RE: Compression mystery

From: Hunt Lee (huntl@webcentral.com.au)
Date: Wed Mar 12 2003 - 01:49:32 GMT-3


Hi Scott,

What do you mean by "reserved queues"? WFQ is there too... so... Are you
talking about priority queue by LLQ?

Or what are you referring to?

Thanks in advance,

Best Regards,
Hunt

From: "Scott Morris" <swm@emanon.com>

That's correct. RTP is UDP stuff (primarily voice), while TCP is...
Well... TCP. :)

The queuing isn't very forgiving there. :) No reserved queues, but only 16
dynamic queues?Apparantly not much will happen on this line! But you want
to allow a good amount of RTP through...

Scott

-----Original Message-----
From: Hunt Lee [mailto:ciscoforme3@yahoo.com.au]
Sent: Tuesday, 11 March 2003 9:11 PM
To: ccielab@groupstudy.com
Subject: Compression mystery

Hi Group,

I saw the following config from a VoIP config...

Would you know what is the differnece between "ip tcp header-compression
iphc-format" & "ip rtp header-compression iphc-format"?

Is it the first one is used to compress TCP "data" traffic, whereas the
latter one is used to compress "RTP traffic" e.g. voice?

interface Multilink1
 ip unnumbered Ethernet1/0
 no ip directed-broadcast
 ip tcp header-compression iphc-format <--- This?
 no ip mroute-cache
 fair-queue 64 16 0
 no cdp enable
 ppp multilink
 ppp multilink fragment-delay 10
 ppp multilink interleave
 multilink-group 1
 ip rtp header-compression iphc-format <--- & this?
 ip rtp priority 16384 16383 48

And what does iphc-format do?

Any help / ideas would be greatly appreciated.

Regards,
Hunt

http://mobile.yahoo.com.au - Yahoo! Mobile
- Check & compose your email via SMS on your Telstra or Vodafone mobile.



This archive was generated by hypermail 2.1.4 : Sat Apr 05 2003 - 08:51:37 GMT-3