Distribution Layer Necessary?

[jaredo_1]

Looking at the core1 config (core2 mirrors this with slight differences in priorities and vrrp states):

hostname "CORE1"
module 1 type J86xxA
trunk 1-4 Trk1 Trunk
trunk 5-8 Trk2 Trunk
trunk 9-12 Trk3 Trunk
ip routing
vlan 1
name "DEFAULT_VLAN"
untagged 13-18,21-24
ip address 10.10.0.1 255.255.255.0
tagged Trk1-Trk3
no untagged 19-20
exit
vlan 10
name "Servers"
untagged 20
ip address 10.10.10.1 255.255.255.0
tagged Trk1-Trk3
exit
vlan 30
name "Printers"
ip address 10.10.30.2 255.255.255.0
tagged Trk1-Trk3
exit
vlan 100
name "DownstairsOB"
untagged 19
ip address 10.10.100.2 255.255.255.0
tagged Trk1-Trk3
exit
vlan 101
name "UpstairsOB"
ip address 10.10.101.2 255.255.255.0
tagged Trk1-Trk3
exit
vlan 200
name "Warehouse"
ip address 10.10.200.2 255.255.255.0
tagged Trk1-Trk3
exit
vlan 20
name "Reserved"
no ip address
exit
ip route 0.0.0.0 0.0.0.0 10.10.0.250
router rip
no auto-summary
exit
router vrrp
snmp-server community "public" unrestricted
spanning-tree
spanning-tree Trk1 priority 4
spanning-tree Trk2 priority 4
spanning-tree Trk3 priority 4
spanning-tree config-name "mstp"
spanning-tree config-revision 1
spanning-tree instance 1 vlan 1 10 20
spanning-tree instance 1 priority 0
spanning-tree instance 1 Trk1 priority 4
spanning-tree instance 1 Trk2 priority 4
spanning-tree instance 1 Trk3 priority 4
spanning-tree instance 2 vlan 30 100 101 200
spanning-tree instance 2 priority 1
spanning-tree instance 2 Trk1 priority 4
spanning-tree instance 2 Trk2 priority 4
spanning-tree instance 2 Trk3 priority 4
spanning-tree priority 0
vlan 1
vrrp vrid 1
owner
virtual-ip-address 10.10.0.1 255.255.255.0
priority 255
enable
exit
exit
vlan 10
ip rip 10.10.10.1
vrrp vrid 1
owner
virtual-ip-address 10.10.10.1 255.255.255.0
priority 255
enable
exit
exit
vlan 30
vrrp vrid 1
backup
virtual-ip-address 10.10.30.1 255.255.255.0
enable
exit
exit
vlan 100
vrrp vrid 1
backup
virtual-ip-address 10.10.100.1 255.255.255.0
enable
exit
exit
vlan 101
vrrp vrid 1
backup
virtual-ip-address 10.10.101.1 255.255.255.0
enable
exit
exit
vlan 200
vrrp vrid 1
backup
virtual-ip-address 10.10.200.1 255.255.255.0
enable
exit
exit



I noticed each spanning-tree instance assigns individual priorities to the trunks as well, does the priorities on the instance 1 trunks need to be adjusted at all so that the priorities are higher (less) than instance 0? Or does the overall higher priority of instance 1 really all that matters?

[jaredo_1]

Sorry, mean instance 1 & 2 not 0 & 1.