Switch User Manual

Port Mirroring
SecureStack C3 Configuration Guide 7-37
•Onswitchesonthepathfromthesourceporttotheremotedestination,egresstagginghasto
beenabledonpotentialegressportsforthemirrorVLAN.
Withtheintroductionofremoteportmirroring:
• ConfiguredmirrordestinationportswillNOTlosetheirswitchingorroutingpropertiesas
theydoonSecureStack
A2,B2,orC2products.
•OnswitcheswherethemirrorVLANhasbeenconfigured,anytrafficonthatVLANwillbe
floodedontheVLAN.Itwillneverbeunicast,evenifthesourceaddressofthetrafficasbeen
learnedontheswitch.
Configuring SMON MIB Port Mirroring
Overview
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creat e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:
C3(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follow ingexample:
C3(su)->show port mirroring
Note: In order to configure a port mirroring relationship, both source and destination interfaces must
be enabled and operational (up).