On occasion, when troubleshooting a network, it is important to see if the port (or ports) is in forwarding or blocking mode. This can be important, especially if you cant get to something. In this case below, Im looking at Vlan 1 to see if a few ports are in the right mode or not. The first two ports is what Im concerned about. Looks like they are forwarding, so I guess I have to look elsewhere.
Core6610#sh 802 vlan 1
--- VLAN 1 [ STP Instance owned by VLAN 1 ] ----------------------------
Bridge IEEE 802.1W Parameters:
Bridge Bridge Bridge Bridge Force tx
Identifier MaxAge Hello FwdDly Version Hold
hex sec sec sec cnt
0400748ef8ffb655 20 2 15 Default 3
RootBridge RootPath DesignatedBri- Root Max Fwd Hel
Identifier Cost dge Identifier Port Age Dly lo
hex hex sec sec sec
0400748ef8ffb655 0 0400748ef8ffb655 Root 20 15 2
Port IEEE 802.1W Parameters:
<--- Config Params --><-------------- Current state ----------------->
Port Pri PortPath P2P Edge Role State Designa- Designated
Num Cost Mac Port ted cost bridge
1/1/1 128 20000 F F DESIGNATED FORWARDING 0 0400748ef8ffb655
1/1/2 128 20000 F F DESIGNATED FORWARDING 0 0400748ef8ffb655
1/1/3 128 200000 F F DESIGNATED FORWARDING 0 0400748ef8ffb655
1/1/4 128 2000000 F F DESIGNATED FORWARDING 0 0400748ef8ffb655
1/1/5 128 20000 F F DESIGNATED FORWARDING 0 0400748ef8ffb655
1/1/6 128 20000 F F DESIGNATED FORWARDING 0 0400748ef8ffb655
This is the retired Shane Killen personal blog, an IT technical blog about configs and topics related to the Network and Security Engineer working with Cisco, Brocade, Check Point, and Palo Alto and Sonicwall. I hope this blog serves you well. -- May The Lord bless you and keep you. May He shine His face upon you, and bring you peace.
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