| Information to Monitor | Command | Example |
| Entries in the multicast forwarding cache | show multicast route | user@host> show multicast route detail Group Source prefix Act Pru InIf NHid AgeOut Packets Session 224.0.1.1 128.112.0.0 /12 I P 4 0 0 0 Network Cloned from: 0.0.0.0 /0 Source: 128.112.136.5 224.0.1.32 160.0.0.0 /3 I P 4 0 0 0 mtrace Cloned from: 0.0.0.0 /0 Source: 171.68.27.126 224.2.123.4 136.0.0.0 /5 I P 4 0 0 0 Multimed Cloned from: 0.0.0.0 /0 Source: 137.132.50.14 224.2.127.1 129.0.0.0 /8 I P 4 0 0 0 Multimed Cloned from: 0.0.0.0 /0 Source: 129.79.17.70 224.2.127.254 128.0.0.0 /11 A F 4 42 122 6 SAPv1 An Cloned from: 0.0.0.0 /0 Source: 128.9.160.109 224.2.127.254 128.32.0.0 /11 A F 4 42 428 2 SAPv1 An Cloned from: 0.0.0.0 /0 Source: 128.32.131.169 |
| Entries in the multicast next -hop table | show multicast nexthops | user@host> show multicast nexthops brief ID Refcount KRefcount Downstream interface 11 2 1 local so-1/1/0.0 33 4 2 so-0/0/0.0 so-3/1/0.0 t3-4/2/0.0 ge-6/3/0.0 39 8 4 so-0/0/0.0 at-2/1/0.0 at-2/1/0.1 so-3/1/0.0 t3-4/2/0.0 ge-6/3/0.0 |
| Multicast reverse- path -forwarding calculations | show multicast rpf | user@host> show multicast rpf brief Source prefix Protocol RPF interface RPF neighbor 0.0.0.0 /0 DVMRP ipip.0 192.168.1.1 0.0.0.0 /2 Cloned ipip.0 192.168.1.1 0.0.0.0 /3 Cloned ipip.0 192.168.1.1 127.0.0.1 /32 Direct lo0.0 user@host> show multicast rpf detail Source prefix Protocol RPF interface RPF neighbor 0.0.0.0 /0 DVMRP ipip.0 192.168.1.1 0.0.0.0 /2 Cloned ipip.0 192.168.1.1 Cloned from: 0.0.0.0 /0 DVMRP ipip.0 192.168.1.1 0.0.0.0 /3 Cloned ipip.0 192.168.1.1 Cloned from: |
| Announced multicast sessions | show multicast sessions | user@host> show multicast sessions Bird test Colorado/UCSD Networks Class Colorado/UCSD wb LBL - Deb test LabWeb - The Spectro-Microscopy Collaboratory NASA - Shuttle Mission STS-95 NASA TV - Broadcast from NASA HQ NLANR Techs Conf. MPEG1 (IP/TV) SPT Meeting(private) Titanic Trailor UC Berkeley MIG seminar UW CS&E Colloquium test1@fsu-acns |
| Multicast statistics | show multicast statistics | user@host> show multicast statistics Interface Protocol Resolve Resolve Resolve Resolve primary secondary no route errors local 0 0 0 0 fxp0.0 PIM-dense 100 100 0 0 fxp1.0 PIM-dense 62 62 0 0 ipip.0 DVMRP 6309 6309 3 0 Interface Protocol Interface IfMismatch IfMismatch mismatches no route errors local 0 0 0 fxp0.0 PIM-dense 0 0 0 fxp1.0 PIM-dense 0 0 0 ipip.0 DVMRP 0 0 0 Resolve requests on interfaces not enabled for multicast 0 Interface Mismatches on interfaces not enabled for multicast 0 |
| Clear multicast statistics | clear multicast statistics | user@host> clear multicast statistics user@host> show multicast statistics user@host> |
| Most active multicast groups | show multicast usage | user@host> show multicast usage Group Sources Packets Bytes 224.225.1.1 1 1 0 224.225.1.2 1 1 0 224.225.1.3 1 1 0 224.225.1.4 1 1 0 224.225.1.5 1 1 0 Prefix /len Groups Packets Bytes 10.6.0.1 /32 489 489 0 10.255.245.35 /32 2 0 0 user@host> show multicast usage detail Group Sources Packets Bytes 224.225.1.1 1 1 0 Source: 10.6.0.1 /32 Packets: 1 Bytes: 0 224.225.1.2 1 1 0 Source: 10.6.0.1 /32 Packets: 1 Bytes: 0 224.225.1.3 1 1 0 Source: 10.6.0.1 /32 Packets: 1 Bytes: 0 224.225.1.4 1 1 0 Source: 10.6.0.1 /32 Packets: 1 Bytes: 0 224.225.1.5 1 1 0 Source: 10.6.0.1 /32 Packets: 1 Bytes: 0 |
| Trace information about a multicast path from a source to a receiver. | mtrace | user@host> mtrace 192.168.1.74 mtrace: WARNING: no multicast group specified, so no statistics printed Mtrace from 192.168.1.74 to 192.168.1.5 via group 0.0.0.0 Querying full reverse path... * * 0 router1.juniper.net (192.168.1.5) -1 router2.juniper.net (192.168.1.6) PIM thresh^ 1 -2 router3.juniper.net (192.168.1.69) PIM thresh^ 1 -3 router3.juniper.net (192.168.1.74) Round trip time 2 ms; total ttl of 2 required. |
