3Com CoreBuilder 2500 User Manual - page 152
11-8
C
HAPTER
11: A
DMINISTERING
IP M
ULTICAST
R
OUTING
Displaying the
Multicast Cache
The multicast cache contains the IP source address and destination
address for packets observed on the system. The multicast cache shows
how information is routed over interfaces and ports in your system.
To display all learned routes in the multicast cache:
1
From the top level of the Administration Console, enter:
ip multicast cacheDisplay
2
At the prompt, enter the multicast source address.
To display all multicast traffic, enter 255.255.255.0
.
3
At the prompt, enter the multicast group address.
To display all multicast traffic, enter 255.255.255.0
.
The DVMRP status and IGMP status appear on the screen.
Example:
Enter multicast source address [131.188.0.0]:
Enter multicast group address [244.2.0.1]:
DVMRP is enabled, IGMP snooping is enabled
This example shows a multicast cache configuration:
Top-Level Menu
system
ethernet
fddi
atm
bridge
➧
ip
ipx
appletalk
snmp
analyzer
script
logout
interface
route
arp
atmArpServer
➧
multicast
udpHelper
routing
icmpRouterDiscovery
rip
ping
statistics
dvmrp
igmp
interfaces
tunnel
routeDisplay
➧
cacheDisplay
Multicast Routing Cache Table (125 entries)
Origin Mcast-group CTmr Age PTmr In-If Out-Ifs
>202.242.133.128/26 224.2.0.1 7m 11m 6m T1P I1p
202.242.133.139 2 packets
>128.84.247/24 224.2.0.1 2m 36m 2m T1P I1p
128.84.247.53 43 packets
128.84.247.156 33 packets
>128.138.213/24 224.2.0.1 3m 2h 2m T1P I1p
128.138.213.1 23 packets
>128.206.212/24 224.2.0.1 92s 36m 60s T1P I1p
128.206.212.69 8 packets
>131.136.234/24 224.2.0.1 3m 57m 3m T1P I1p
131.136.234.103 12 packets
>138.39.25/24 224.2.0.1 103s 4h 71s T1P I1p
138.39.25.48 46 packets
>192.5.28/24 224.2.0.1 80s 2h 48s T1P I1p
192.5.28.43 178 packets
>199.94.220/24 224.2.0.1 104s 1h 72s T1P I1p
199.94.220.184 10 packets
>199.104.80/24 224.2.0.1 3m 32m 3m T1P I1p
199.104.80.5 4 packets