nanog mailing list archives
Re: Link capacity upgrade threshold
From: Jack Bates <jbates () brightok net>
Date: Wed, 02 Sep 2009 09:16:10 -0500
Mikael Abrahamsson wrote:
If you're dropping packets, you're already over the cliff. Our job as ISP is to forward the packets our customers send to us, how is that compatible with upgrading links when they're so full that you're not only buffering but you're actually DROPPING packets?
Many ISPs don't even watch the dropping rate. Packets can easily start dropping long before you reach an 80% average mark or may not drop until 90% utilization. Dropped packets are a safeguard measurement to detect data collision that fills the buffers.
One could argue that setting QOS with larger buffers and monitoring the buffer usage is better than waiting for the drop.
Jack
Current thread:
- Re: Link capacity upgrade threshold Paul Jakma (Sep 01)
- Re: Link capacity upgrade threshold Aaron J. Grier (Sep 01)
- RE: Link capacity upgrade threshold Holmes,David A (Sep 01)
- RE: Link capacity upgrade threshold Deepak Jain (Sep 01)
- Re: Link capacity upgrade threshold Jack Bates (Sep 01)
- RE: Link capacity upgrade threshold Holmes,David A (Sep 01)
- <Possible follow-ups>
- Re: Link capacity upgrade threshold Kevin Graham (Sep 01)
- Re: Link capacity upgrade threshold Mikael Abrahamsson (Sep 01)
- Re: Link capacity upgrade threshold Jack Bates (Sep 02)
- Re: Link capacity upgrade threshold Richard A Steenbergen (Sep 02)
- RE: Link capacity upgrade threshold Frank Bulk (Sep 07)
- Re: Link capacity upgrade threshold Mikael Abrahamsson (Sep 01)
- Re: Link capacity upgrade threshold Aaron J. Grier (Sep 01)