10-7
Bridging—Transmitting Non-IP Traffic or Merging Two Networks
Configuring Bridging
If you want to configure bridging between more than one switch, remember
to assign both Ethernet interfaces to the bridge group. If the router is acting
as a remote bridge to more than one remote site (for example, the headquar-
ters router in the Frame Relay network shown in Figure 10-2), you should
assign all WAN interfaces to the bridge.
You can also assign only WAN interfaces to a bridge, although you probably
would not use this application. In this case, the router would simply act as a
corridor between remote sites.
To assign an interface to a bridge group:
1. Move to the logical interface configuration mode context:
ProCurve(config)# int ppp 1
2. Assign the interface to the bridge group:
Syntax: bridge-group <group number>
For example:
ProCurve(config-ppp 1)# bridge-group 1
Note Only one interface in the bridge group should have an IP address. You should
remove all IP addresses from other interfaces before configuring the bridge.
Note Remember that every host in a bridged network must be on the same subnet.
If you want to bridge traffic between hosts on multiple subnets, you can
change the subnet mask so that all hosts are on the same subnet. You could
also enable a different bridge group on interfaces connecting to different
subnet. However, in the second case these subnets will not communicate
between each other unless a different device supports routing between the
subnets.
Disabling IP Routing
The router cannot both route and bridge IP traffic. You must disable IP routing
when the router acts as a remote bridge to join two sites using addresses on
the same IP network.
Enter the following command to disable IP routing:
ProCurve(config)# no ip routing
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