STP for LACP Trunks at Core1, Core2 (VRRP enabled) and Edge Switches

[Surbjeet]

I am using Hp5412zl Switches at core1,core2 and Edge. Core1 switch is connected with Core2 through LACP Trunk15 and provide VRRP feature to the network. Edge switch has redundant LACP Trunks to core1 and core2 through Trunk5 and Trunk25 respectively.

As i made the trunks, it automaticlly assinged Priority4 for all the Trunks at COre and Edge switches. Is this priority4 is correct?? or we have to make priority changes according to over wish.....

Lets say i want all the traffic from Edge has to flow via core1(trunk 5) and If core1 fails let it go via core2(trunk 25).

Communication between Core1 to Core2 has to be through Trunk15.

Pls suggest......see the configuration of core1,core2 and edge.

CORE1
----------
hostname "PremiumCore01"
max-vlans 600
module 1 type J8702A
module 2 type J8702A
module 3 type J8706A
trunk C3-C4 Trk2 LACP
trunk C1-C2 Trk1 LACP
trunk A19-A20 Trk15 LACP
trunk C5-C6 Trk3 LACP
trunk C7-C8 Trk4 LACP
trunk C9-C10 Trk5 LACP
ip routing
snmp-server community "public" Unrestricted
vlan 1
name "DEFAULT_VLAN"
untagged A1-A18,Trk1-Trk5,Trk15
ip address 10.1.0.11 255.255.0.0
tagged C11-C24
no untagged A21-A24,B1-B24
exit
vlan 2
name "voice"
untagged B1-B4
ip address 10.2.0.1 255.255.0.0
tagged C11-C24
exit
vlan 3
name "cctv"
untagged B5-B8
ip address 10.3.0.1 255.255.0.0
tagged C11-C24
ip igmp high-priority-forward
exit
vlan 4
name "video"
untagged B9-B12
ip address 10.4.0.1 255.255.0.0
tagged C11-C24
ip igmp high-priority-forward
exit
vlan 5
name "ac"
untagged B13-B16
ip address 10.5.0.1 255.255.0.0
tagged C11-C24
exit
vlan 6
name "hlan"
untagged B17-B20
ip address 10.6.0.1 255.255.0.0
tagged C11-C24
exit
vlan 7
name "bms"
untagged B21-B24
ip address 10.7.0.1 255.255.0.0
tagged C11-C24
exit
vlan 8
name "pos"
untagged A21-A24
ip address 10.8.0.1 255.255.0.0
tagged C11-C24
exit
ip multicast-routing
router pim
exit
router vrrp
spanning-tree
spanning-tree Trk1 priority 4
spanning-tree Trk2 priority 4
spanning-tree Trk3 priority 4
spanning-tree Trk4 priority 4
spanning-tree Trk5 priority 4
spanning-tree Trk15 priority 4
spanning-tree priority 1 force-version RSTP-operation
vlan 1
vrrp vrid 1
owner
virtual-ip-address 10.1.0.11 255.255.0.0
priority 255
enable
exit
exit
vlan 2
vrrp vrid 2
owner
virtual-ip-address 10.2.0.1 255.255.0.0
priority 255
enable
exit
exit
vlan 3
vrrp vrid 3
owner
virtual-ip-address 10.3.0.1 255.255.0.0
priority 255
enable
exit
exit
vlan 4
vrrp vrid 4
owner
virtual-ip-address 10.4.0.1 255.255.0.0
priority 255
enable
exit
exit
vlan 5
vrrp vrid 5
owner
virtual-ip-address 10.5.0.1 255.255.0.0
priority 255
enable
exit
exit
vlan 6
vrrp vrid 6
owner
virtual-ip-address 10.6.0.1 255.255.0.0
priority 255
enable
exit
exit
vlan 7
vrrp vrid 7
owner
virtual-ip-address 10.7.0.1 255.255.0.0
priority 255
enable
exit
exit
vlan 8
vrrp vrid 8
owner
virtual-ip-address 10.8.0.1 255.255.0.0
priority 255
enable
exit
exit


-----------------------------------------------
CORE 2
-----------------------------------------------
hostname "PremiumCore02"
max-vlans 600
module 1 type J8702A
module 2 type J8702A
module 3 type J8706A
module 4 type J8702A
module 5 type J8702A
module 6 type J8702A
module 7 type J8702A
module 8 type J8702A
module 9 type J8702A
module 10 type J8702A
module 11 type J8702A
module 12 type J8702A
trunk A19-A20 Trk15 LACP
trunk C1-C2 Trk21 LACP
trunk C3-C4 Trk22 LACP
trunk C5-C6 Trk23 LACP
trunk C7-C8 Trk24 LACP
trunk C9-C10 Trk25 LACP
ip routing
snmp-server community "public" Unrestricted
vlan 1
name "DEFAULT_VLAN"
untagged A1-A18,C11-C24,D1-D24,E1-E24,F1-F24,G1-G24,H1-H24,I1-I24,J1-J24,K1-K24,L1-L24,Trk15,Trk21-Trk25
ip address 10.1.0.12 255.255.0.0
no untagged A21-A24,B1-B24
exit
vlan 2
name "voice"
untagged B1-B4
ip address 10.2.0.2 255.255.0.0
exit
vlan 3
name "cctv"
untagged B5-B8
ip address 10.3.0.2 255.255.0.0
ip igmp high-priority-forward
exit
vlan 4
name "video"
untagged B9-B12
ip address 10.4.0.2 255.255.0.0
ip igmp high-priority-forward
exit
vlan 5
name "ac"
untagged B13-B16
ip address 10.5.0.2 255.255.0.0
exit
vlan 6
name "hlan"
untagged B17-B20
ip address 10.6.0.2 255.255.0.0
exit
vlan 7
name "bms"
untagged B21-B24
ip address 10.7.0.2 255.255.0.0
exit
vlan 8
name "pos"
untagged A21-A24
ip address 10.8.0.2 255.255.0.0
exit
ip multicast-routing
router pim
exit
router vrrp
spanning-tree
spanning-tree Trk15 priority 4
spanning-tree Trk21 priority 4
spanning-tree Trk22 priority 4
spanning-tree Trk23 priority 4
spanning-tree Trk24 priority 4
spanning-tree Trk25 priority 4
spanning-tree priority 6 force-version RSTP-operation
vlan 1
vrrp vrid 1
backup
virtual-ip-address 10.1.0.11 255.255.0.0
enable
exit
exit
vlan 2
vrrp vrid 2
backup
virtual-ip-address 10.2.0.1 255.255.0.0
enable
exit
exit
vlan 3
vrrp vrid 3
backup
virtual-ip-address 10.3.0.1 255.255.0.0
enable
exit
exit
vlan 4
vrrp vrid 4
backup
virtual-ip-address 10.4.0.1 255.255.0.0
enable
exit
exit
vlan 5
vrrp vrid 5
backup
virtual-ip-address 10.5.0.1 255.255.0.0
enable
exit
exit
vlan 6
vrrp vrid 6
backup
virtual-ip-address 10.6.0.1 255.255.0.0
enable
exit
exit
vlan 7
vrrp vrid 7
backup
virtual-ip-address 10.7.0.1 255.255.0.0
enable
exit
exit
vlan 8
vrrp vrid 8
backup
virtual-ip-address 10.8.0.1 255.255.0.0
enable
exit
exit
-----------------------------------------------
EDGE SWITCH
-----------------------------------------------
hostname "FS-13"
module 1 type J8702A
module 2 type J8702A
module 3 type J8702A
module 4 type J8702A
module 5 type J8702A
module 6 type J8702A
module 7 type J8702A
module 8 type J8705A
trunk H21-H22 Trk5 LACP
trunk H23-H24 Trk25 LACP
ip routing
snmp-server community "public" Unrestricted
vlan 1
name "DEFAULT_VLAN"
untagged A1-A12,H10-H20,Trk5,Trk25
ip address 10.1.0.33 255.255.0.0
no untagged A13-A24,B1-B24,C1-C24,D1-D24,E1-E24,F1-F24,G1-G24,H1-H9
exit
vlan 2
name "voice"
untagged A13-A24,B1-B24,C1-C24,D1-D24,E1-E24,F1-F15
no ip address
exit
vlan 3
name "cctv"
untagged F16-F18
no ip address
exit
vlan 4
name "video"
untagged F19-F24,G1-G24,H1-H8
no ip address
exit
vlan 5
name "ac"
untagged H9
no ip address
exit
spanning-tree
spanning-tree Trk5 priority 4
spanning-tree Trk25 priority 4
spanning-tree force-version RSTP-operation

[Mohieddin Kharnoub]

Hi

When you create a trunk, by default it comes to priority 4.

And for your scenario i have a comment and a Suggestion:

Comment:- Without changing the Priority of any trunk, if you want all the traffic to come to Core1, then Core1 should be the ROOT of your spanning tree.

And i think in the current situation, Core1 is the Root and Core2 is backup because you assigned priority 1 to Core1, and priority 6 to Core2.

(I would prefer to use Priority0 for Core1, and Priority1 for Core2)

Suggestion:- For more efficiency and load balancing in your network you can use the MSTP, and load balance all the traffic on both Trunks connecting from the Edge to both Cores based on the Vlans.

So you don't have one Active Trunk and the other is redundant, with MSTP both will be Active.

Good Luck !!!