Cisco Catalyst 3750-E User Manual

46-30
Catalyst 3750-E and 3560-E Switch Software Configuration Guide
OL-9775-08
Chapter 46 Configuring IP Multicast Routing
Configuring IP Multicast Routing
• Configuring Candidate RPs, page 46-32 (optional)
For overview information, see the “Bo
otstrap Router” section on page 46-7.
Defining the PIM Domain Border
As IP multicast becomes more widespread, the chance of one PIMv2 domain bordering another PIMv2
domain is increasing. Because these two domains probably do not share the same set of RPs, BSR,
candidate RPs, and candidate BSRs, you need to constrain PIMv2 BSR messages from flowing into or
out of the domain. Allowing these messages to leak across the domain borders could adversely affect the
normal BSR election mechanism and elect a single BSR across all bordering domains and co-mingle
candidate RP advertisements, resulting in the election of RPs in the wrong domain.
Beginning in privileged EXEC mode, follow these steps to define the PIM domain border. This
p
rocedure is optional.
To remove the PIM border, use the no ip
pim bsr-border interface configuration command.
Figure 46-5 Constraining PIMv2 BSR Messages
Command Purpose
Step 1
configure terminal Enter global configuration mode.
Step 2
interface interface-id Specify the interface to be configured, and enter interface configuration
mode.
Step 3
ip pim bsr-border Define a PIM bootstrap message boundary for the PIM domain.
Enter this command on each interface that connects to other bordering
PI
M domains. This command instructs the switch to neither send or
receive PIMv2 BSR messages on this interface as shown in Figure 46-5.
Step 4
end Return to privileged EXEC mode.
Step 5
show running-config Verify your entries.
Step 6
copy running-config startup-config (Optional) Save your entries in the configuration file.
101243
PIMv2 sparse-mode
network
BSR
BSR
messages
Neighboring
PIMv2 domain
Neighboring
PIMv2 domain
Configure the
ip pim bsr-border
command on
this interface.
Configure the
ip pim bsr-border
command on
this interface.
BSR
messages
Layer 3
switch
Layer 3
switch

Cisco Catalyst 3750-E Specifications

General

Series	Catalyst 3750-E
Switching Capacity	32 Gbps
Stacking Bandwidth	32 Gbps
StackWise Plus	Yes
Layer Support	Layer 3
MAC Address Table Size	12, 000 entries
RAM	256 MB
Flash Memory	64 MB
Memory	256 MB DRAM, 64 MB Flash
Operating Temperature	32 to 113°F (0 to 45°C)
Ports	48 10/100/1000 Ethernet ports
Form Factor	Rack-mountable
Jumbo Frame Support	Yes
Input Voltage	100 to 240 VAC
Storage Temperature	-25 to 70 °C
Relative Humidity	10 to 90% non-condensing