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635 posts

Ultimate Geek
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Topic # 113956 2-Feb-2013 21:15
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Hi All,

I hope someone here can help.

I have a Cisco SRP521W Router which is connected to a Cisco SR2024 managed switch.

All the stuff on my local network is on a 192.168.15.0 subnet for data and there is a voice VLAN configured in the SRP521W for voice on 192.168.16.0.

Quite a few times lately I have had to configure various other network equipment to work on the common 192.168.1.0 subnet.

I was wondering if I can create a VLAN on say 4 of my switch ports for 192.168.1.0 for configuring this gear for the 192.168.1.0 subnet?

If so, then this is where I have a knowledge gap.

Im picking I have to create the VLAN in the router with its own DHCP service?

What do I have to do at the switch side of things?

I see they talk about a VLAN ID, which is a number, is there any standard for the numbers I need to follow? (100 seems to be used a lot for voice)

When I go to configure this gear can I do it from my PC on 192.16.15.101 or do I need to plug into one of the ports assigned to the 192.168.1.0 VLAN?

Cheers

-Al



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4373 posts

Uber Geek
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  Reply # 754993 3-Feb-2013 11:09
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Do you need to create a separate vlan for the 192.168.1.0 subnet, or do you want to just re-number your existing 192.168.15.0 subnet?

The second is far easier (if that would work), but the first is quite doable also.

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  Reply # 755002 3-Feb-2013 11:46
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So 192.168.1.0/24 is a 3rd subnet for random equipment etc.?

You have a couple of options. One and probably best tehcnically would be to set all the ports in the relevant VLANs on your switch and then nominate one port that will connect to your router. Put that port into Trunk mode and then add your 3 VLANs as tagged into that port. Then on your router set one of its ports to trunk mode to take the VLANs in.

After working with a Cisco SRP527 the other day I think it may struggle with a VLAN trunk in which case it may be easier to set one NIC on the Cisco router each to each of the VLANs then plug them into untag ports on the switch. It means you waste 3 switch ports rather than 1 for router uplink but may be easier.

My suggestion would be to dump the Cisco router and use something like PFsense or Mikrotik where this type of thing is muuuch easier. I ended up throwing the SRP527 out and replacing with PFsense on a $20 PC which is 10x faster and so much easier to get working.





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