Multicast: strange show ip mroute
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12-05-2012 06:47 AM - edited 03-07-2019 10:25 AM
I got the following from a show ip mroute mcast-group:
#sh ip mroute 224.0.15.34 count
IP Multicast Statistics
1577 routes using 919202 bytes of memory
705 groups, 1.23 average sources per group
Forwarding Counts: Pkt Count/Pkts(neg(-) = Drops) per second/Avg Pkt Size/Kilobits per second
Other counts: Total/RPF failed/Other drops(OIF-null, rate-limit etc)
Group: 224.0.15.34, Source count: 20, Packets forwarded: 1302, Packets received: 1302
RP-tree: Forwarding: 74/0/30/0, Other: 74/0/0
Source: 172.16.91.5/32, Forwarding: NC/NC/NC/NC, Other: NC/NC/NC
Source: 172.16.91.13/32, Forwarding: NC/NC/NC/NC, Other: NC/NC/NC
Source: 172.16.91.14/32, Forwarding: NC/NC/NC/NC, Other: NC/NC/NC
Source: 172.16.91.4/32, Forwarding: 201/1/30/0, Other: 201/0/0
Source: 172.16.91.6/32, Forwarding: 201/1/30/0, Other: 201/0/0
Does anybody have an idea of what NC/NC/NC stays for ?
Tks
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12-05-2012 07:09 AM
NC means there is no hardware counter availble for that entry
If it is 4k, I think the limit is 1k routes for HW counters.
Thnak you
Raju
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12-05-2012 08:00 AM
How can I verify it ?
IT seems 4 K anyway...
#sh ip mroute 224.0.15.34 active
Active IP Multicast Sources - sending >= 4 kbps
a negative ( - ) Rate counts pps being fast-dropped
Tks
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12-05-2012 08:02 AM
#sh ip mroute 224.0.15.34 count
IP Multicast Statistics
1577 routes using 919202 bytes of memory
It shows that you have more than 1K routes
Thanks
Raju
