D-Link Gigabit 5 Port Switch $29.99 In Store after $20 MIR

[blckgrffn]

Link

In store, it was marked 29.99 after 20 MIR. I picked it up and have the MIR form, so the deal seems to be good. Rebate is valid from 4/1/05 to 5/31/05 according to receipt.

$40 seems to be about as little as I kind find on a gigabit switch online, so this deal seems warm.

Sorry is this is a repost!

Nat

 

[Devistater]

Seems like a decent deal to me

 

[superHARD]

mir linky?

 

[Odeen]

Does it support jumbo frames?

 

[BoKingWen]

Originally posted by: Odeen
Does it support jumbo frames?

The product spec page in D-Link did not mention jumbo frames so I guess no.

linky

 

[blckgrffn]

The rebate form is printed on the receipt.

Mine seems to be working fine, I only have one PC with Gigabit NIC hooked up to it right now, so no real performance story to tell....

Nat

 

[Devistater]

Originally posted by: BoKingWen

Originally posted by: Odeen
Does it support jumbo frames?

The product spec page in D-Link did not mention jumbo frames so I guess no.

linky

Isn't jumbo frames just a larger packet (i.e. less percentage overhead because more information sent under one IP header)? If that's so, of course this would support it. It just forwards the packet.

 

[V00D00]

Under Stats on that site:
1000Mbps-1,488,100pps

1488100/ 1000 = 148.81 packets per megabyte ??? how big are these jumbo frames? divide it out per megabyte, see if it's the same..

It also has a 4k MAC address table, so it can go pretty deep in terms of a switch, 4,000 bytes at 48 bytes per MAC = 83.3 addresses. That doesn't seem to bad either.

 

[mfriedkin]

Unfortunately, unless the hardware and firmware is developed to support Jumbo Frames, a switch will not handle the 9K size packets. Thus it will not forward the frame at all.

It takes hardware buffers at the least the size of the largest packet, in Jumbo Frames case that would be 9K in size, versus the 1500+, (depending on standards it supports), that a normal switch can handle.

Also, why worry about Jumbo Frames ? Only the most high-end NIC cards can handle Jumbo Frames. These are usually ones put in large server implementations. Not in everyday home PC's.

 

[mfriedkin]

V00D00 said:

"Under Stats on that site:
1000Mbps-1,488,100pps

1488100/ 1000 = 148.81 packets per megabyte ??? how big are these jumbo
frames? divide it out per megabyte, see if it's the same..

It also has a 4k MAC address table, so it can go pretty deep in terms of a switch,
4,000 bytes at 48 bytes per MAC = 83.3 addresses. That doesn't seem to bad either. "


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1,488,100 packets per second is the theoretical maximum number of 64 byte packets that a Gigabit link can pass in one second at Wirespeed. This can be measured many different ways, so is not really an indicator of a good switch.

The 1000Mbps you allude to is really megaBITS not megaBYTES. Big difference.

Jumbo Frames is usually, according to the IEEE standard, 9,000 bytes. Many switch vendors use different sizes, depending on the hardware limitations they have in their switching hardware. It is usually only implemented in high-end server platforms or from switch to switch, also usually in the core switches and uplinks only.

Also, the 4k MAC address table refers to 4,092 individual MAC addresses in the forwarding address table, not a forwarding address table 4,092 bytes in size as you indicate.

Also, an ethernet MAc address is only 6 BYTES in size, not 48 bytes as you have reported.

A 4k MAC address table is pretty good, but standard for most little switches today.

A Golden Member should try to provide correct information, or none at all.

 

[Octave]

Ya, no jumbo frames for you...although that woudl be nice for that price. But still, good switch. If you insist on jumbo frames, the cheapest i can find are these guys from newegg.
http://www2.newegg.com/Product/Product.asp?Item=N82E16833129012
http://www2.newegg.com/Product/Product.asp?Item=N82E16833129013
depending on how many ports you need.