Network Router User Manual

Nortel Secure Router 8000 Series
Configuration -WAN Access 10 Low-speed ATM configuration
Issue 5.3 (
30 March 2009) Nortel Networks Inc. 10-11
The ATM interface view appears.
Step 3 Run:
frame-format { sdh | sonet }
The command configures the frame format.
ATM interface uses SDH frame format when the optical interface is STM-1 . The ATM
interface uses SONET frame format when the interface is OC-3 or . By default, SDH frame
format is used.
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Configuring the MTU
Change the MTU of the interface by using the mtu command. You need to first run the
shutdown command to disable the interface and then run the undo shutdown command to
restart the interface to validate the MTU.
Do as follows on the routers:
Step 1 Run:
system-view
The system view appears.
Step 2 Run:
interface atm interface-number
The ATM interface view appears.
Step 3 Run:
mtu mtu
The command configures the MTU of the interface
The MTU ranges from 328 to 2000 in byte. The default value is 1500.
You use the MTU of the ATM interface for the assembly and fragmentation of IP packet in
receiving and sending packets on the interface.
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Configuring the scrambling
Do as follows on the routers:
Step 1 Run:
system-view