Setup guide

4-5
Cisco 6400 Software Setup Guide
OL-1183-04
Chapter4 Node Line Card Interface Configuration
ATM Interface Types
Verifying UNI Configuration
To verify UNI configuration for an ATM interface, use the show atm interface EXEC command:
Switch# show atm interface atm 3/0/0
Interface: ATM0/1/0 Port-type: oc3suni
IF Status: UP Admin Status: up
Auto-config: disabled AutoCfgState: not applicable
IF-Side: Network IF-type: UNI
Uni-type: private Uni-version: V3.0
...
Network-to-Network Interfaces
The Network-to-Network Interface (NNI) standard defines communication between two ATM switches
that are both located in a private network or are both located in a public network. The interface between
a public switch and private one is defined by the UNI standard.
Figure4-2 shows example NNIs configured between two central office (CO) Cisco 6400 systems.
Figure4-2 Private NNI Interface Example
Note You must configure private NNI connections between the ATM switches to allow for route discovery
and topology analysis between the switches.
Configuring NNIs
To manually configure an interface as an NNI, complete the following steps, beginning in global
configuration mode:
Command Purpose
Step1
Switch(config)# interface atm slot/subslot/port
Specifies an ATM interface and enters interface
configuration mode.
Step2
Switch(config-if)# no atm auto-configuration
Disables autoconfiguration on the interface.
Step3
Switch(config-if)# atm nni
Configures the ATM NNI.
Step4
Switch(config-if)# atm maxvpi-bits bits
(Optional) 0–8. Modifies the maximum VPI bits
configuration.
Step5
Switch(config-if)# atm maxvci-bits bits
(Optional) 0–14. Modifies the maximum VCI bits
configuration.