Cisco Catalyst 2950 Command Reference Manual page 237

Chapter 2 Catalyst 2950 and 2955 Cisco IOS Commands
For more information about link stability and margins, see the software configuration guide for this
release.
Examples
This example shows how to specify a margin of 2 dB for both upstream and downstream. If the SNR is
2 dB above the theoretical minimum for the chosen profile when the link is established, the link is
classified as down and the next profile in the sequence is attempted.
Switch(config-if)# margin upstream 2 downstream 2
This example shows show to specify a margin of 1 dB for downstream:
Switch(config-if)# margin downstream 1
Related Commands Command
lre rate selection sequence
rate selection
rate selection sequence
OL-10102-01
Description
Assigns a rate selection sequence for the entire switch.
Enables rate selection on a specific port.
Assigns a rate selection sequence for a specific port.
Catalyst 2950 and Catalyst 2955 Switch Command Reference
margin
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