Advanced Traffic Management Guide K/KA/KB.15.15

Viewing status for a specific VLAN................................................................................144
Viewing status for a specific port list..............................................................................145
Viewing status per-port per-VLAN .................................................................................146
Viewing BPDU status and related information.......................................................................147
Viewing RPVST+ VLAN and vPort system limits................................................................148
Viewing the RPVST+ configuration......................................................................................152
Viewing the global RPVST+ configuration.......................................................................152
Viewing the global RPVST+ configuration per VLAN........................................................153
Viewing the global RPVST+ configuration per port...........................................................154
Viewing the global RPVST+ configuration per port per VLAN............................................155
Troubleshooting an RPVST+ configuration................................................................................155
Viewing the change history of root bridges..........................................................................156
Enabling traps and Viewing trap configuration.....................................................................156
Viewing debug counters for all VLAN instances...................................................................157
Viewing debug counters per-VLAN.....................................................................................158
Viewing debug counters per-port per-VLAN.........................................................................159
Field descriptions for RPVST+ debug command output..........................................................160
RPVST+ event log messages..............................................................................................161
Using RPVST+ debug.......................................................................................................162
About RPVST+......................................................................................................................163
Comparing spanning tree options......................................................................................163
Understanding how RPVST+ operates.................................................................................163
Working with the default RPVST+ configuration...............................................................166
Operating notes..............................................................................................................166
5 Switch meshing......................................................................................168
Introduction..........................................................................................................................168
Finding the fastest path.....................................................................................................168
Meshing allows scalable responses to increasing bandwidth demand................................169
Preparing to configure switch meshing.....................................................................................169
Configuring switch meshing...................................................................................................169
Configuring switch meshing (Menu).........................................................................................170
Configuring concurrent meshing and routing............................................................................172
Meshing routers and switches............................................................................................172
Viewing switch mesh status....................................................................................................174
About switch meshing...........................................................................................................178
Switch mesh domain........................................................................................................178
Edge switch.....................................................................................................................178
Operating rules...............................................................................................................178
Using a heterogeneous switch mesh...................................................................................180
Bringing up a switch mesh domain.....................................................................................180
Operating notes for switch meshing....................................................................................181
Flooded traffic............................................................................................................181
Unicast packets with unknown destinations.....................................................................182
Spanning tree operation with switch meshing..................................................................182
Filtering/security in meshed switches..............................................................................184
IP Multicast (IGMP) in meshed switches..........................................................................184
Static VLANs ..................................................................................................................184
Dynamic VLANs..............................................................................................................185
Jumbo packets.................................................................................................................185
Mesh design optimization.................................................................................................185
Configuring VRRP with concurrent meshing and routing.........................................................186
Other requirements and restrictions....................................................................................187
6 Quality of Service: Managing bandwidth effectively...................................188
Overview............................................................................................................................188
Contents 7