I have configured 2 x 3750G-12S switches as core/distribution switches. I have configured 8 vlans 10,20,30,40,50,60,70,100
and have created SVI interfaces for them all.
I have PVST running and have shared the load over the 2 core/distribution switches.
vlan 10,20,30,40 root bridge Core_1
vlan 50,60,70,100 root bridge Core_2
Both of the 3750G's are linked by 2 x fibre trunks (dot1q) for redundancy.
I have also configured HSRP on each SVI over every vlan.
I have configured every vlan SVI with the command "core_1(config)#int vlan 10
core_1(config-if)#switchport trunk native vlan 10"
I have done the same on each individual vlan (please see sh run), is this correct???
If not why???
What is the Native Vlan and how should it be configured properly??
I have attached the sh runs for each 3750G switch in the core, please could you check it over for me and give me your opinion on what would be better?
I have also attached a sh run from the top switch on vlan 10, this is connected via fibre to core_1 and is the 1st of 5 in the stack. The bottom switch in the stack is connected via fibre to Core_2.
All switches are daisy chained together via copper from top to bottom and I have configured DHCP server on the top switch in most vlans switch stacks.
Please advise on the configs and any problems?
Many many thanks
first u have big mistake with the native VLANs however u have configured the switches to some extent very good
for ur knowledge the native VLAN is used for managment and it is the only vlan go on the trunk without being taged with a VLAN ID
ssu configured the access switch with all ports in vlan 10
and also u made vlan 10 as native in this case ur vlan 10 will not be taged over the trunk
what u need to do
make the native VLAN for all switches the same do it the default which should be vlan one and u se it for managment
and dont assign it to any normal access switch port
and in access switch also u dont need to make any SVI only make one for managment
so make the vlan one the native and make an SVI in the access switch for managment access linke telnet
also for DHCP
u have correctly added the spanning-tree portfast on the access ports
what u need to do
if u have deffrent IP addressing for each VLAN make deffrent DHCP scop for each VLAN within its subnet then
on each SVI on the DISTlayer switches add
ip-helper [dhcp address] command and on the dhcp config make the SVI default gateway for each corsponding vlan
SVI vlan 2 will be the default gateway for vlan 2 pool
vlan 10 will be the default gateway for vlan 10 pool
or HSRP VIP for that VLAN
and the ip helper command should be put on each ditslyer 3 switch
pointing to the DHCP IP address
or u can configure the DHCP pool on the DIST switches but in this case becase it is on the same switch u dont need ip helper command
follow these instructions and should be fine
please, if helpful Rate