Cisco Catalyst 3750-X User Manual

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Catalyst 3750-X and 3560-X Switch Software Configuration Guide
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Chapter 48 Configuring IP Multicast Routing
Configuring Basic DVMRP Interoperability Features
This example shows how to configure DVMRP interoperability when the PIM device and the DVMRP
router are on the same network segment. In this example, access list 1 advertises the networks
(198.92.35.0, 198.92.36.0, 198.92.37.0, 131.108.0.0, and 150.136.0.0) to the DVMRP router, and access
list 2 prevents all other networks from being advertised (ip dvmrp metric 0 interface configuration
command).
Switch(config-if)# interface gigabitethernet1/0/1
Switch(config-if)# ip address 131.
119.244.244 255.255.255.0
Switch(config-if)# ip pim dense-mo
de
Switch(config-if)# ip dvmrp metric
1 list 1
Switch(config-if)# ip dvmrp metric
0 list 2
Switch(config-if)# exit
Switch(config)# access-list 1 perm
it 198.92.35.0 0.0.0.255
Switch(config)# access-list 1 perm
it 198.92.36.0 0.0.0.255
Switch(config)# access-list 1 perm
it 198.92.37.0 0.0.0.255
Switch(config)# access-list 1 perm
it 131.108.0.0 0.0.255.255
Switch(config)# access-list 1 perm
it 150.136.0.0 0.0.255.255
Switch(config)# access-list 1 deny
0.0.0.0 255.255.255.255
Switch(config)# access-list 2 perm
it 0.0.0.0 255.255.255.255
Configuring a DVMRP Tunnel
The software supports DVMRP tunnels to the MBONE. You can configure a DVMRP tunnel on a router
or multilayer switch if the other end is running DVMRP. The software then sends and receives multicast
packets through the tunnel. This strategy enables a PIM domain to connect to the DVMRP router when
all routers on the path do not support multicast routing. You cannot configure a DVMRP tunnel between
two routers.
When a Cisco router or multilayer switch runs DVMRP th
rough a tunnel, it advertises sources in
DVMRP report messages, much as it does on real networks. The software also caches DVMRP report
messages it receives and uses them in its RPF calculation. This behavior enables the software to forward
multicast packets received through the tunnel.
When you configure a DVMRP tunnel, you should assign an IP address to a tunnel in the
se cases:
• To send IP packets through the tunnel
• To configure the software to perform DVMRP summarization
The software does not advertise subnets through the tunnel if the tunnel has a different network number
fr
om the subnet. In this case, the software advertises only the network number through the tunnel.

Cisco Catalyst 3750-X Specifications

General

Switching Capacity	160 Gbps
Stacking Bandwidth	64 Gbps
Max Stacking Units	9
Layer Support	Layer 2 and Layer 3
Form Factor	Rack-mountable
DRAM	256 MB
Flash Memory	64 MB
Model	Cisco Catalyst 3750-X Series
Ports	24 or 48 10/100/1000 Ethernet ports
Uplink Interfaces	4 SFP or 2 SFP+
Features	StackWise Plus, EnergyWise
Image	IP Base or IP Services
Operating Temperature	0 to 40°C
Operating Humidity	10 to 85% noncondensing