Cisco ASR 1000 Configuration Guide

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Cisco ASR 1000 Series Aggregation Services Routers SIP and SPA Software Configuration Guide
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Chapter 7 Configuring the ATM SPAs
Configuration Tasks
Configuring a PVC on a Multipoint Subinterface
Creating a multipoint subinterface allows you to create a point-to-multipoint PVC that can be used as a
broadcast PVC for all multicast requests. To create a PVC on a multipoint subinterface, use the following
procedure beginning in global configuration mode:
Command or Action Purpose
Step 1
Router(config)# interface atm
slot/subslot/port.subinterface multipoint
Creates the specified point-to-multipoint subinterface on
the given port on the specified ATM SPA, and enters
subinterface configuration mode, where:
• slot—Specifies the chassis slot number in the Cisco
ASR 1000 Series Router where the SIP is installed.
• subslot—Specifies the secondary slot of the SIP
where the SPA is installed.
• port—Specifies the number of the individual
interface port on a SPA.
• subinterface—Specifies the number of the
subinterface.
Step 2
Router(config-subif)# ip address address mask Assigns the specified IP address and subnet mask to this
subinterface.
Step 3
Router(config-subif)# no ip directed-broadcast (Optional) Disables the forwarding of IP directed
broadcasts, which are sometimes used in denial of
service (DOS) attacks.
Step 4
Router(config-subif)# pvc [name] vpi/vci Configures a new ATM PVC by assigning its VPI/VCI
numbers and enters ATM VC configuration mode. The
valid values for vpi/vci are:
• name—(Optional) An arbitrary string that identifies
this PVC.
• vpi—Specifies the VPI ID. The valid range is 0 to
255.
• vci—Specifies the VCI ID. The valid range is 32 to
65535. Values 1 to 31 are reserved and should not be
used, except for 5 for the QSAAL PVC and 16 for
the ILMI PVC. ILMI is unsupported on the Cisco
ASR 1000 Series Routers.
Note When using the pvc command, remember that the vpi/vci combination forms a unique identifier for the
interface and all of its subinterfaces. If you specify a vpi/vci combination that has been used on another
subinterface, the Cisco
IOS XE software assumes that you want to modify that PVC’s configuration and
automatically switches to its parent subinterface.

Cisco ASR 1000 Specifications

General

Brand	Cisco
Model	ASR 1000
Category	Network Router
Language	English