Setup guide

3-11
Cisco 6400 Software Setup Guide
OL-1183-04
Chapter3 Basic NRP Configuration
NRP-2 and NRP-2SV Configuration
Password:
NSP>
NSP> nrps6
Trying 10.6.0.2 ... Open
NRP-2>
To close the Telnet session to the NRP-2 and return to the NSP prompt, use the exit command.
NRP-2> exit
[Connection to 10.6.0.2 closed by foreign host]
NSP>
Matching the MTU Size of the NRP-2 and Its Network Neighbors
The NRP-2 ATM interface to the backplane supports a maximum packet size, or maximum transmission
unit (MTU), of 1900 bytes. The ATM interface drops any incoming packet larger than 1900 bytes. To
prevent packets from being dropped, make sure that the MTU sizes match for both ends of virtual
connections.
Displaying the MTU for the Main ATM Interface
To check the current MTU size on the NRP-2 ATM main interface, use the show interface atm 0/0/0
EXEC command, which displays the following fields:
• MTU—Largest MTU setting among all subinterfaces and the main ATM interface
• sub MTU—MTU setting on the main ATM interface
Example—Main ATM Interface
NRP-2# show interface atm 0/0/0
...
MTU 1870 bytes, sub MTU 1850, BW 599040 Kbit, DLY 60 usec,
...
Displaying the MTU for a Subinterface
To display the current MTU size on the NRP-2 ATM subinterface, use the
showinterfaceatm0/0/0.subinterface EXEC command. This command displays only one MTU field
that represents the MTU setting for the subinterface.
Example—ATM Subinterface
NRP-2# show interface atm 0/0/0.100
...
MTU 1870 bytes, BW 599040 Kbit, DLY 60 usec,
...
Displaying the MTU for a Network Neighbor
To check the current MTU size on the network neighbor, use the show interface atm EXEC command
for the interface used to terminate the virtual connection from the NRP-2.