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Creating minimum VLANs to accomplish reachablility
Hi GS,
If we have 4 switches. SW1 is in the centre. SW2,3,4 form trunks with SW1 only. SW1 is in transpearent mode. The other switches could be in Client/Server or transpearent (which does not really matter!). Each of 4 switches have devices belonging to some set of VLANs.
Question: Create minimum number of VLANs on SW1 to have LAN reachbility for all VLAN.
How we should address this question?
My approach is:
- Draw L2 diagram, showing VLAN end points (e.g. routers, or VLAN interfaces) that directly connected to each switch.
- Create VLANs that directly attaches to SW1 (induding VLAN for access interfaces, as well as VLAN interfaces)
- Identify VLAN that transit SW1. Create these VLANs on SW1.
- Verify LAN reachability, by doing ping tests on each VLAN segments.
This process is time-consumming for me. Is there any better approach? I heard people have shortcuts, something like temporarily turning SW1 into a VTP client, and enable VTP prunning. I am not sure exact method though.
Appreciate if you guys can share tips and trick for this task.
Cheers,
Huan
