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crc
Sets the number of bits in the CRC (also known as the frame check sequence) at 16 or 32 for Packet Over SONET/SDH interfaces.
Syntax: crc fcs-value
no crc
fcs-value
Size of the frame check sequence. Valid values are 16 or 32.
Description: The cyclical redundancy check (CRC) is a calculation used to check for transmission errors. By default, the number of bits in a CRC is 32. A CRC of 32 provides better error detection, but increases overhead.
Use the crc command to set the length of the CRC at either 16 or 32.
Use the no crc command to set the length of the CRC at the default (32).
Factory Default: 32.
Command Mode: Interface configuration for POS.
Example 1: In the following example, the crc command sets the CRC to 16, and the show interface pos command displays the new setting:
router(config)#interface pos 1/1/1
router(config-if)#crc 16
router(config-if)#end
router#show interface pos 1/1/1
POS 1/1/1 interface status is up, line protocol is up
Internet address is 201.1.1.10/24
MTU 4470 bytes
Payload BW: 601 Mbit/Sec, Total BW: 622 Mbit/Sec
Encapsulation PPP, CRC-16
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Example 2: In the following example, the no crc command resets the CRC to the default value of 32, and the show interface pos command displays the new setting:
router(config)#interface pos 1/1/1
router(config-if)#no crc
router(config-if)#end
router#show interface pos 1/1/1
POS 1/1/1 interface status is up, line protocol is up
Internet address is 201.1.1.10/24
MTU 4470 bytes
Payload BW: 601 Mbit/Sec, Total BW: 622 Mbit/Sec
Encapsulation PPP, CRC-32
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Related Commands: default crc
show interface pos
show running-config
show startup-config
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Copyright © 2005
Avici Systems Inc.
Avici® and TSR®
is a registered trademark of Avici Systems Inc.
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Source
File Name: Interface_Cmd.fm
HTML File Name: Interface_Cmd6.html
Last Updated: 02/25/05 at 14:28:34