Cisco WS-C3550-12G Software Configuration Manual page 661

Chapter 24 Configuring IP Multicast Routing
Figure 24-15 Only Connected Unicast Routes Are Advertised by Default
151.16.0.0/16
172.34.15.0/24
202.13.3.0/24
176.32.10.0/24
176.32.15.0/24
Src Network
151.16.0/16
172.34.15.0/24
202.13.3.0/24
Beginning in privileged EXEC mode, follow these step to customize the summarization of DVMRP
routes if the default classful autosummarization does not suit your needs:
Note At least one more-specific route must be present in the unicast routing table before a configured
summary address is advertised.
Command
Step 1 configure terminal
Step 2
interface interface-id
Step 3
ip dvmrp summary-address address
mask [metric value]
Step 4
end
Step 5 show running-config
Step 6
copy running-config startup-config
To remove the summary address, use the no ip dvmrp summary-address address mask [metric value]
interface configuration command.
78-11194-03
DVMRP Report
m = 39
m = 42
m = 40
m = 1
m = 1
DVMRP Route Table
Intf Metric
Fa0/1 7
Fa0/1 10
Fa0/1 8
176.32.10.0/24
Purpose
Enter global configuration mode.
Enter interface configuration command, and specify the interface that is
connected to the DVMRP router.
Specify a DVMRP summary address.
•
•
Return to privileged EXEC mode.
Verify your entries.
(Optional) Save your entries in the configuration file.
Configuring Advanced DVMRP Interoperability Features
DVMRP router
Tunnel
Cisco
router
Dist
0
0
Fast
Fast
0
Ethernet
Ethernet
0/1
0/2
176.32.15.0/24
For summary-address address mask, specify the summary IP
address and mask that is advertised instead of the more specific
route.
(Optional) For metric value, specify the metric that is advertised
with the summary address. The default is 1. The range is 1 to 32.
Catalyst 3550 Multilayer Switch Software Configuration Guide
interface tunnel 0
ip unnumbered fa0/1
interface fastethernet 0/1
ip addr 176.32.10.1 255.255.255.0
ip pim dense-mode
interface fastethernet 0/2
ip addr 176.32.15.1 255.255.255.0
ip pim dense-mode
Unicast Routing Table (10,000 Routes)
Network Intf Metric
176.13.10.0/24 Fa0/1 10514432
176.32.15.0/24 Fa0/2 10512012
176.32.20.0/24 Fa0/2 45106372
Dist
90
90
90
24-55