IT Answers » Throughput

Determining maximum throughput for WAN & LAN interfaces

NewnanIT — Thu, 14 Oct 2010 16:31:55 +0000

How can I determine what the maximum throughput is for the wan and lan interfaces on our Sonicwall pro 3060? How can I stress test it and see numbers? Our Internet line is 100MBits but we have never gone over using 39.75Mbits so I wonder if we can?

Layer 2 Ethernet throughput

Lynjay — Tue, 24 Aug 2010 06:01:49 +0000

We have 2 sites. Point A and point B. Point A has a 100M ethernet line on a 100M port and point B has a logically 20M line seating on a 100M port.

Telco providers use traffic shaping to logically set the bandwidth on their L2 device at their nearest office from point B. We have multiple circuits with this telco and they are using the same vlan within the telco NW side. From our side, we set our own vlan between our cisco devices at both point A and point B. All our traffic are transparent to the telco including our vlan tags. When we conducted our regular TCP test from server to server, it failed. We were not getting the expected bandwidth.From point A to point B, it was good but from point B to point A, we were getting only about 2M. The telco insist their comittment is up to L2, they have conducted throughput test sending 20M of frames across the wire and they were all good. But still, the issue remains on the same on our side, we’ve also tried traffic shaping on our side. From the telco perspective, they just prepare the road, and they let us drive whatever car we want.

Any ideas or suggestions what could be causing this or has anyone experienced this kind of issue before?We use iperf for testing.

Thanks

Benefits of VLANs?

ITKE — Mon, 16 Aug 2010 14:45:58 +0000

Question Edited by RichardCooper

Device throughput

Nirav — Fri, 23 Apr 2010 14:05:30 +0000

How can one calculate the maximum throughput a hardware can manage? If my appliance consists of 20 Gbps ports what is the maximum throughput I can get out of it?

Calculating minimum throughput of a link

NetworkingATE — Tue, 02 Jun 2009 14:49:45 +0000

What might be the minimum throughput in case of 34Mbps Ethernet circuit?

Throughput calculator for all the SAN subsystem?

GuruBhai — Fri, 06 Feb 2009 09:43:47 +0000

I was searching for a long time for a simple tool which can tell us the controller throughput of any SAN environment. Its necessary for every Storage engineer to have this utility to cross verify the subsystem we buy. Ofcourse the vendor will have the tool or LAB benchmark for the same. But those will work on the connected environments – I mean the san subsystem connected with multiple nodes with File system etc. Instead of that we should have a tool which helps us to find out the exact back end performance of the controller. Even its single or dual on SAN path. Does anyone have any idea on the same. Incase of more clarification let me know. We can discuss further and we can create something new for the storage industry. What say?

-Guru

How to derive bandwidth from the frequency of Cat6 cables

NetworkingATE — Fri, 10 Oct 2008 17:12:36 +0000

How do you derive bandwidth (bits per second) from the frequency of Cat6 cable (250MHz for example)? It is known that Cat6 can carry up to 1 Gbps.

Network speed slow down over distance and time – Upgrades needed? (REVISED)

erin0201 — Wed, 24 Sep 2008 12:35:46 +0000

Question Edited by jgranzow

What formula do I use to calculate file transfers across a T1?

Rvp — Mon, 31 Mar 2008 21:37:58 +0000

I have a site that is 70ms away. What formula do I use to calculate throughput for different file sizes? Thanks