Brocade FastIron SX, FCX, and ICX Diagnostic Reference User Manual

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Brocade FastIron SX, FCX, and ICX Diagnostic Reference

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MCT debug commands

CLUSTER Config debugging is :OFF

CLUSTER FSM debugging is :OFF

CLUSTER MDUP debugging is :ON

CLUSTER interface mac debugging is :OFF

CLUSTER Forwarding debugging is :OFF

CLUSTER STP debugging is :OFF

CLUSTER BPDU forwarding debugging is :OFF

CLUSTER CCP debugging is :OFF

debug cluster stp

Syntax: [no] debug cluster stp

This command enables debugging of STP and RSTP modules. The output details how the STP
registers the ICL or CCEP ports. Changes occur while supporting MCT on STP, such as ICL guard,
CCEP state sync, STP and CCP messages, and topology change messages are tracked. Command
output resembles the following example.

Brocade# debug cluster stp

CLUSTER STP debugging is now ON

Brocade(config-vlan-101)# spanning-tree 802-1w

STP -> INIT STP for bridge, vlan 10. Port mask 194 201 204 1168 1170 1173 to 1174

2000 2147 to 2149 2154 2157 2185 2187 to 2188 2192 to 2193 2195 to 2196 2201 2205

2368 to 2369 2371 to 2372 2377 2381 2387 to 2389 2394 2397 2425 2427 to 2428

Startup:: In initialize_bridge_spanning_tree::MCT enabled on this VLAN 101

Startup:: In initialize_bridge_spanning_tree:: MCT enabled Clearing ICL port

Searching for ICL and CCEP for this VLAN/STP

stputil_discover_mct:: ICL port is 4/3

Initialize Port 4/3. vlan 101

initialize_port(T=173641): icl-port guard timer cleared on port 4/3, VLAN 101

initialize_port:: Set ICL to FORWARDING. Vlan 101 port 4/3

Searching for ICL and CCEP for this VLAN/STP

Initialize Port 4/10. vlan 101

initialize_port(T=173641): icl-port guard timer cleared on port 4/10, VLAN 101

initialize_port:: Port is neither ICL/ CCEP of Root Bridge. Set to BLOCKING. Vlan

101 port 4/10

Searching for ICL and CCEP for this VLAN/STP

stputil_discover_mct::This is CCEP port 4/13

Initialize Port 4/13. vlan 101

initialize_port(T=173641): icl-port guard timer cleared on port 4/13, VLAN 101

initialize_port:: Set CCEP or root bridge to FORWARDING. Vlan 101 port 4/13

stputil_mct_send_ccep_state_to_peer(T=173641,vlan=101,port=204,state=FORWARDING)

primary_port 4/13 -->

stputil_mct_send_ccep_state_to_peer(T=173641,vlan=101,port=204,state=FORWARDING)

primary_port 4/13 done

rstp_setup_this_bridge_values:: mct_enable = TRUE

rstputil_mct_enable_port.vlan 101 port 4/3