Given the patterned packet loss, I would suspect some kind of rate limiting. Where it is happening I cannot say. It could be built in to the pseudowire code.
Mack McBride | Network Architect | ViaWest, Inc. O: 720.891.2502 | mack.mcbr...@viawest.com | www.viawest.com | LinkedIn | Twitter | YouTube -----Original Message----- From: cisco-nsp [mailto:cisco-nsp-boun...@puck.nether.net] On Behalf Of Ivan Sent: Tuesday, July 22, 2014 4:16 AM To: cisco-nsp Subject: Re: [c-nsp] Cisco 7600 pseudowire ping Interesting enough regular mpls ping has no issue: PE1#ping mpls ipv4 172.16.14.1/32 repeat 100 Sending 100, 100-byte MPLS Echos to 172.16.14.1/32, timeout is 2 seconds, send interval is 0 msec: Codes: '!' - success, 'Q' - request not sent, '.' - timeout, 'L' - labeled output interface, 'B' - unlabeled output interface, 'D' - DS Map mismatch, 'F' - no FEC mapping, 'f' - FEC mismatch, 'M' - malformed request, 'm' - unsupported tlvs, 'N' - no label entry, 'P' - no rx intf label prot, 'p' - premature termination of LSP, 'R' - transit router, 'I' - unknown upstream index, 'X' - unknown return code, 'x' - return code 0 Type escape sequence to abort. !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Success rate is 100 percent (100/100), round-trip min/avg/max = 1/2/4 ms PE1#ping mpls pseudowire 172.16.14.1 440 repeat 100 Sending 100, 100-byte MPLS Echos to 172.16.14.1, timeout is 2 seconds, send interval is 0 msec: Codes: '!' - success, 'Q' - request not sent, '.' - timeout, 'L' - labeled output interface, 'B' - unlabeled output interface, 'D' - DS Map mismatch, 'F' - no FEC mapping, 'f' - FEC mismatch, 'M' - malformed request, 'm' - unsupported tlvs, 'N' - no label entry, 'P' - no rx intf label prot, 'p' - premature termination of LSP, 'R' - transit router, 'I' - unknown upstream index, 'X' - unknown return code, 'x' - return code 0 Type escape sequence to abort. !!!!!!!!!!!!!!.!!!!!!!!!!!!!.!!!!!!!!!!!!!!.!!!!!!!!!!!!!!.!!!!!!!!!!! !!!.!!!!!!!!!!!!!.!!!!!!!!!!!! Success rate is 94 percent (94/100), round-trip min/avg/max = 1/2/4 ms PE1# And the rate-limit output on the destination: PE2#show mls rate-limit | in Rate|On|UCAST Rate Limiter Type Status Packets/s Burst Sharing MCAST DFLT ADJ On 100000 100 Not sharing ACL VACL LOG On 2000 1 Not sharing MCAST PARTIAL SC On 100000 100 Not sharing IP RPF FAILURE On 100 10 Group:0 S TTL FAILURE On 97 10 Not sharing ICMP UNREAC. NO-ROUTE On 100 10 Group:0 S ICMP UNREAC. ACL-DROP On 100 10 Group:0 S MTU FAILURE On 997 10 Not sharing UCAST IP OPTION Off - - - IP ERRORS On 100 10 Group:0 S As mentioned before we are only seeing this on devices where we are running 15.2(4)S4a Thanks Ivan On 21/Jul/2014 7:56 p.m., Vitkovský Adam wrote: > And how about the regular mpls ping does that perform right? > > I'd check the rate limiters: > > show mls rate-limit > and look for UCAST IP OPTION -is it ON or OFF though it should be off > by default > > adam > >> -----Original Message----- >> From: cisco-nsp [mailto:cisco-nsp-boun...@puck.nether.net] On Behalf >> Of Ivan >> Sent: Sunday, July 20, 2014 12:58 AM >> To: Peter Persson >> Cc: cisco-nsp >> Subject: Re: [c-nsp] Cisco 7600 pseudowire ping >> >> No CoPP. Direct ping is fine. Just the PW ping having issues. >> >> On 20/Jul/2014 2:13 a.m., Peter Persson wrote: >>> Do you have any Control-plane policing? >>> As i understand your email, you are pinging between two 7600's >>> directly and not anything behind it? >>> >>> >>> >>> >>> 2014-07-19 13:47 GMT+02:00 Ivan <cisco-...@itpro.co.nz >>> <mailto:cisco-...@itpro.co.nz>>: >>> >>> I have found that mpls pseudowire pings to some 7600s running >>> 15.2(4)S4a go missing - I see about 95/100 success rate. On other >>> devices with older software I have no loss. The problem is not seen >>> if the ping interval is increased to 100ms. Also pinging over the >>> VC shows no loss. >>> >>> Given the above I suspect some rate-limiting may be taking place. I >>> am hoping someone will be able to confirm and ideally share some >>> commands that show come counters for the drops as so far I have had >>> no success. >>> >>> c7600s72033-advipservicesk9-__mz.152-4.S4a.bin >>> WS-X6704-10GE >>> WS-SUP720-3BXL >>> >>> Thanks >>> >>> Ivan >>> _________________________________________________ >>> cisco-nsp mailing list cisco-nsp@puck.nether.net >>> <mailto:cisco-nsp@puck.nether.net> >>> https://puck.nether.net/__mailman/listinfo/cisco-nsp >>> <https://puck.nether.net/mailman/listinfo/cisco-nsp> >>> archive at http://puck.nether.net/__pipermail/cisco-nsp/ >>> <http://puck.nether.net/pipermail/cisco-nsp/> >>> >>> >> _______________________________________________ >> cisco-nsp mailing list cisco-nsp@puck.nether.net >> https://puck.nether.net/mailman/listinfo/cisco-nsp >> archive at http://puck.nether.net/pipermail/cisco-nsp/ _______________________________________________ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/ _______________________________________________ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/