C613-50631-01 Rev A Command Reference for IE340 Series 2117
AlliedWare Plus™ Operating System - Version 5.5.3-0.x
QOS COMMANDS
EGRESS
-RATE-LIMIT OVERHEAD
egress-rate-limit overhead
Overview Use this command to allow for the size of packet preamble and inter-packet gap
(the “overhead”) in egress queue rate limiting on switch ports.
Doing this keeps the rate limit at the same percentage of line rate for all packet
sizes. Otherwise, the percentage of line rate changes with packet size, because of
the size of the overhead relative to smaller packets. This means smaller packets
take up a larger percentage of the line rate.
Use the no variant of this command to turn off the overhead allowance.
Syntax
egress-rate-limit overhead <bytes>
no egress-rate-limit overhead
Default No overhead allowance
Mode Interface Configuration
Example To configure an overhead allowance of 20 bytes (8 bytes of preamble and a
inter-packet gap of 12 bytes) on port1.0.1, use the commands:
awplus# configure terminal
awplus(config)# interface port1.0.1
awplus(config-if)# egress-rate-limit overhead 20
To return port1.0.1 to the default of no overhead allowance, use the commands:
awplus# configure terminal
awplus(config)# interface port1.0.1
awplus(config-if)# no egress-rate-limit overhead
Related
commands
egress-rate-limit
Command
changes
Version 5.4.9-2.1: command added
Parameter Description
<bytes> The number of bytes to allow for overhead. For standard ethernet
packets, use a value of 20 bytes (8 bytes of preamble and a
inter-packet gap of 12 bytes).
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