I would like to use IP SLA to monitor udp jitter/loss over multicast. Is this supported? What about just packet loss?
I can't find any mention of if it can be done or not in the documentation. The only mention on google I found is from 6 years ago here (see pdf pages 85-87): http://www.cisco.com/en/US/prod/collateral/iosswrel/ps6537/ps6552/prod_presentation0900aecd806694e4.pdf At the time it seemed the message was "try again later". Regardless, I decided to try anyways without much luck. The control packets get to the destination just fine by multicast as shown by the sender and receiver, but the host never seems to send the data packets, instead claiming "No connection" in the show ip sla commands. In some cases, it would say "1997" packets tail dropped (out of 2000). I only tried the udp-jitter option, but perhaps one of the others which don't require a responder might be more suitable. I'm ok with data collection only being at the receiver. Or more likely, it's just not possible. Various config/show commands below. config: -------ip sla sender------ ip sla 1 udp-jitter 232.1.100.1 5555 source-ip 1.1.1.1 num-packets 2000 interval 4 request-data-size 64 int loopback0 ip pim sparse-mode ip addr 1.1.1.1 255.255.255.255 mroute shows traffic sent by the IP SLA: (1.1.1.1, 232.1.100.1), 00:36:16/00:02:42, flags: sT Incoming interface: Loopback0, RPF nbr 0.0.0.0 Outgoing interface list: GigabitEthernet0/0, Forward/Sparse, 00:36:16/00:02:42 Group: 232.1.100.1, Source count: 1, Packets forwarded: 12, Packets received: 12 Source: 1.1.1.1/32, Forwarding: 12/0/80/0, Other: 12/0/0 show ip sla statistics: #show ip sla statistics IPSLAs Latest Operation Statistics IPSLA operation id: 1 Type of operation: udp-jitter Latest RTT: NoConnection/Busy/Timeout Latest operation start time: *01:58:39.317 UTC Sat Mar 5 2011 Latest operation return code: No connection RTT Values: Number Of RTT: 0 RTT Min/Avg/Max: 0/0/0 milliseconds Latency one-way time: Number of Latency one-way Samples: 0 Source to Destination Latency one way Min/Avg/Max: 0/0/0 milliseconds Destination to Source Latency one way Min/Avg/Max: 0/0/0 milliseconds Jitter Time: Number of SD Jitter Samples: 0 Number of DS Jitter Samples: 0 Source to Destination Jitter Min/Avg/Max: 0/0/0 milliseconds Destination to Source Jitter Min/Avg/Max: 0/0/0 milliseconds Packet Loss Values: Loss Source to Destination: 0 Loss Destination to Source: 0 Out Of Sequence: 0 Tail Drop: 0 Packet Late Arrival: 0 Packet Skipped: 0 Voice Score Values: Calculated Planning Impairment Factor (ICPIF): 0 Mean Opinion Score (MOS): 0 Number of successes: 0 Number of failures: 1 Operation time to live: 0 ---------ip sla responder----------- interface Loopback0 ip address 2.2.2.2 255.255.255.255 ip pim sparse-mode ip igmp join-group 232.1.100.1 source 1.1.1.1 show ip sla responder IP SLAs Responder is: Enabled Number of control message received: 27 Number of errors: 0 Recent sources: 1.1.1.1 [01:54:57.463 UTC Sat Mar 5 2011] 1.1.1.1 [01:54:52.459 UTC Sat Mar 5 2011] 1.1.1.1 [01:54:47.459 UTC Sat Mar 5 2011] 1.1.1.1 [01:52:57.703 UTC Sat Mar 5 2011] 1.1.1.1 [01:52:52.699 UTC Sat Mar 5 2011] Recent error sources: udpEcho Responder: _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
