Specifications

3-10
Cisco ATM Services (AXSM) Configuration Guide and Command Reference for MGX Switches
Release 5.2, Part Number OL-6484-01 Rev. C0, September 2005
Chapter 3 Provisioning ATM Services
Quickstart Provisioning Procedures
To set up a virtual trunk, as shown in Figure 3-1, the following tasks have to be completed:
• Virtual trunks must be defined between the private network nodes and the core edge nodes.
• The core network operators must define an SPVP for each virtual trunk that connects the core edge
nodes on the virtual trunk path.
The Cisco MGX 8850 (PXM45) and Cisco MGX 8950 support:
• Up to 256 SPVPs across an ATM core network (or ATM cloud). The range is from 0 to 255.
• Up to 60 virtual trunks on a physical interface with a total of 60 per AXSM card and 100 ports per
switch.
Note As shown in Figure 3-1, single trunk between Private Switch A and Edge Switch A hosts two virtual
trunks, which terminate at Virtual Network-to-Network Interface (VNNI) ports 10:1.2:2 and 10:1.2:7.
The switch supports up to 256 VNNI ports on a UNI link and up to 4096 VNNI ports on an NNI link.
Figure 3-1 Virtual Trunk Configuration
The following procedure summarizes the tasks required to configure virtual trunks on AXSM cards.
VNNI
port 10:1.2:2
VNNI
port 10:1.2:7
Core ATM
network
SPVP
SPVP
Edge
switch 1
VPI 12
Legend
Physical line
VPI 10
Private
switch A
Edge
switch 2
Edge
switch 3
port 6:2.1:12
port 6:2.1:43
Private
switch B
port 59
VNNI
port50
Private
switch C
VNNI
port 36
port 3
VPI 10
VPI 12
Virtual trunk 46507
Command Comments
Step 1
usernam e
< passw ord>
Start a configuration session.
To perform all of the steps in this quickstart procedure, you must
log in as a user with Group1 privileges or higher.
Step 2
cc Change to the AXSM card.