observe-port dynamic-allocation enable
Function
The observe-port dynamic-allocation enable command enables the function of dynamically applying for observing port resources.
The undo observe-port dynamic-allocation enable command restores the default configuration.
By default, the function is disabled.
This command is supported only on the S5735-L, S5735S-L, S5735S-L-M, S5735-S, S5735-S-I, and S5735S-S.
Format
observe-port observe-port-index dynamic-allocation enable
undo observe-port observe-port-index dynamic-allocation enable
Parameters
| Parameter | Description | Value |
|---|---|---|
observe-port-index |
Specifies the index of an observing port. |
The value is an integer in the range from 2 to 4. The observing port with index 1 does not support the function of dynamically applying for observing port resources. |
Usage Guidelines
Usage Scenario
For the S5735-L, S5735S-L, S5735S-L-M, S5735-S, S5735-S-I, and S5735S-S, when the same observing port is configured for outbound mirroring and inbound mirroring and multiple mirrored ports reside on the same switch, only one copy of the same packets is mirrored to the observing port. To resolve this problem, run the observe-port dynamic-allocation enable command to enable the observing port to dynamically apply for hardware resources.
Precautions
- In a stack, you can also configure the mirrored ports and observing port on different member switches to prevent this problem, without the need of running this command.
- You need to run this command before running the observe-port [ observe-port-index ] interface command to create an observing port.
- After the observe-port dynamic-allocation enable command is configured, observing port resources are occupied only when the port-mirroring to observe-port command is configured on mirrored ports. If both inbound mirroring and outbound mirroring are configured on a mirrored port, one observing port resource is occupied for each direction.