Spanning-tree STP with new nexus

yog19812003 · ‎08-11-2015

Hi Team,

We are installing new Nexus 3064 which will connect to existing 3750 core switch. The nexus will purely work on L2 providing 10 gig backbone.

The question I here is do I need to do extra configuration related to STP and what things need to be taken care before we connect to existing Cisco 3750? The nexus will be connecting to ESXi and storage.

We'll be creating VPC between Nexus and 3750 with two 10 Gig links.

-Yogesh

Reza Sharifi · ‎08-11-2015

Hi,

Assuming you want to keep the core switches (3750) as root, you can simply configures the Nexus with the the same type of STP as your core and keep the STP parameters in default config.

HTH

yog19812003 · ‎08-17-2015

Is it really require to change any STP config at other side? I believe if we are using connection as VPC, it will act one single logical connection which should not have two redundant links.

Please comment

zakfleming1 · ‎08-11-2015

You will probably want to make your 3750 the STP route bridge.

Can you post the output of show spanning-tree from the 3750 please?

yog19812003 · ‎08-12-2015

sh spanning-tree

VLAN0001
Spanning tree enabled protocol ieee
Root ID Priority 32769
Address 0007.7db1.dd00
This bridge is the root
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec

Bridge ID Priority 32769 (priority 32768 sys-id-ext 1)
Address 0007.7db1.dd00
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300 sec

Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------
Gi3/0/31 Desg FWD 19 128.139 P2p
Gi4/0/42 Desg FWD 4 128.204 P2p

VLAN0002
Spanning tree enabled protocol ieee
Root ID Priority 32770
Address 0007.7db1.dd00
This bridge is the root
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec

Bridge ID Priority 32770 (priority 32768 sys-id-ext 2)
Address 0007.7db1.dd00
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300 sec

Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------
Gi1/0/13 Desg FWD 4 128.13 P2p
Gi2/0/13 Desg FWD 4 128.67 P2p
Gi2/0/38 Desg FWD 4 128.92 P2p
Gi3/0/31 Desg FWD 19 128.139 P2p
Gi3/0/38 Desg FWD 4 128.146 P2p

VLAN0004
Spanning tree enabled protocol ieee
Root ID Priority 32772
Address 0007.7db1.dd00
This bridge is the root
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec

Bridge ID Priority 32772 (priority 32768 sys-id-ext 4)
Address 0007.7db1.dd00
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300 sec

Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------
Gi1/0/7 Desg FWD 4 128.7 P2p
Gi1/0/13 Desg FWD 4 128.13 P2p
Gi1/0/15 Desg FWD 19 128.15 P2p
Gi1/0/17 Desg FWD 19 128.17 P2p
Gi1/0/19 Desg FWD 19 128.19 P2p
Gi1/0/21 Desg FWD 19 128.21 P2p
Gi1/0/23 Desg FWD 19 128.23 P2p
Gi1/0/31 Desg FWD 100 128.31 P2p

Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------

Gi1/0/39 Desg FWD 4 128.39 P2p Edge
Gi2/0/7 Desg FWD 4 128.61 P2p
Gi2/0/13 Desg FWD 4 128.67 P2p
Gi2/0/15 Desg FWD 19 128.69 P2p
Gi2/0/17 Desg FWD 19 128.71 P2p
Gi2/0/19 Desg FWD 19 128.73 P2p
Gi2/0/21 Desg FWD 19 128.75 P2p
Gi2/0/23 Desg FWD 19 128.77 P2p
Gi2/0/31 Desg FWD 4 128.85 P2p
Gi2/0/38 Desg FWD 4 128.92 P2p
Gi2/0/43 Desg FWD 4 128.97 P2p
Gi3/0/15 Desg FWD 19 128.123 P2p
Gi3/0/17 Desg FWD 19 128.125 P2p
Gi3/0/25 Desg FWD 19 128.133 P2p
Gi3/0/27 Desg FWD 19 128.135 P2p
Gi3/0/29 Desg FWD 4 128.137 P2p
Gi3/0/31 Desg FWD 19 128.139 P2p
Gi3/0/34 Desg FWD 4 128.142 P2p
Gi3/0/35 Desg FWD 19 128.143 P2p
Gi3/0/38 Desg FWD 4 128.146 P2p
Gi3/0/43 Desg FWD 4 128.151 P2p
Gi4/0/15 Desg FWD 4 128.177 P2p Edge
Gi4/0/17 Desg FWD 4 128.179 P2p
Gi4/0/19 Desg FWD 4 128.181 P2p
Gi4/0/21 Desg FWD 19 128.183 P2p
Gi4/0/25 Desg FWD 19 128.187 P2p
Gi4/0/29 Desg FWD 4 128.191 P2p Edge
Gi4/0/35 Desg FWD 4 128.197 P2p
Gi4/0/38 Desg FWD 4 128.200 P2p
Gi4/0/43 Desg FWD 4 128.205 P2p Edge
Gi5/0/5 Desg FWD 4 128.221 P2p
Gi5/0/10 Desg FWD 4 128.226 P2p
Gi5/0/17 Desg FWD 19 128.233 P2p
Gi5/0/27 Desg FWD 4 128.243 P2p
Gi5/0/43 Desg FWD 4 128.259 P2p Edge

VLAN0005
Spanning tree enabled protocol ieee
Root ID Priority 32773
Address 0007.7db1.dd00
This bridge is the root
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec

Bridge ID Priority 32773 (priority 32768 sys-id-ext 5)
Address 0007.7db1.dd00
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300 sec

Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------
Gi1/0/1 Desg FWD 19 128.1 P2p
Gi1/0/2 Desg FWD 4 128.2 P2p
Gi1/0/3 Desg FWD 4 128.3 P2p
Gi1/0/4 Desg FWD 100 128.4 Shr Edge
Gi1/0/5 Desg FWD 4 128.5 P2p
Gi1/0/6 Desg FWD 4 128.6 P2p
Gi1/0/13 Desg FWD 4 128.13 P2p
Gi1/0/14 Desg FWD 19 128.14 P2p

Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------

Gi1/0/16 Desg FWD 19 128.16 P2p
Gi1/0/18 Desg FWD 19 128.18 P2p
Gi1/0/20 Desg FWD 19 128.20 P2p
Gi1/0/22 Desg FWD 19 128.22 P2p
Gi1/0/24 Desg FWD 19 128.24 P2p
Gi1/0/26 Desg FWD 4 128.26 P2p
Gi1/0/28 Desg FWD 4 128.28 P2p
Gi1/0/30 Desg FWD 4 128.30 P2p
Gi1/0/32 Desg FWD 19 128.32 P2p
Gi1/0/38 Desg FWD 4 128.38 P2p Edge
Gi1/0/40 Desg FWD 4 128.40 P2p Edge
Gi1/0/47 Desg FWD 4 128.47 P2p Edge
Gi1/0/48 Desg FWD 4 128.48 P2p
Po1 Desg FWD 3 128.488 P2p
Po2 Desg FWD 3 128.496 P2p
Gi2/0/3 Desg FWD 19 128.57 P2p
Gi2/0/4 Desg FWD 4 128.58 P2p
Gi2/0/5 Desg FWD 4 128.59 P2p
Gi2/0/6 Desg FWD 4 128.60 P2p
Gi2/0/13 Desg FWD 4 128.67 P2p
Gi2/0/14 Desg FWD 19 128.68 P2p
Gi2/0/16 Desg FWD 19 128.70 P2p
Gi2/0/18 Desg FWD 19 128.72 P2p
Gi2/0/20 Desg FWD 19 128.74 P2p
Gi2/0/22 Desg FWD 19 128.76 P2p
Gi2/0/24 Desg FWD 19 128.78 P2p
Gi2/0/26 Desg FWD 4 128.80 P2p
Gi2/0/32 Desg FWD 4 128.86 P2p
Gi2/0/38 Desg FWD 4 128.92 P2p
Gi2/0/40 Desg FWD 19 128.94 P2p Edge
Gi2/0/43 Desg FWD 4 128.97 P2p
Gi3/0/3 Desg FWD 19 128.111 P2p
Gi3/0/8 Desg FWD 19 128.116 P2p
Gi3/0/16 Desg FWD 19 128.124 P2p
Gi3/0/18 Desg FWD 19 128.126 Shr
Gi3/0/26 Desg FWD 19 128.134 P2p
Gi3/0/28 Desg FWD 19 128.136 P2p
Gi3/0/30 Desg FWD 4 128.138 P2p
Gi3/0/31 Desg FWD 19 128.139 P2p
Gi3/0/34 Desg FWD 4 128.142 P2p
Gi3/0/36 Desg FWD 19 128.144 P2p
Gi3/0/38 Desg FWD 4 128.146 P2p
Gi3/0/43 Desg FWD 4 128.151 P2p
Gi4/0/3 Desg FWD 19 128.165 P2p
Gi4/0/4 Desg FWD 19 128.166 Shr
Gi4/0/16 Desg FWD 4 128.178 P2p Edge
Gi4/0/18 Desg FWD 4 128.180 P2p
Gi4/0/20 Desg FWD 4 128.182 P2p
Gi4/0/22 Desg FWD 19 128.184 P2p
Gi4/0/24 Desg FWD 19 128.186 P2p
Gi4/0/26 Desg FWD 19 128.188 P2p
Gi4/0/30 Desg FWD 4 128.192 P2p Edge
Gi4/0/32 Desg FWD 4 128.194 P2p
Gi4/0/36 Desg FWD 4 128.198 P2p
Gi4/0/38 Desg FWD 4 128.200 P2p
Gi4/0/44 Desg FWD 4 128.206 P2p Edge
Gi4/0/46 Desg FWD 4 128.208 P2p Edge
Gi5/0/2 Desg FWD 19 128.218 P2p
Gi5/0/3 Desg FWD 19 128.219 P2p
Gi5/0/6 Desg FWD 4 128.222 P2p
Gi5/0/9 Desg FWD 19 128.225 P2p
Gi5/0/10 Desg FWD 4 128.226 P2p
Gi5/0/12 Desg FWD 4 128.228 P2p
Gi5/0/14 Desg FWD 4 128.230 P2p
Gi5/0/16 Desg FWD 4 128.232 P2p
Gi5/0/18 Desg FWD 19 128.234 P2p
Gi5/0/20 Desg FWD 19 128.236 P2p
Gi5/0/22 Desg FWD 4 128.238 P2p
Gi5/0/28 Desg FWD 4 128.244 P2p
Gi5/0/30 Desg FWD 4 128.246 P2p Edge
Gi5/0/32 Desg FWD 4 128.248 P2p
Gi5/0/34 Desg FWD 19 128.250 P2p
Gi5/0/36 Desg FWD 19 128.252 P2p
Gi5/0/44 Desg FWD 4 128.260 P2p Edge
Gi5/0/46 Desg FWD 4 128.262 P2p Edge
Gi5/0/48 Desg FWD 4 128.264 P2p

VLAN0007
Spanning tree enabled protocol ieee
Root ID Priority 32775
Address 0007.7db1.dd00
This bridge is the root
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec

Bridge ID Priority 32775 (priority 32768 sys-id-ext 7)
Address 0007.7db1.dd00
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300 sec

Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------
Gi1/0/9 Desg FWD 4 128.9 P2p
Gi2/0/9 Desg FWD 4 128.63 P2p
Gi3/0/31 Desg FWD 19 128.139 P2p

VLAN0009
Spanning tree enabled protocol ieee
Root ID Priority 32777
Address 0007.7db1.dd00
This bridge is the root
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec

Bridge ID Priority 32777 (priority 32768 sys-id-ext 9)
Address 0007.7db1.dd00
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300 sec

Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------
Gi1/0/8 Desg FWD 4 128.8 P2p
Gi1/0/13 Desg FWD 4 128.13 P2p
Gi2/0/8 Desg FWD 4 128.62 P2p
Gi2/0/13 Desg FWD 4 128.67 P2p
Gi2/0/38 Desg FWD 4 128.92 P2p
Gi2/0/43 Desg FWD 4 128.97 P2p
Gi3/0/7 Desg FWD 19 128.115 P2p
Gi3/0/31 Desg FWD 19 128.139 P2p
Gi3/0/34 Desg FWD 4 128.142 P2p
Gi3/0/38 Desg FWD 4 128.146 P2p
Gi3/0/43 Desg FWD 4 128.151 P2p
Gi4/0/17 Desg FWD 4 128.179 P2p
Gi4/0/31 Desg FWD 4 128.193 P2p
Gi4/0/38 Desg FWD 4 128.200 P2p
Gi5/0/9 Desg FWD 19 128.225 P2p
Gi5/0/31 Desg FWD 4 128.247 P2p
Gi5/0/33 Desg FWD 19 128.249 P2p
Gi5/0/35 Desg FWD 19 128.251 P2p Edge

VLAN0055
Spanning tree enabled protocol ieee
Root ID Priority 32823
Address 0007.7db1.dd00
This bridge is the root
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec

Bridge ID Priority 32823 (priority 32768 sys-id-ext 55)
Address 0007.7db1.dd00
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300 sec

Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------
Gi1/0/37 Desg FWD 4 128.37 P2p Edge
Gi2/0/28 Desg FWD 19 128.82 P2p
Gi3/0/31 Desg FWD 19 128.139 P2p
Gi4/0/13 Desg FWD 4 128.175 P2p
Gi4/0/23 Desg FWD 19 128.185 P2p Edge
Gi5/0/19 Desg FWD 19 128.235 P2p Edge
Gi5/0/21 Desg FWD 19 128.237 P2p

VLAN0172
Spanning tree enabled protocol ieee
Root ID Priority 32940
Address 0007.7db1.dd00
This bridge is the root
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec

Bridge ID Priority 32940 (priority 32768 sys-id-ext 172)
Address 0007.7db1.dd00
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300 sec

Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------
Po20 Desg FWD 3 128.640 P2p
Po21 Desg FWD 3 128.648 P2p
Po22 Desg FWD 3 128.656 P2p
Po23 Desg FWD 3 128.664 P2p
Gi2/0/44 Desg FWD 4 128.98 P2p Edge
Gi3/0/31 Desg FWD 19 128.139 P2p
Gi3/0/32 Desg FWD 4 128.140 P2p
Gi3/0/44 Desg FWD 4 128.152 P2p Edge
Gi4/0/40 Desg FWD 4 128.202 P2p

VLAN0200
Spanning tree enabled protocol ieee
Root ID Priority 32968
Address 0007.7db1.dd00
This bridge is the root
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec

Bridge ID Priority 32968 (priority 32768 sys-id-ext 200)
Address 0007.7db1.dd00
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300 sec

Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------
Gi1/0/25 Desg FWD 4 128.25 P2p
Gi1/0/27 Desg FWD 4 128.27 P2p
Gi1/0/29 Desg FWD 4 128.29 P2p
Gi3/0/31 Desg FWD 19 128.139 P2p
Gi5/0/11 Desg FWD 4 128.227 P2p
Gi5/0/13 Desg FWD 4 128.229 P2p
Gi5/0/15 Desg FWD 4 128.231 P2p

==============================================