06-07-2011 07:40 AM - edited 03-07-2019 12:41 AM
hi! we've a few 3560 sw that run on flat network. Here's the config on one of the switch. Can i create another vlan eg. vlan10 in this switch as a backup vlan? I do not wish to add more vlans except the backup vlan10 and vlan10 do not need to be routable. The current clients shd still run on flat network (eg. in gi0/47). Will adding vlan10 in some of the unused ports affect the current operation? Thanks.
!
interface GigabitEthernet0/47
switchport mode access
spanning-tree portfast
!
interface GigabitEthernet0/48
switchport mode access
spanning-tree portfast
!
interface GigabitEthernet0/49
switchport trunk encapsulation dot1q
switchport mode trunk
channel-group 1 mode desirable
!
interface GigabitEthernet0/50
switchport trunk encapsulation dot1q
switchport mode trunk
channel-group 1 mode desirable
!
interface GigabitEthernet0/51
!
interface GigabitEthernet0/52
!
interface Vlan1
ip address 10.20.50.6 255.255.255.0
!
ip default-gateway 10.20.50.1
06-07-2011 07:48 AM
What do you mean by "backup vlan"?
Basically, adding a new vlan will not affect current users.
06-07-2011 07:49 AM
No ti wouldn't affect current operation.
So to create vlan 10 at L2 -
3560(config) vlan 10 name v10
this will now allow you to allocate ports into vlan 10 eg.
int gi0/10
switchport mode access
switchport access vlan 10
Jon
06-07-2011 07:58 AM
If you dont want this vlan to be routable, do not create interface vlan 10. PC's in vlan 10 will only see each other, but will not communicate with vlan1
06-09-2011 09:41 AM
hi! The objective is to use a different IP range and vlan for my servers to run backup job. Each additional NIC card in my servers will be assign a different IP range which is different from my production ip range. Will this work. Thanks.
06-10-2011 03:16 AM
Will this work.
Yes
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