Concept Guide
MAC Synchronization for VLT Nodes in a PVLAN.............................................................................................. 954
PVLAN Operations When One VLT Peer is Down.............................................................................................. 955
PVLAN Operations When a VLT Peer is Restarted.............................................................................................955
Interoperation of VLT Nodes in a PVLAN with ARP Requests.......................................................................... 955
Scenarios for VLAN Membership and MAC Synchronization With VLT Nodes in PVLAN............................955
Conguring a VLT VLAN or LAG in a PVLAN............................................................................................................ 957
Creating a VLT LAG or a VLT VLAN......................................................................................................................957
Associating the VLT LAG or VLT VLAN in a PVLAN...........................................................................................958
Proxy ARP Capability on VLT Peer Nodes..................................................................................................................959
Working of Proxy ARP for VLT Peer Nodes.........................................................................................................959
Conguring VLAN-Stack over VLT............................................................................................................................. 960
Congure BFD in VLT Domain..................................................................................................................................... 962
Sample BFD conguration in VLT domain............................................................................................................ 963
66 Virtual Router Redundancy Protocol (VRRP).......................................................................................... 966
VRRP Overview.............................................................................................................................................................966
VRRP Benets............................................................................................................................................................... 967
VRRP Implementation................................................................................................................................................... 967
VRRP Conguration...................................................................................................................................................... 968
Conguration Task List............................................................................................................................................968
Setting VRRP Initialization Delay............................................................................................................................976
Sample Congurations...................................................................................................................................................977
VRRP for an IPv4 Conguration............................................................................................................................ 977
67 Debugging and Diagnostics......................................................................................................................980
Supported Modes..........................................................................................................................................................980
Debugging Aggregator Operation................................................................................................................................980
All interfaces on the Aggregator are operationally down....................................................................................980
Broadcast, unknown multicast, and DLF packets switched at a very low rate................................................ 981
Flooded packets on all VLANs are received on a server......................................................................................981
Software show Commands..........................................................................................................................................982
Oine Diagnostics.........................................................................................................................................................983
Important Points to Remember............................................................................................................................. 983
Running Oine Diagnostics................................................................................................................................... 983
Trace Logs...................................................................................................................................................................... 984
Auto Save on Crash or Rollover.............................................................................................................................984
Using the Show Hardware Commands.......................................................................................................................984
Environmental Monitoring............................................................................................................................................ 986
Recognize an Over-Temperature Condition......................................................................................................... 986
Troubleshoot an Over-Temperature Condition......................................................................................................987
Recognize an Under-Voltage Condition................................................................................................................988
Troubleshoot an Under-Voltage Condition............................................................................................................988
Troubleshooting Packet Loss........................................................................................................................................988
Displaying Drop Counters....................................................................................................................................... 989
Dataplane Statistics.................................................................................................................................................990
Displaying Stack Port Statistics..............................................................................................................................991
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