Adding Virtual Trunks Using Bni Cards; Figure 25-6 Addition Of Virtual Trunks Across A Public Atm Network - Cisco BPX-BXM-155-8DX Installation And Configuration Manual

Example: Virtual Trunk Across an ATM Network
•
•
Use the addtrk command to check for matching values before allowing the trunk to be added to the
network topology.
The network topology as seen from a dsptrks command at BPX_A would be:
BPX_A 4.3.1-10.2.1/IGX_A
BPX_A 4.3.2-5.1.1/BPX_B

Figure 25-6 Addition of Virtual Trunks Across a Public ATM Network

BPX_A

Adding Virtual Trunks Using BNI Cards

This section is a general procedure for setting up a virtual trunk.
Virtual trunking is an optional feature that must be enabled by Cisco prior to adding virtual trunks. Also,
revision levels of BNI firmware must be current.
This procedure assumes that Cisco equipment is used in the ATM Cloud as well as in the Cisco WAN
Switching subnetworks. In this case, a BNI output from the subnetwork is connected to a UNI input at
the ATM Cloud (see Figure 25-7).
In the ATM cloud network, physically connect a port at the cloud edge to each BNI port in the Cisco
Step 1
WAN Switching Network that is intended to have virtual trunks.
Cisco BPX 8600 Series Installation and Configuration
25-18
traffic classes supported
the number of connection channels supported
BXM 4
4.3
ATM-UNI
4.3.2
Public ATM network
VPCs within the cloud,
one for each virtual trunk
(Virtual trunks can be
type CBR, VBR, or ABR)
10.2.1
4.3.1
10.2.3
5.1.1
Release 9.3.0, Part Number 78-10674-01 Rev. D0, July 2001
Chapter 25 Configuring BXM Virtual Trunks
IGX 10
10.2
ATM-UNI
5.1.2
5.1
BXM 5
IGX_A
BPX_B