HP VPN Firewall Appliances Network Management Configuration Guide

104
Displaying and maintaining the spanning tree
Task Command Remarks
Display information about ports blocked
by spanning tree protection functions.
display stp abnormal-port [ | { begin |
exclude | include } regular-expression ]
Available in any
view.
Display BPDU statistics on ports.
display stp bpdu-statistics [ interface
interface-type interface-number [ instance
instance-id ] ] [ | { begin | exclude |
include } regular-expression ]
Available in any
view.
Display information about ports shut
down by spanning tree protection
functions.
display stp down-port [ | { begin |
exclude | include } regular-expression ]
Available in any
view.
Display historical information about port
role calculations for the specified MSTI or
all MSTIs.
display stp [ instance instance-id ] history
[ | { begin | exclude | include }
regular-expression ]
Available in any
view.
Display statistics about TC/TCN BPDUs
sent and received by all ports in the
specified MSTI or all MSTIs.
display stp [ instance instance-id ] tc [ |
{ begin | exclude | include }
regular-expression ]
Available in any
view.
Display spanning tree status and
statistics.
display stp [ instance instance-id ]
[ interface interface-list ] [ brief ] [ | { begin
| exclude | include } regular-expression ]
Available in any
view.
Display MST region configuration
information in effect.
display stp region-configuration [ |
{ begin | exclude | include }
regular-expression ]
Available in any
view.
Display root bridge information for all
MSTIs.
display stp root [ | { begin | exclude |
include } regular-expression ]
Available in any
view.
Clear spanning tree statistics. reset stp [ interface interface-list ]
Available in user
view.
MSTP configuration example
Network requirements
As shown in Figure 58:
• All devices on the network are in the same MST region. Device A and Device B work at the
distribution layer. Device C and Device D work at the access layer.
• Configure MSTP so that packets of different VLANs are forwarded along different spanning trees:
Packets of VLAN 10 are forwarded along MSTI 1, those of VLAN 30 are forwarded along MSTI 3,
those of VLAN 40 are forwarded along MSTI 4, and those of VLAN 20 are forwarded along MSTI
0.
• VLAN 10 and VLAN 30 are terminated on distribution layer devices, and VLAN 40 is terminated
on access layer devices. The root bridges of MSTI 1 and MSTI 3 are Device A and Device B,
respectively, and the root bridge of MSTI 4 is Device C.