Virtual Trunks Across A Public Atm Cloud; Figure 25-3 Bxm Egress Virtual Interfaces And Qbins; Table - Cisco BPX-BXM-155-8DX Installation And Configuration Manual

How Virtual Trunking Works

Figure 25-3 BXM Egress VIrtual Interfaces and Qbins

Slot 4
AutoRoute connections use qbins 0 through 9.
Virtual Switch Interfaces (VSIs), which support master controllers use qbins 10 through 15, as
applicable. The BXM can concurrently support MPLS and AutoRoute, or PNNI and AutoRoute, or
MPLS and PNNI at the same time on a given VSI.

Virtual Trunks Across a Public ATM Cloud

An example of a number of virtual trunks configured across a Public ATM Network is shown in
Figure 25-4. There are three virtual trunks shown across the network, each with its own unique VPC.
The three virtual trunks shown in the network are:
•
•
•
Each VPC defines a virtual trunk that supports the traffic types shown in Table 25-2.
Cisco BPX 8600 Series Installation and Configuration
25-6
BXM
qbins
1
VI_1
16
qbins
1
VI_2
16
qbins
1
VI_3
16
qbins
1
VI_4
16
qbins
1
VI_31
16
between BPX_A 4.3.1 and IGX 10.2.1
between BPX_A 4.3.2 and BPX_B 5.1.1
between BPX_B 5.1.2 and IGX_A 10.2.3
Virtual trunk 4.1.1
Virtual trunk 4.1.2
Port 1
Virtual trunk 4.1.3
Port 2
Trunk 4.2
Port 3
Port 4
Port 5
Port 6
Port 7
Port 8
Release 9.3.0, Part Number 78-10674-01 Rev. D0, July 2001
Chapter 25 Configuring BXM Virtual Trunks