Configuration manual

Port Mirroring
Fixed Switch Configuration Guide 8-15
Configuring SMON MIB Port Mirroring
SMON port mirroring support allows you to redirect traffic on ports remotely using SMON MIBs.
This is useful for troubleshooting or problem solving when network management through the
console port, telnet, or SSH is not feasible.
Procedures
Perform the following steps to configure and monitor port mirroring using SMON MIB objects.
To create and enable a port mirroring instance:
1. Open a MIB browser, such as Netsight MIB Tools
2. In the MIB directory tree, navigate to the portCopyEntry folder and expand it.
3. Select the portCopyStatus MIB.
4. Enter a desired source and target port in the Instance field using the format source.target.
For example, 3.2 would create a relationship where source port ge.1.3 would be mirrored to
target port ge.1.2.
5. Enter MIB option 4 (createAndGo) and perform an SNMP Set operation.
6. (Optional) Use the CLI to verify the port mirroring instance has been created and enabled as
shown in the following example:
C5(su)->show port mirroring
Port Mirroring
==============
Source Port = ge.1.3
Target Port = ge.1.2
Frames Mirrored = Rx and Tx
Port Mirroring status enabled
To create a port mirroring instance without automatically enabling it:
1. Complete steps 1-4 above.
2. Enter MIB option 5 (createAndWait) and perform an SNMP Set operation.
3. (Optional) Use the CLI to verify the port mirroring instance has been created set to disabled
mode as shown in the following example:
C5(su)->show port mirroring
Port Mirroring
==============
Source Port = ge.1.3
Target Port = ge.1.2
Frames Mirrored = Rx and Tx
Port Mirroring status disabled
4. When you are ready to enable this instance, enter MIB option 1 (active) and perform an SNMP
Set operation.
5. (Optional) Use the CLI to verify the port mirroring instance has been enabled.
To delete a port mirroring instance:
1. Select a previously created port mirroring instance in your MIB browser.
Note: In order to configure a port mirroring relationship, both source and destination interfaces must
be enabled and operational (up).