Displaying SSTP Information
To verify that SSTP is in effect, enter the following command at any level of the CLI.
device# show span STP instance owned by VLAN 4094 Global STP (IEEE 802.1D) Parameters: VLAN Root Root Root Prio Max He- Ho- Fwd Last Chg Bridge ID ID Cost Port rity Age llo ld dly Chang cnt Address Hex sec sec sec sec sec 800000a0c9c002a0 4 1/1/8 8000 20 2 1 15 110 2 cc4e24894e20 Port STP Parameters: Port Prio Path State Fwd Design Designated Designated Num rity Cost Trans Cost Root Bridge Hex 1/1/1 80 4 FORWARDING 4 4 800000a0c9c002a0 8000cc4e24894e20 1/1/5 80 4 BLOCKING 0 0 800000a0c9c002a0 800000a0c9c002a0 1/1/6 80 4 BLOCKING 0 0 800000a0c9c002a0 800000a0c9c002a0 1/1/7 80 4 BLOCKING 0 0 800000a0c9c002a0 800000a0c9c002a0 1/1/8 80 4 FORWARDING 6 0 800000a0c9c002a0 800000a0c9c002a0 1/1/17 80 4 BLOCKING 0 0 800000a0c9c002a0 800000a0c9c002a0 1/1/18 80 4 BLOCKING 0 0 800000a0c9c002a0 800000a0c9c002a0 1/1/31 80 4 BLOCKING 26 0 800000a0c9c002a0 800000a0c9c002a0 1/1/32 80 4 BLOCKING 1 0 800000a0c9c002a0 800000a0c9c002a0 1/1/33 80 4 BLOCKING 2 0 800000a0c9c002a0 800000a0c9c002a0 1/1/34 80 4 BLOCKING 2 0 800000a0c9c002a0 800000a0c9c002a0 1/1/45 80 4 BLOCKING 0 0 800000a0c9c002a0 800000a0c9c002a0 1/1/46 80 4 BLOCKING 0 0 800000a0c9c002a0 800000a0c9c002a0 lg1 80 4 BLOCKING 0 0 800000a0c9c002a0 800000a0c9c002a0 lg2 80 4 BLOCKING 2 0 800000a0c9c002a0 800000a0c9c002a0 L2 VLAN 1 to 5 101 to 105 1000 2000 3000 are members of single spanning tree.
The detail parameter and its additional optional parameters display detailed information for individual ports. Refer to Displaying STP Information.