HP J8697A Advanced Traffic Management Guide

3-80
Multiple Instance Spanning-Tree Operation
STP Loop Guard
Figure 3-40. Example of Spanning-tree with Port 2 Configured as the loop-guard Port
The Spanning Tree configuration is shown in Figure 3-41.
HP Switch(config)# show spanning-tree
Multiple Spanning Tree (MST) Information
STP Enabled : Yes
Force Version : MSTP-operation
IST Mapped VLANs : 1-4094
Switch MAC Address : 0024a8-d13a40
Switch Priority : 32768
Max Age : 20
Max Hops : 20
Forward Delay : 15
Topology Change Count : 1
Time Since Last Change : 20 mins
CST Root MAC Address : 001083-847000
CST Root Priority : 0
CST Root Path Cost : 60000
CST Root Port : 1
IST Regional Root MAC Address : 0024a8-d13a40
IST Regional Root Priority : 32768
IST Regional Root Path Cost : 0
IST Remaining Hops : 20
Root Guard Ports :
Loop Guard Ports : 2
TCN Guard Ports :
BPDU Protected Ports :
BPDU Filtered Ports :
PVST Protected Ports :
PVST Filtered Ports :
| Prio | Designated Hello
Port Type | Cost rity State | Bridge Time PtP Edge
------ --------- + --------- ---- ------------ + ------------- ---- --- ----
1 100/1000T | 20000 128 Forwarding | 001871-cdea00 2 Yes No
2 100/1000T | Auto 128 Inconsistent |
3 100/1000T | Auto 128 Disabled |
4 100/1000T | Auto 128 Disabled |
5 100/1000T | Auto 128 Disabled |
6 100/1000T | Auto 128 Disabled |
7 100/1000T | Auto 128 Disabled |
8 100/1000T | Auto 128 Disabled |
Port 2 is configured as the Loop Guard port.

HP J8697A Specifications

General

Ports	24
Form Factor	Rack-mountable
Power Supply	Internal
Management	Managed
VLAN Support	Yes
Jumbo Frame Support	Yes
Switching Capacity	48 Gbps
Forwarding Rate	35.7 Mpps
Model	HP J8697A
Port Type	10/100/1000BASE-T
Layer	Layer 2