14:14:59.973 GMT: entriesProcessed:18 deleteByCount:0 deleteByTime:7
Jan 24 14:14:59.973 GMT: CREATE snmpAssocP:0x83B01E5C assocP:0x8397EC84 Id:0x002C0152 dc: 11 avl: 12
Jan 24 14:15:01.888 GMT: %CS7MTP3-5-ADJRBEGN: Adjacent SP restart beginning for linkset Linkset0
Jan 24 14:15:02.169 GMT: %CS7MTP3-5-LINKUPDOWN: Link 0 in linkset Linkset0 is available
Jan 24 14:15:02.413 GMT: %CS7MTP3-5-ADJRENDS: Adjacent SP restart ending for linkset Linkset0
Jan 24 14:15:02.413 GMT: %CS7MTP3-3-LINKSETSTATE: Linkset Linkset0 is available
show cs7 m2pa sctp parameters Linkset0
** SCTP Association Parameters AssocID:0x002C0158
AssocID: 0x002C0158 Instance ID: 0 Offload: No
Assoc state: ESTABLISHED Context: 2208044432 Uptime: 05:20:14.928
Local port: 4444
Local addresses: 2.2.2.2
Remote port: 4444
Primary dest addr: 5.5.5.5
Effective primary dest addr: 5.5.5.5
Destination addresses:
5.5.5.5 State: ACTIVE
Heartbeats: Enabled Timeout: 300 ms
RTO/RTT/SRTT: 330/257/270 ms TOS: 0 MTU: 1500
cwnd: 3044 ssthresh: 3000 outstand: 908
Retrans cwnd rate: 50 Retrans cwnd mode: RFC
FastRetrans cwnd rate: 50 Idle dest cwnd rate: 50
Num retrans: 22 Max retrans: 4 Num times failed: 0
202.144.184.12 retrans: 0
Local vertag: 7102ABE7 Remote vertag: 71D1A261
Num inbound streams: 2 outbound streams: 2
Max assoc retrans: 10 Max init retrans: 8
CumSack timeout: 200 ms Bundle timeout: 5 ms enabled
Min RTO: 250 ms Max RTO: 500 ms
LocalRwnd: 64000 Low: 58285 RemoteRwnd: 63092 Low: 61824
Congest levels: 4 current level: 0 high mark: 38 chkSum: crc32
In bold, the timeout of the hearbeats seems incredibly low compared to my RTO. But I dont find the command to increase it.
Thanks,
Mathieu
