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JUNOSe 11.1.x Physical Layer Configuration Guide
Configuring an HDLC Channel
You must configure an HDLC channel for each group of fractional T1 lines and each
full T1 line.
To configure an HDLC channel, specify a serial interface (for example, HDLC channel
in slot 0, port 1, channel 1, subchannel 5).
Optional Tasks
The following configuration tasks are optional when you configure an HDLC channel
on a channelized T3 interface:
crc
idle-character
20
Configuration Tasks
host1(config)#interface serial 0/1:1/5
Configure the CRC.
Specify the HDLC idle character.
Enable data inversion on the interface.
Set the time interval for monitoring bit and packet rates.
Set the MRU.
Set the MTU.
Assign a text description or an alias to the serial interface.
Use to configure the size of the CRC.
The CRC is an error-checking technique that uses a calculated numeric value to
detect errors in transmitted data.
16 and 32 indicate the number of bits per frame that are used to calculate the
frame check sequence (FCS). Both the sender and receiver must use the same
setting.
Use a 32-bit CRC when transmitting long streams at fast rates and to provide
better ongoing error detection.
Example
host1(config-if)#crc 32
Use the no version to restore the default value, 16.
See crc.
Use to configure the HDLC idle character.
The idle character is sent between HDLC packets.
Specify one of the following idle characters:
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