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October 30th, 2003 14:00
VLAN Problems 3024 + 5212
I am a NOOB at this but bear with me and see if you can help me at all....
I have two (2) switches a 3024 with 2 GBIC modules and a 5212
I have two (2) subnets 146.145.11.X and 10.0.0.X
I have two buildings one has the 5212 and one has the 3024
Basically in a nutshell i am trying to seperate the two subnets on the same switch understand?
half the 3024 will be 10.0.0.x and the other half will be 146.145.11.X
half the 5212 will be 146.145.11.X and Half will be 10.0.0.X
i need it so while on a port configured for 10.0.0.x (internal Network ) you cannot ping 146.145.11.X
and while in a port configured for 146.145.11.X (external NEtwork ) you cannot ping 10.0.0.x
i have been playing with vlans but i cannot get it to work properly to accomplish my goal.. can someone please help me ASAP!
thanks.. Dan
GregG1
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October 30th, 2003 17:00
This is a pretty basic configuration for VLANs. You would want to do the following:
On the switches, create your 2 VLANs (I'll use VLAN 10 for the 10.x network and VLAN 146 for the 146.x network).
For the 3024 example, we'll use ports 1-12 for VLAN 10, 13-24 for VLAN 146, and 25 for the uplink between the two switches.
For the 5212, we'll use ports 1-12 for VLAN 10, 13-23 for VLAN 146, and 24 for the uplink.
With this configuration, systems on VLAN 10 should only communicate with VLAN 10 and systems on VLAN 146 should only communicate with VLAN 146.
If you want to manage the switches, you will need to configure a port as untagged on VLAN 1 with a PVID of 1. The mangement VLAN cannot be changed from VLAN 1 on the 3024, so I would leave the ip address on the 5212 bound to VLAN 1 as well.
coome
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October 31st, 2003 17:00
GregG,
What you said may be correct. But, then two vlans have to share one gigabit port between two switches. If both vlan want 1Gb/s throughput, what are you going to do?
wazntme
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October 31st, 2003 18:00
well greg is incorrect on a couple of things a 5212 is a twelve port gigabit switch... so what he said really does not fit what i have.. and setup the way he told me to the 3024 blocks the port the 5212 is connecting too whenever i plug it in and cannot figure out why...
GregG1
2 Intern
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812 Posts
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November 4th, 2003 11:00
I apologize for the confusion on the ports. I started out with an example of a 5212, but began describing how to configure a 5224. The same configuration would work for a 5212, you would just need to change the port numbers.
As for the question about a dedicated 1Gb uplink per VLAN, this is not something that can be acheived using these switches. To achieve this, you would need a separate uplink for each VLAN. As the switches use a per-bridge spanning tree, multiple uplinks to the same switch will be blocked to prevent bridging loops. If your bandwidth utilization on the single uplink is creating a bottleneck, you could create a link aggregation group (port trunk) between the two switches to increase your total bandwidth available.