I have a large non-Cisco switch (Layer 3 capable) that is that operates at the core/distribution layer with about 55 other switches connected to it. I have about 3000 users spread across a Campus area network and currently we only have 6 VLANS. The VLANS are not created with any logical since and 2 of the VLANS hold about 80% of the users.
I have proposed to create about 20 VLANs and include membership by location (basically VLAN 1,2, or 3 of the access layer switches based on building location).
Also for your information, basically a M$oft network with a few Novell systems, most locations are on modems/4wire circuits, most of our traffic is web related and email. I got half a class B subnet (30000 IP address), we use DHCP and I was going to give each vlan its on sub net (i.e. VLAN 4, 10.10.4.1-254, VLAN 5 10.10.5.1-254) and create a DHCP scope for each VLAN (i.e. 10.10.4.1 as the gateway, 10.10.4.2-10 Servers, 10.10.4.11-30 printers, 10.10.4.31-54 static workstations, 55-254 DHCP address)
So now management wants to know how does the increased VLANs affect the switch (processors, latency, packet loss) they feel that to many VLANS will swamp the switch and slow data. I told them 20 VLANS should hardly affect the switch but I would look into it.
So can anyone give me a few points to back my plan up or tell me where I need to improve it?
I have proposed to create about 20 VLANs and include membership by location (basically VLAN 1,2, or 3 of the access layer switches based on building location).
Also for your information, basically a M$oft network with a few Novell systems, most locations are on modems/4wire circuits, most of our traffic is web related and email. I got half a class B subnet (30000 IP address), we use DHCP and I was going to give each vlan its on sub net (i.e. VLAN 4, 10.10.4.1-254, VLAN 5 10.10.5.1-254) and create a DHCP scope for each VLAN (i.e. 10.10.4.1 as the gateway, 10.10.4.2-10 Servers, 10.10.4.11-30 printers, 10.10.4.31-54 static workstations, 55-254 DHCP address)
So now management wants to know how does the increased VLANs affect the switch (processors, latency, packet loss) they feel that to many VLANS will swamp the switch and slow data. I told them 20 VLANS should hardly affect the switch but I would look into it.
So can anyone give me a few points to back my plan up or tell me where I need to improve it?