How to connect 350 systems using class C address?

[kumaran]

Hi all,:)
I really stuck up with this problem!!!
pls help me!!!:(

I'm having 350 systems, to be connected in a single network and i'm having a class C Address of 192.168.1. series. But using this i can able to connect only 254 systems.

how to connect the remaining systems with this network.
One more thing is that, all this system in need of internet service. And my gateway is 192.168.1.1

How can i accomplish this???:confused:

Help me please!!!!

[avinash]

Dear Kumaran,

You will have to use two summarized networks 192.168.0.0 & 192.168.1.0 with the subnet mask 255.255.254.0. This will give you 510 host.

Host range : 192.168.0.1 to 192.168.1.254
subnet mask: 255.255.254.0 (every host should have this subnet mask including gateway).

Hope this will solve your problem.

A.

[lammle]

I suppose you can fix it with summarizing, but I wouldn't suggest it because of latency issues regarding such a large broadcast domain.

Cisco makes router ports. This is what they do best.

You should get a router with two router ports and break up the broadcast domains into seperate subnets.

Or, you can use switches with VLAN's and use the router to route between the subnets (again, creating multiple subnets).

Either way, think about broadcast domains. You don't want them larger then say 100 hosts...so, I'd get some good switches and make three VLANs (three subnets)...

Read my switching and VLAN chapters and this will help you accomplish this.

Good luck!
Todd Lammle

[muddyfox1009]

I agree (not that I'm such an expert on this).

I have 100 users on my network and I already used 5 switches (all tied to a gateway router). That's before I started to read Lammle's book. Soon, I will tear them out and get a better layer 4 switches plus one or two routers (just come in to the market), yes, I might be mistaken, but I'm sure they were layer 4. Will get the details if requested. If not, I'll try to post anyway. The amount of traffic caused by 100 is just too much fo a single domain.

[dbeare]

I'm guessing that you meant layer 3 switches, not layer 4 switches. Depending on your future expansion, I would think that you would be able to use a 2800 series router along with some switches and be fine for 100 hosts and in a good position for future expansion.

[muddyfox1009]

Hi dbeare,
I've no say in this switch, it's coming down from the top.

It's a HP Procurve 2900-48G, and it says :
Layer 4 prioritization: enables prioritization based on TCP/UDP port numbers

How that going to affect me, I'm yet to find out. I could have wrongly interpret this however.

[dbeare]

I'm pretty sure that it simply means you can set up QoS at layer 4, but packets are still routed via layer 3 and forwarded at layer 2. I read through the specs for that switch and it sounds like a layer 3 switch to me.

[lammle]

A lot of switches can provide some type of layer 4 services, like access lists, for TCP or UDP, but they are still considered either layer 2 or layer 3 services based on how they filter the network (layer 3 would segment the network with logical addressing and layer 2 switches segment the network with hardware addressing).
Cheers!
Todd Lammle