© 2004 Cisco Systems, Inc. All rights reserved. Printed in USA.
Presentation_ID.scr
595959
© 2004 Cisco Systems, Inc. All rights reserved.
RST-3508
9805_05_2004_c2
Spanning Tree Support
• Ensure the sum of the logical interfaces across all instances of Spanning Tree for
different VLANs does not exceed 3,000 for Supervisor IV/V, 1500 for Supervisor II-Plus;
Supervisor I and II support 400 PVST+ instances and 300 Rapid PVST+ instances
• Sum of logical interfaces = (# of trunks) x (# of active VLANs per trunk) + (non-trunking
interfaces)
• If greater use MST mode
r3_4507R_S4# sh spanning-tree summary totals( sh spantree summary on CAT OS)
Switch is in pvst mode
Root bridge for: VLAN0001-VLAN0003, VLAN0020
Extended system ID is enabled
Portfast Default is disabled
PortFast BPDU Guard Default is disabled
Portfast BPDU Filter Default is disabled
Loopguard Default is disabled
EtherChannel misconfig guard is enabled
UplinkFast is disabled
BackboneFast is disabled
Pathcost method used is short
Name Blocking Listening Learning Forwarding STP Active
---------------------- -------- --------- -------- ---------- ----------
4 vlans 0 0 0 10 10
UNICAST PACKET
FORWARDING
606060
© 2003, Cisco Systems, Inc. All rights reserved.
RST-3508
9805_05_2004_c2
To Next Page
Loading...
Need help?
General
