Wireshark · Wireshark-users: Re: [Wireshark-users] Speed Test using wireshark

[Randy Grein <randygrein@xxxxxxxxxxx>]

Hmm, yes. That is, you will not see more than 10 Mbits on the internal interface for long. Even if tcp & other protocols did not have throttling mechanisms the router would start dropping packets, in effect throttling traffic.

This is not a silly question; I have seen a number of network problems caused by trying to stuff too much traffic through a link and relying on throttling mechanisms to keep things flowing smoothly. They do, up to a point. Then critical traffic is dropped and someone gets very, very angry.

Sent from my iPhone

On Jun 20, 2011, at 4:13 PM, rajat sharma <rajat2683_2_1@xxxxxxxxx> wrote:

HI All,

Topology

hosts---------------router----------------isp

Bandwidth between hosts and router is 100 Mbps

Bandwidth between router and ips is 10 Mbps

When i am taking captures on the router interface which is connected to the host for tcp traffic my upload speed is 10 Mbps.

Captures taken on the router interface connected to the isp shows speed of 10 Mbps which is expected.

However should i expect to see 100 Mbps speed on the router interface connected to the hosts if they try to upload 100 Mbps traffic or 10 Mbps which i am getting now ?

Is there any flow control mechanism that TCP has that would control the flow of the outbound data as seen on the router interface connected to the hosts?

Rajat

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