Cisco Catalyst 4500 Series Software Configuration Guide

39-2
Catalyst 4500 Series Switch, Cisco IOS Software Configuration Guide - Cisco IOS XE 3.9.xE and IOS 15.2(5)Ex
Chapter 39 Configuring ANCP Client
Enabling and Configuring ANCP Client
The ANCP protocol must be able to identify the port on which multicast must be added. (This port can
be identified either using the identifier configured on the CLI or with the DHCP option 82 that was
inserted by the Catalyst 4500 switch while the subscriber received an IP address with DHCP. Either way,
you should be consistent in identifying a given port.
Enabling and Configuring ANCP Client
Note If you intend to use DHCP option 82 rather than CLI mapping (with the ancp client port identif...
command) you must enter the ip dhcp snooping command before configuring the ANCP client.
You can identify a port with the ancp mode client command or with DHCP option 82.
This section includes these topics:
• Identifying a Port with the ANCP Protocol, page 39-2
• Identifying a Port with DHCP Option 82, page 39-4
Identifying a Port with the ANCP Protocol
To make the Catalyst 4500 series switch operate as an ANCP client and to build and initialize its relevant
data, enter the ancp mode client command. The no version of this command disables ANCP. This
command disconnects the ANCP client from the ANCP server and terminates any existing multicast
streams that have been enabled with ANCP.
To configure a switch to communicate with a single ANCP server, use the [no] ancp client server
interface command. This command directs the ANCP client to initiate a TCP connection to the remote
ANCP server identified with the IP address. If the TCP connection fails, the connection times out and
retries for the connection every 120 seconds until it succeeds. The interface command specifies the
interface from which the local ANCP client obtains its IP address.The no command terminates the TCP
connection to the ANCP server but retains any existing ANCP activated multicast stream.
Separate commands enable the ANCP client and configure the IP address of the ANCP server. You can
reconfigure the IP address of the remote ANCP server without losing existing ANCP activated multicast
streams.
To identify a port with the ANCP protocol, follow these steps:
Step 1 Enable ANCP as follows:
Switch(config)> ancp mode client
Step 2 Configure the IP address of the remote server as the interface to acquire the source IP address:
Switch(config)> ancp client server ipaddress of server interface interface
The interface might be a loopback; this allows the client to reach the server using the interface.
Step 3 (Optional) Enable the ANCP multicast client to identify this VLAN interface using the port-identifier as
opposed to the Option 82 circuit-id:
Switch(config)> ancp client port identifier [port-identifier] vlan [number] interface
[interface]

Cisco Catalyst 4500 Series Specifications

General

Series	Catalyst 4500 Series
Category	Switch
Layer Support	Layer 2, Layer 3
Form Factor	Modular chassis
Stackable	No
Chassis Slots	3, 6, 7, 10
Power Supply Options	AC, DC
Redundancy	Power supply, Supervisor engine
Network Management	Cisco IOS Software CLI, SNMP, Cisco Prime Infrastructure
Features	Security, QoS
Port Density	Up to 384 ports per chassis
Security Features	802.1X, ACLs, DHCP Snooping, Dynamic ARP Inspection, IP Source Guard
Supervisor Engine	8-E