Specifications

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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
General AXSM Configuration Procedures
• EVNNI (Enhanced Virtual Network-to-Network Interface) – You can specify a range of VPIs for
one interface, and this range of VPIs represents the virtual NNI trunk.
Line ports correspond to line connectors on the switch back cards. Each line can support UNI, NNI,
VNNI, VUNI, EVNNI, or EVUNI ports. Bringing up a line establishes minimal connectivity between
two nodes. When you add an ATM port to a line, you enable ATM communications over the line.
These differing types of line ports are explained in more detail in the “Logical Ports” section on
page 1-6. Figure 3-3 shows the relationship between cards, bays, lines, and logical interface numbers.
Figure 3-3 Relationship between Cards, Bays, Lines, and Logical Interface Numbers
You must configure one ATM port for each line or trunk to enable ATM communications over that link.
You define the port type (UNI, NNI, VNNI, VUNI, EVNNI, or EVUNI) when you add the ATM port to
the line or trunk.
Note For information on adding ports on a channelized path on an AXSM-XG, see the “Adding ATM Ports”
section on page 3-27.
To add an ATM port to a line, use the following procedure.
Step 1 Establish a configuration session using a user name with GROUP1 privileges or higher.
Step 2 Obtain the line number on which you will add the port, and verify that the line/path and port number that
you want to use is not already configured. To display a list of the lines and line numbers, enter the dsplns
command:
M8950_DC.5.AXSM.a > dsplns
Tip Remember that you cannot configure a line until you have brought it up as described in the Cisco
MGX 8800/8900 Series Configuration Guide, Release 5.2.
93170
Front card
Physical
cards
Back card
bay 1
Line 1 Line 2 Line 2
Port 10 Port 60 Port 15
Back card
bay 2
Port 11
Line 1
Port 2
Physical
lines
Interfaces
(logical
ports)