Appendix: stp state, Switch 1 – Allied Telesis AR400 User Manual

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Appendix: STP state > Switch 1

Appendix: STP state

In most of the examples in this document, the switches are configured in a loop and are all in
the same VLAN. To prevent packets from looping the network, STP is configured. The STP
state on each switch is given in the following output screens.

Switch 1

Note that port 50 on switch 1 is in a discarding state.

Manager Switch 1> show stp=default port=49-50

STP Port Information

------------------------------------------------------------------------

STP ..................... default

STP Status ............ ON

Port .................. 49

RSTP Port Role ...... Root

State ............... Forwarding

Point To Point ...... Yes (Auto)

Port Priority ....... 128

Port Identifier ..... 8031

Pathcost ............ 20000 (auto configured)

Designated Root ..... 32768 : 00-00-cd-01-4b-10

Designated Cost ..... 0

Designated Bridge ... 32768 : 00-00-cd-01-4b-10

Designated Port ..... 801a

EdgePort ............ No

VLAN membership ..... 1

Counters:

Loopback Disabled 0

Port .................. 50

RSTP Port Role ...... Alternate

State ............... Discarding