Cisco ONS 15454 - Additional Configurations; Setting the MTU Size

4-14
Cisco ONS 15454 SONET/SDH ML-Series Multilayer Ethernet Card Software Feature and Configuration Guide, R4.0
78-15224-02
Chapter 4 Configuring Interfaces
Configuring the ML-Series POS Interfaces
Buffer : Unstable
Remote hostname :
Remote interface:
Remote IP addr :
B3 BER thresholds:
SFBER = 1e-5, SDBER = 1e-7
1107 total input packets, 11267259 post-HDLC bytes
0 input short packets, 11267427 pre-HDLC bytes
0 input long packets , 0 input runt packets
1 input CRCerror packets , 0 input drop packets
0 input abort packets
945 input packets dropped by ucode
0 total output packets, 0 output pre-HDLC bytes
0 output post-HDLC bytes
Carrier delay is 200 msec
Additional Configurations
To configure additional properties to match those of the interface at the far end, perform the following
steps, beginning in global configuration mode:
Setting the MTU Size
To set the maximum transmission unit (MTU), perform the following steps, beginning in global
configuration mode:
Command Purpose
Step 1
Router(config-if)# no keepalive
Turns off keep alive messages. Keep alive messages, though
not required, are recommended.
Step 2
Router(config-if)# crc {16 | 32}
Sets the CRC value. If the device to which the POS module is
connected does not support the default CRC value of 32, set
both devices to use a value of 16.
Command Purpose
Step 1
Router(config)# interface pos
number
Enters interface configuration mode and specifies the POS
interface to configure.
Step 2
Router(config-if)# mtu bytes
Configures the MTU size up to a maximum of 9000 bytes. See
Table 4-3 on page 4-15.