From: Justin Menga (Justin.Menga@xxxxxxxxxxxxxxxxxx)
Date: Sun Oct 29 2000 - 17:55:06 GMT-3
The calculation is quite simple - the table probably recommends a 10ms delay
as this is the Cisco recommendation.
E.g. if you have 64kbps bandwidth and you want to have a maximum
serialization delay of 10ms:
Number of bits that can be put onto wire in one second = 64000 = 8 Kilobytes
Now number of bytes that will travel in 10ms = 8K * .01 = 80 bytes.
Hence, if your fragment size is 80 bytes on a 64K link, this would incur a
serialization delay of 10ms. Similarly for a 32K link, the fragment size
would be 40 bytes.
Regards,
Justin Menga MCSE+I CCNP CCSE ASE
WAN Specialist
Computerland New Zealand
PO Box 3631, Auckland
DDI: (+64) 9 360 4864 Mobile: (+64) 25 349 599
mailto: justin.menga@computerland.co.nz
-----Original Message-----
From: JKimes1@aol.com [mailto:JKimes1@aol.com]
Sent: Monday, 30 October 2000 9:51 a.m.
To: Justin.Menga@computerland.co.nz; jianggx@transcentury.com.cn;
ccielab@groupstudy.com
Subject: Re: VOIP, why does the multilink make the voice worse??
Seems to me that I've seen a table somewhere about recommended fragmentation
sizes depending on your bandwidth.... I've been looking for that table
since. Does anyone know of such a table???
Tx
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