I need some hep understanding the proper status of spanning tree within my environment. We had an event recently where the Core switch spanning-tree status went to bridge mode making secondary switch the root. I have set the Core switch value to 0 making it root.
We are seeing spanning-tree portfast associated to ports(Switch to switch) that are in port-channel groups. I thought portfast was intended for end devices and not switch to switch, Unless its related to those ports belonging to the channel group?
TX1-CORE-SW-STK01#show interfaces port-channel
Channel Ports Hash Algorithm Type
------- ----------------------------- -------------------
ch1 No Configured Ports 3
ch2 No Configured Ports 3
ch3 Active: 2/g5, 2/g6 3
ch4 No Configured Ports 3
ch5 No Configured Ports 3
ch6 No Configured Ports 3
ch7 No Configured Ports 3
ch8 No Configured Ports 3
ch9 Active: 2/g7, 2/g17, 2/g8, 6
4/g47, 3/g47, 1/g47
ch10 No Configured Ports 3
ch11 Active: 2/g18, 2/g19, 6
3/g48, 4/g48, 2/g20, 1/g45
ch12 Inactive: 2/g1, 2/g14 3
ch13 Active: 2/g2, 2/g4 3
ch14 No Configured Ports 3
ch15 No Configured Ports 3
ch16 Active: 1/g46, 2/g16, 3/g46 3
ch17 No Configured Ports 3
ch18 No Configured Ports 3
--More-- or (q)uit
ch19 No Configured Ports 3
ch20 No Configured Ports 3
ch21 No Configured Ports 3
ch22 No Configured Ports 3
ch23 No Configured Ports 3
ch24 No Configured Ports 3
ch25 No Configured Ports 3
ch26 No Configured Ports 3
ch27 No Configured Ports 3
ch28 No Configured Ports 3
ch29 No Configured Ports 3
ch30 No Configured Ports 3
ch31 No Configured Ports 3
ch32 No Configured Ports 3
ch33 No Configured Ports 3
ch34 No Configured Ports 3
ch35 No Configured Ports 3
ch36 No Configured Ports 3
ch37 No Configured Ports 3
ch38 No Configured Ports 3
ch39 No Configured Ports 3
ch40 No Configured Ports 3
ch41 No Configured Ports 3
--More-- or (q)uit
ch42 No Configured Ports 3
ch43 No Configured Ports 3
ch44 No Configured Ports 3
ch45 No Configured Ports 3
ch46 No Configured Ports 3
ch47 No Configured Ports 3
ch48 No Configured Ports 3
Hash Algorithm Type
1 - Source MAC, VLAN, EtherType, source module and port Id
2 - Destination MAC, VLAN, EtherType, source module and port Id
3 - Source IP and source TCP/UDP port
4 - Destination IP and destination TCP/UDP port
5 - Source/Destination MAC, VLAN, EtherType, source MODID/port
6 - Source/Destination IP and source/destination TCP/UDP port
TX1-CORE-SW-STK01#show spanning-tree
Spanning tree :Enabled - BPDU Flooding :Disabled - Portfast BPDU filtering :Disabled - mode :rstp
CST Regional Root: 00:00:00:25:64:2C:42:FE
Regional Root Path Cost: 0
ROOT ID
Address 00:25:64:2C:42:FE
This Switch is the Root.
Hello Time 2 Sec Max Age 20 sec Forward Delay 15 sec TxHoldCount 6 sec
Interfaces
Name State Prio.Nbr Cost Sts Role PortFast Restricted
------ -------- --------- ---------- ---- ----- -------- -------
1/g1 Enabled 128.1 20000 FWD Desg Yes No
1/g2 Enabled 128.2 20000 FWD Desg Yes No
1/g3 Enabled 128.3 200000 FWD Desg Yes No
1/g4 Enabled 128.4 200000 FWD Desg Yes No
Name State Prio.Nbr Cost Sts Role PortFast Restricted
------ -------- --------- ---------- ---- ----- -------- -------
1/g5 Enabled 128.5 0 DIS Disb Yes No
1/g6 Enabled 128.6 20000 FWD Desg Yes No
1/g7 Enabled 128.7 0 DIS Disb Yes No
1/g8 Enabled 128.8 200000 FWD Desg Yes No
1/g9 Enabled 128.9 0 DIS Disb Yes No
1/g10 Enabled 128.10 0 DIS Disb Yes No
1/g11 Enabled 128.11 20000 FWD Desg Yes No
1/g12 Enabled 128.12 0 DIS Disb Yes No
1/g13 Enabled 128.13 0 DIS Disb Yes No
1/g14 Enabled 128.14 0 DIS Disb Yes No
1/g15 Enabled 128.15 20000 FWD Desg Yes No
1/g16 Enabled 128.16 20000 FWD Desg Yes No
1/g17 Enabled 128.17 0 DIS Disb Yes No
1/g18 Enabled 128.18 0 DIS Disb Yes No
1/g19 Enabled 128.19 0 DIS Disb Yes No
1/g20 Enabled 128.20 20000 FWD Desg Yes No
Name State Prio.Nbr Cost Sts Role PortFast Restricted
------ -------- --------- ---------- ---- ----- -------- -------
1/g21 Enabled 128.21 0 DIS Disb Yes No
1/g22 Enabled 128.22 0 DIS Disb Yes No
1/g23 Enabled 128.23 0 DIS Disb Yes No
1/g24 Enabled 128.24 200000 FWD Desg Yes No
1/g25 Enabled 128.25 0 DIS Disb Yes No
1/g26 Enabled 128.26 20000 FWD Desg Yes No
1/g27 Enabled 128.27 0 DIS Disb Yes No
1/g28 Enabled 128.28 0 DIS Disb Yes No
1/g29 Enabled 128.29 0 DIS Disb Yes No
1/g30 Enabled 128.30 20000 FWD Desg Yes No
1/g31 Enabled 128.31 0 DIS Disb Yes No
1/g32 Enabled 128.32 0 DIS Disb Yes No
1/g33 Enabled 128.33 0 DIS Disb Yes No
1/g34 Enabled 128.34 0 DIS Disb Yes No
1/g35 Enabled 128.35 20000 FWD Desg Yes No
1/g36 Enabled 128.36 0 DIS Disb Yes No
Name State Prio.Nbr Cost Sts Role PortFast Restricted
------ -------- --------- ---------- ---- ----- -------- -------
1/g37 Enabled 128.37 0 DIS Disb Yes No
1/g38 Enabled 128.38 0 DIS Disb Yes No
1/g39 Enabled 128.39 0 DIS Disb Yes No
1/g40 Enabled 128.40 0 DIS Disb Yes No
1/g41 Enabled 128.41 0 DIS Disb Yes No
1/g42 Enabled 128.42 200000 FWD Desg Yes No
1/g43 Enabled 128.43 0 DIS Disb Yes No
1/g44 Enabled 128.44 0 DIS Disb Yes No
1/g45 Disabled 128.45 0 FWD Disb Yes No
1/g46 Enabled 128.46 0 FWD Disb Yes No
1/g47 Enabled 128.47 0 FWD Disb Yes No
1/g48 Disabled 128.48 0 FWD Disb No No
1/xg1 Enabled 128.49 0 DIS Disb Yes No
1/xg2 Enabled 128.50 0 DIS Disb Yes No
1/xg3 Enabled 128.51 0 DIS Disb Yes No
1/xg4 Enabled 128.52 0 DIS Disb Yes No
Name State Prio.Nbr Cost Sts Role PortFast Restricted
------ -------- --------- ---------- ---- ----- -------- -------
2/g1 Enabled 128.53 0 DIS Disb No No
2/g2 Enabled 128.54 0 FWD Disb No No
2/g3 Enabled 128.55 0 DIS Disb No No
2/g4 Enabled 128.56 0 FWD Disb No No
2/g5 Enabled 128.57 0 FWD Disb Yes No
2/g6 Enabled 128.58 0 FWD Disb Yes No
2/g7 Enabled 128.59 0 FWD Disb Yes No
2/g8 Enabled 128.60 0 FWD Disb Yes No
2/g9 Enabled 128.61 0 DIS Disb No No
2/g10 Enabled 128.62 20000 FWD Desg No No
2/g11 Enabled 128.63 0 DIS Disb No No
2/g12 Enabled 128.64 0 DIS Disb No No
2/g13 Enabled 128.65 0 DIS Disb No No
2/g14 Enabled 128.66 0 DIS Disb No No
2/g15 Enabled 128.67 0 DIS Disb No No
2/g16 Enabled 128.68 0 FWD Disb No No
Name State Prio.Nbr Cost Sts Role PortFast Restricted
------ -------- --------- ---------- ---- ----- -------- -------
2/g17 Enabled 128.69 0 FWD Disb Yes No
2/g18 Enabled 128.70 0 FWD Disb Yes No
2/g19 Enabled 128.71 0 FWD Disb Yes No
2/g20 Enabled 128.72 0 FWD Disb Yes No
2/g21 Enabled 128.73 0 DIS Disb Yes No
2/g22 Enabled 128.74 0 DIS Disb No No
2/g23 Enabled 128.75 0 DIS Disb Yes No
2/g24 Enabled 128.76 0 DIS Disb Yes No
2/xg1 Enabled 128.77 0 DIS Disb Yes No
2/xg2 Enabled 128.78 0 DIS Disb Yes No
2/xg3 Enabled 128.79 0 DIS Disb Yes No
2/xg4 Enabled 128.80 0 DIS Disb Yes No
3/g1 Enabled 128.105 0 DIS Disb No No
3/g2 Enabled 128.106 20000 FWD Desg No No
3/g3 Enabled 128.107 0 DIS Disb No No
3/g4 Enabled 128.108 0 DIS Disb No No
Name State Prio.Nbr Cost Sts Role PortFast Restricted
------ -------- --------- ---------- ---- ----- -------- -------
3/g5 Enabled 128.109 0 DIS Disb No No
3/g6 Enabled 128.110 0 DIS Disb No No
3/g7 Enabled 128.111 0 DIS Disb No No
3/g8 Enabled 128.112 0 DIS Disb No No
3/g9 Enabled 128.113 0 DIS Disb No No
3/g10 Enabled 128.114 200000 FWD Desg No No
3/g11 Enabled 128.115 20000 FWD Desg No No
3/g12 Enabled 128.116 20000 FWD Desg No No
3/g13 Enabled 128.117 0 DIS Disb No No
3/g14 Enabled 128.118 0 DIS Disb No No
3/g15 Enabled 128.119 0 DIS Disb No No
3/g16 Enabled 128.120 200000 FWD Desg No No
3/g17 Enabled 128.121 0 DIS Disb No No
3/g18 Enabled 128.122 0 DIS Disb No No
3/g19 Enabled 128.123 0 DIS Disb No No
3/g20 Enabled 128.124 20000 FWD Desg No No
Name State Prio.Nbr Cost Sts Role PortFast Restricted
------ -------- --------- ---------- ---- ----- -------- -------
3/g21 Enabled 128.125 0 DIS Disb No No
3/g22 Enabled 128.126 0 DIS Disb No No
3/g23 Enabled 128.127 20000 FWD Desg No No
3/g24 Enabled 128.128 20000 FWD Desg No No
3/g25 Enabled 128.129 0 DIS Disb No No
3/g26 Enabled 128.130 0 DIS Disb No No
3/g27 Enabled 128.131 200000 FWD Desg No No
3/g28 Enabled 128.132 0 DIS Disb No No
3/g29 Enabled 128.133 0 DIS Disb No No
3/g30 Enabled 128.134 20000 FWD Desg No No
3/g31 Enabled 128.135 200000 FWD Desg No No
3/g32 Enabled 128.136 200000 FWD Desg No No
3/g33 Enabled 128.137 200000 FWD Desg No No
3/g34 Enabled 128.138 0 DIS Disb No No
3/g35 Enabled 128.139 20000 FWD Desg No No
3/g36 Enabled 128.140 20000 FWD Desg No No
Name State Prio.Nbr Cost Sts Role PortFast Restricted
------ -------- --------- ---------- ---- ----- -------- -------
3/g37 Enabled 128.141 0 DIS Disb No No
3/g38 Enabled 128.142 0 DIS Disb No No
3/g39 Enabled 128.143 200000 FWD Desg No No
3/g40 Enabled 128.144 20000 FWD Desg No No
3/g41 Enabled 128.145 200000 FWD Desg No No
3/g42 Enabled 128.146 20000 FWD Desg No No
3/g43 Enabled 128.147 20000 FWD Desg No No
3/g44 Enabled 128.148 20000 FWD Desg No No
3/g45 Enabled 128.149 0 DIS Disb Yes No
3/g46 Enabled 128.150 0 FWD Disb No No
3/g47 Enabled 128.151 0 FWD Disb Yes No
3/g48 Enabled 128.152 0 FWD Disb Yes No
3/xg1 Enabled 128.153 0 DIS Disb Yes No
3/xg2 Enabled 128.154 0 DIS Disb Yes No
3/xg3 Enabled 128.155 0 DIS Disb Yes No
3/xg4 Enabled 128.156 0 DIS Disb Yes No
Name State Prio.Nbr Cost Sts Role PortFast Restricted
------ -------- --------- ---------- ---- ----- -------- -------
4/g1 Enabled 128.157 0 DIS Disb No No
4/g2 Enabled 128.158 20000 FWD Desg No No
4/g3 Enabled 128.159 0 DIS Disb No No
4/g4 Enabled 128.160 0 DIS Disb No No
4/g5 Enabled 128.161 0 DIS Disb No No
4/g6 Enabled 128.162 0 DIS Disb No No
4/g7 Enabled 128.163 0 DIS Disb No No
4/g8 Enabled 128.164 0 DIS Disb No No
4/g9 Enabled 128.165 0 DIS Disb No No
4/g10 Enabled 128.166 20000 FWD Desg No No
4/g11 Enabled 128.167 20000 FWD Desg No No
4/g12 Enabled 128.168 20000 FWD Desg No No
4/g13 Enabled 128.169 0 DIS Disb No No
4/g14 Enabled 128.170 0 DIS Disb No No
4/g15 Enabled 128.171 0 DIS Disb No No
4/g16 Enabled 128.172 0 DIS Disb No No
Name State Prio.Nbr Cost Sts Role PortFast Restricted
------ -------- --------- ---------- ---- ----- -------- -------
4/g17 Enabled 128.173 0 DIS Disb No No
4/g18 Enabled 128.174 0 DIS Disb No No
4/g19 Enabled 128.175 0 DIS Disb No No
4/g20 Enabled 128.176 20000 FWD Desg No No
4/g21 Enabled 128.177 0 DIS Disb No No
4/g22 Enabled 128.178 0 DIS Disb No No
4/g23 Enabled 128.179 20000 FWD Desg No No
4/g24 Enabled 128.180 20000 FWD Desg No No
4/g25 Enabled 128.181 0 DIS Disb No No
4/g26 Enabled 128.182 0 DIS Disb No No
4/g27 Enabled 128.183 0 DIS Disb No No
4/g28 Enabled 128.184 0 DIS Disb No No
4/g29 Enabled 128.185 0 DIS Disb No No
4/g30 Enabled 128.186 20000 FWD Desg No No
4/g31 Enabled 128.187 0 DIS Disb No No
4/g32 Enabled 128.188 0 DIS Disb No No
Name State Prio.Nbr Cost Sts Role PortFast Restricted
------ -------- --------- ---------- ---- ----- -------- -------
4/g33 Enabled 128.189 0 DIS Disb No No
4/g34 Enabled 128.190 0 DIS Disb No No
4/g35 Enabled 128.191 20000 FWD Desg No No
4/g36 Enabled 128.192 20000 FWD Desg No No
4/g37 Enabled 128.193 0 DIS Disb No No
4/g38 Enabled 128.194 0 DIS Disb No No
4/g39 Enabled 128.195 0 DIS Disb No No
4/g40 Enabled 128.196 20000 FWD Desg No No
4/g41 Enabled 128.197 0 DIS Disb No No
4/g42 Enabled 128.198 0 DIS Disb No No
4/g43 Enabled 128.199 20000 FWD Desg No No
4/g44 Enabled 128.200 20000 FWD Desg No No
4/g45 Enabled 128.201 0 DIS Disb Yes No
4/g46 Enabled 128.202 0 DIS Disb Yes No
4/g47 Enabled 128.203 0 FWD Disb Yes No
4/g48 Enabled 128.204 0 FWD Disb Yes No
Name State Prio.Nbr Cost Sts Role PortFast Restricted
------ -------- --------- ---------- ---- ----- -------- -------
4/xg1 Enabled 128.205 0 DIS Disb Yes No
4/xg2 Enabled 128.206 0 DIS Disb Yes No
4/xg3 Enabled 128.207 0 DIS Disb Yes No
4/xg4 Enabled 128.208 0 DIS Disb Yes No
ch1 Enabled 96.626 0 DIS Disb No No
ch2 Enabled 96.627 0 DIS Disb No No
ch3 Enabled 96.628 10000 FWD Desg No No
ch4 Enabled 96.629 0 DIS Disb No No
ch5 Enabled 96.630 0 DIS Disb No No
ch6 Enabled 96.631 0 DIS Disb No No
ch7 Enabled 96.632 0 DIS Disb No No
ch8 Enabled 96.633 0 DIS Disb No No
ch9 Enabled 96.634 3333 FWD Desg No No
ch10 Enabled 96.635 0 DIS Disb No No
ch11 Enabled 96.636 3333 FWD Desg No No
Name State Prio.Nbr Cost Sts Role PortFast Restricted
------ -------- --------- ---------- ---- ----- -------- -------
ch12 Enabled 96.637 0 DIS Disb No No
ch13 Enabled 96.638 10000 FWD Desg No No
ch14 Enabled 96.639 0 DIS Disb No No
ch15 Enabled 96.640 0 DIS Disb No No
ch16 Enabled 96.641 6666 FWD Desg No No
ch17 Enabled 96.642 0 DIS Disb Yes No
ch18 Enabled 96.643 0 DIS Disb Yes No
ch19 Enabled 96.644 0 DIS Disb Yes No
ch20 Enabled 96.645 0 DIS Disb Yes No
ch21 Enabled 96.646 0 DIS Disb Yes No
ch22 Enabled 96.647 0 DIS Disb Yes No
ch23 Enabled 96.648 0 DIS Disb Yes No
ch24 Enabled 96.649 0 DIS Disb Yes No
ch25 Enabled 96.650 0 DIS Disb Yes No
ch26 Enabled 96.651 0 DIS Disb Yes No
ch27 Enabled 96.652 0 DIS Disb Yes No
Name State Prio.Nbr Cost Sts Role PortFast Restricted
------ -------- --------- ---------- ---- ----- -------- -------
ch28 Enabled 96.653 0 DIS Disb Yes No
ch29 Enabled 96.654 0 DIS Disb Yes No
ch30 Enabled 96.655 0 DIS Disb Yes No
ch31 Enabled 96.656 0 DIS Disb Yes No
ch32 Enabled 96.657 0 DIS Disb Yes No
ch33 Enabled 96.658 0 DIS Disb Yes No
ch34 Enabled 96.659 0 DIS Disb Yes No
ch35 Enabled 96.660 0 DIS Disb Yes No
ch36 Enabled 96.661 0 DIS Disb Yes No
ch37 Enabled 96.662 0 DIS Disb Yes No
ch38 Enabled 96.663 0 DIS Disb Yes No
ch39 Enabled 96.664 0 DIS Disb Yes No
ch40 Enabled 96.665 0 DIS Disb Yes No
ch41 Enabled 96.666 0 DIS Disb Yes No
ch42 Enabled 96.667 0 DIS Disb Yes No
ch43 Enabled 96.668 0 DIS Disb Yes No
Name State Prio.Nbr Cost Sts Role PortFast Restricted
------ -------- --------- ---------- ---- ----- -------- -------
ch44 Enabled 96.669 0 DIS Disb Yes No
ch45 Enabled 96.670 0 DIS Disb Yes No
ch46 Enabled 96.671 0 DIS Disb Yes No
ch47 Enabled 96.672 0 DIS Disb Yes No
ch48 Enabled 96.673 0 DIS Disb Yes No
Name State Prio.Nbr Cost Sts Role PortFast Restricted
------ -------- --------- ---------- ---- ----- -------- -------