Cisco Catalyst 3750-X User Manual

48-48
Catalyst 3750-X and 3560-X Switch Software Configuration Guide
OL-21521-01
Chapter 48 Configuring IP Multicast Routing
Configuring Optional Multicast Routing Features
Figure 48-7 Administratively-Scoped Boundaries
You can define an administratively-scoped boundary on a routed interface for multicast group addresses.
A standard access list defines the range of addresses affected. When a boundary is defined, no multicast
data packets are allowed to flow across the boundary from either direction. The boundary allows the
same multicast group address to be reused in different administrative domains.
The IANA has designated the multicast address range 239.0.0.0 to 239.255.255.255 as the
admi
nistratively-scoped addresses. This range of addresses can then be reused in domains administered
by different organizations. The addresses would be considered local, not globally unique.
Beginning in privileged EXEC mode, follow these steps t
o set up an administratively-scoped boundary.
This procedure is optional.
45154
Company XYZ
Engineering
Marketing
239.128.0.0/16
239.0.0.0/8
Command Purpose
Step 1
configure terminal Enter global configuration mode.
Step 2
access-list access-list-number {deny |
permit} source [source-wildcard]
Create a standard access list, repeating the command as many times as
necessary.
• For access-list-number, the range is 1 to 99.
• The deny keyword denies access if the conditions are matched. The
permit keyword permits access if the conditions are matched.
• For source, enter the number of the network or host from which the
packet is being sent.
• (Optional) For source-wildcard, enter the wildcard bits in dotted
decimal notation to be applied to the source. Place ones in the bit
positions that you want to ignore.
Recall that the access list is always termi
nated by an implicit deny
statement for everything.
Step 3
interface interface-id Specify the interface to be configured, and enter interface configuration
mode.
Step 4
ip multicast boundary
access-list-number
Configure the boundary, specifying the access list you created in Step 2.
Step 5
end Return to privileged EXEC mode.
Step 6
show running-config Verify your entries.
Step 7
copy running-config startup-config (Optional) Save your entries in the configuration file.

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