General discussion
September 27, 2006 at 03:47 AM
chrys vat

medium network re-design

by chrys vat . Updated 18 years, 9 months ago

Situation
We have a 40 users Gigabit network: 4 servers, 70 PCs, 4 MACs, 10 net printers, 512/256 sat Internet. A fibre backbone, one central D-Link DGS1224T, another DGS1224T, DGS1216T, Planet (unmanaged) (via fibre, daisy chain), another 3 of 16 unmanaged Gigabit D-Link, two Catalyst WS-C2950-24, and a few 100Mb switches on a 4 layer network. The activities are: public relations, accounting, desktop publishing, civil and mechanical/electrical engineering. We use database and file server, all run Windows (XP&2003). About 15 POP3 clients of external ISP and about 7 web users. Two servers and about 25 clients have Gigabit. In the future through the network will connect electrical/caloric analyzers, BMS, anti fire systems. We cannot return to 100Mb. We need first of all a trusty network.
Problem
The (web) managed D-Link switches, first stop response the interface (and the ping), after a while (days) parts of the network stop working. Only a power off/on cycle of the affected switches can establish the connections. We cannot find the cause. There may be faulty cables? The broadcast is about 17%, no multicast, little errors on the central switch. A D-Link support said the MAC table overfills.
Question:
I’m thinking to buy a 44+4 (fibre) Gigabit managed central switch and use with one Catalyst for the most part of the network in a two layers switch network. The fibre connections will be star topology and connect a few long distance workstations and devices. Also will be able to find any wire problems since every workstation will be connected directly to a managed switch (in the present is not the case). I choose Linksys SRW2048 (for the price, we cannot go with Cicso like or HP like). I would prefer Dell, but didn’t find 44+4 Gigabit.
I’m asking your opinion for this and any other suggestions. The MAC table of the Linksys has the same size of the present central D-Link, really can overflow? Is Linksys a good choice for our case?

Thanks in advance.

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