Carrier Access BROADway System 770-0125-AB, Installation Manual

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BROADway - Release 4.00 3-5
Configuration
Assigning an IP Address to the BROADway System
Creating a Bridge Virtual Interface (BVI)
Before you can add an interface to a bridge group, you should first create the bridge virtual interface
(BVI) which attaches the bridge-group to the IP router. There is a one-to-one mapping between a
BVI and a bridge-group; each BVI supports a single bridge-group. The BVI has an IP address which
it utilizes to route its bridged traffic into the IP router and which can also be used to manage the
BROAD way system by performing the
manage-intf enable
command on the BVI.
You can enable and configure both Network Address Translation (NAT) and the DHCP relay agent
on a BVI interface.
To create a BVI, use the following PS commands:
PS# configure
PS(NSP-config)# interface bvi
<bvi number>
PS(NSP-config-bvi)# ip address
<address> <mask>
<bvi number>
—The number of the bridge virtual interface. You should use the same number
that was configured for the bridge group.
<address>
—The IP address of the interface.
<mask>
—The network mask for the interface.
NOTE:
You must create a bridge group before creating the BVI.
For example, to create a bridge group, map the Ethernet interface to the bridge group, associate the
bridge group with a BVI, assign an IP address to the BVI and enable the BVI IP address as a
management interface for the system:
NSP1> ps
PS# configure
PS(NSP-config)# bridge addgroup 1
PS(NSP-config)# interface ethernet 0
PS(NSP-config-if)# bridge-group 1
PS(NSP-config-if)# exit
PS(NSP-config)# interface bvi 1
PS(NSP-config-bvi)# ip address 192.9.200.1 255.255.255.0
PS(NSP-config-bvi)# manage-intf enable
To delete a BVI use the following PS commands:
PS# configure
PS(NSP-config)# no interface bvi 1
To change the state of the BVI to “down”, use the following PS commands:
PS# configure
PS(NSP-config)# interface bvi 1
PS(NSP-config-bvi)# shutdown