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Trunking 2 x Netgear GS748T switches

post #1 of 9
Thread Starter 
Has anyone trunked 2 of these switches successfully?

Please help - I have bought 2 of these and cannot get the trunking to work. If possible, can someone please give me a guide as to how to get trunking to work on these switches?

TVM2ALL
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post #2 of 9
Quote:
Originally Posted by douglash View Post
Has anyone trunked 2 of these switches successfully?

Please help - I have bought 2 of these and cannot get the trunking to work. If possible, can someone please give me a guide as to how to get trunking to work on these switches?

TVM2ALL
1) are these managed or unmanaged switches
2) define what you mean by trunking.

True trunking is accomplished using managed switches (they have software on them and you can setup routing rules like on a router, but less in depth) and they're generally connected via a serial cable. if all you're trying to do is "add LAN ports" to your network by hooking up these switches they should plug and play easily. The first switch will hook up from it's uplink port to your router. The 2nd switch will hook up from any port other than uplink, to the other switch on any port other than uplink. Give that a whirl, let me know if it works for ya
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post #3 of 9
If by trunking you mean setting up 802.1Q trunks between them to exchange VLAN traffic between them, I have done it @ work with GSM7248 managed switches, using the fiber optic ports and the 1000BaseT ethernets as well...
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post #4 of 9
Thread Starter 
1) They are managed switches
2) By trunking I am meaning to be able to double the bandwidth between 2 of these switches.

Basically, we have 2 of these switches, and we need to connect them via a backbone, it will just be CAT6 cable as fiber is too expensive at the moment, then those switches will be used for gamers to connect to.

Interswitch traffic will be almost unlimited, but traffic between gamers on different switches will be limited, therefore we want to trunk the 2 to gain bandwidth...

sorry for not explaining this better in the first place...

so, would i need to create a VLAN first then assign the specific ports i want to trunk to the VLAN or can i just trunk them? i read it's called Link Aggregation Group...
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post #5 of 9
Ahh OK. I see what you mean.

If you want to double the bw between the switches, you will need to use more interswitch links.... yes, they're call lag groups. For example, you can set 4 CAT5/CAT6 links to be in the same lag group, and the more links you add to that lag group, the higher the connection...

I dont have the commands off the top of my head, but yes, basically you have to assign a VLAN to the lag group.

Are you using just access links between the switches, or using 802.1q trunking to expand VLANs between the two?
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post #6 of 9
Hey,

I found this post on google, I am trying to get vlans working across a lag interface. It seems that it works, but then when I reboot the switch it stops working unless I go into the lag interface turn off the dvlan tunnel and then turn it back on. Can you give me an example of your config so I can see if I am doing something wrong?
post #7 of 9
Squeaky that sounds like a firmware issue to me... Have you upgraded recently?
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post #8 of 9
Yeah, they are all running the latest firmware. I have tried Netgear support and they are less than helpful.
post #9 of 9
Can you downgrade the firmware to a previous revision?
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