Question

How to VLANs on a Dell PowerConnect 2708 switch

Asked by: Kaptain1

Hi Experts!

I got a Dell PowerConnect 2708 switch w/ 8 gigabit ports. My goal is to split 1 LAN into 2 using VLANS for performance and security reasons - so that hosts on both VLANS can access the Internet/gateway, but can't see nor access each other.

I can log-in to the Dell GUI web interface, but after spending about 2 hours trying and reading the manual, I wasn't able to accomplish what I want.

Here's the GUI options:

VLAN membership page - lets you select/create VLANS, and select which Interaces "Tag egress packets", or "Untag egress packets", there's also a "blank" option - which is "not a member".

=====================

VLAN Port Settings:
Lets you select interfaces individually and configure options for them (8 ports), lets you set PVID (1-4095)
Frame Type - (Adming All, or Admit Tag Only)
Ingress Filtering - (Enable, or Disable)

LAG Group (1-5 values) - I believe this is for making several links into 1 for balance load and redundancy. I'm not interested in this one...

========================

LAG Membership
Ports 1-8 (can add interfaces into a membership...)

=======================

Then there're CoS and DSCP Settings. Not sure what these are for.


Please advise.

I'm kinda sad because I just completed 3rd CCNA course (Switching) and can do VLANS on a Cisco switch, but this Dell one which supposed to be easier to use give me trouble! :(

Thanks in advance!

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Asked On
2009-03-14 at 21:05:54ID24231188
Topics

Network Switches & Hubs

,

Network Routers

,

Networking Hardware Firewalls

Participating Experts
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Comments
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Answers

 

by: cstosgalePosted on 2009-03-15 at 03:07:00ID: 23890433

You will want to set the first 4 ports to be untagged in one vlan, and the second 4 untagged in the second vlan.

I suspect this is jsut a layer 2 switch, so you will also need a router to route between the vlans. Either plug two interfaces into the router, one "untagged" in each vlan, or create a trunk port by setting all vlans as "tagged" on a single port.

Unfortunately other manufacturer's switches tend to look at things differently to a Cisco, namely that a port is either untagged or tagged for a specific vlan. If it is untagged, it is an access port for that vlan, and if it is tagged, that vlan will form part of a trunk. The terminology comes from the fact that on a trunk port, packets are "tagged" for their specific vlan and on an access port the packets are not tagged with 802.1q information.

 

by: Kaptain1Posted on 2009-03-15 at 12:29:53ID: 23892745

Thanks for replying! I think that I may have some challenges then... I can't put in more NICs into my gateway server b/c there's no more slots left, therefore (all taken up by loadbalancing 3 DSL lines), therefore I can't have 1 interface for every subnet / vlan. That means I'll have to go with the Subinterfaces approach?

1. How do I do subinterfaces on a PC NIC that's used for routing?

2. Do i need to buy a Trunk NIC for my router then? (I use PC as a gateway/firewall for my LAN)

Thanks for your help!

 

by: Kaptain1Posted on 2009-04-22 at 19:56:34ID: 24211473

Anyone? I'm still having this problem.

Thanks!

 

by: cstosgalePosted on 2009-04-23 at 11:38:30ID: 24218349

Whether you can configure your nic as a trunk will depend on drivers / the operating system you are using.

In windows, most Intel nics for example will allow you to configure vlans in the properties of the adapter, if you install the drivers from the intel website. This will effectively turn your nic into a trunk port. It will create multiple virtual adapters in windows you can then assign IP addresses to.

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