nanog mailing list archives
Re: Network SLA
From: Charles Wyble <charles () thewybles com>
Date: Mon, 09 Mar 2009 10:37:08 -0700
What products/services do you use for traffic generation? Also what sort of testing methodology do you use? As for random probes that certainly seems like a nice feature.
Holmes,David A wrote:
We use BRIX for SLA's by measuring round trip times, jitter, and packet loss across all of our backbone links. In conjunction with a traffic generator to add background traffic, and potentially invoke queueing on interfaces, we have found that BRIX enables us to accurately predict the behavior of new applications, particularly multicast and HD video, without the need to implement elaborate QoS configurations. BRIX is now owned by EXFO, a fiber optic test equipment manufacturer. Low values for rtt, jitter, and packet loss imply a relatively queue-free network, which makes confident predictions about network behavior easier. When we last looked at the technology, the Cisco IP SLA probes did not capture a random distribution of network events, as the probes are triggered every N minutes. BRIX randomizes the probes within a configurable window, so that, over time, all time intervals are covered by the accumulated probes.
-- Charles N Wyble charles () thewybles com (818)280-7059 http://charlesnw.blogspot.com CTO SocalWiFI.net
Current thread:
- Re: Network SLA Saqib Ilyas (Mar 07)
- Re: Network SLA Chris Meidinger (Mar 07)
- Re: Network SLA Joe Provo (Mar 07)
- RE: Network SLA Holmes,David A (Mar 09)
- Re: Network SLA Charles Wyble (Mar 09)
- RE: Network SLA Andreas, Rich (Mar 11)
- Re: Network SLA Athanasios Douitsis (Mar 13)
- Re: Network SLA Saqib Ilyas (Mar 18)
- Re: Network SLA Chris Meidinger (Mar 18)
- Re: Network SLA Athanasios Douitsis (Mar 13)
- Re: Network SLA Chris Meidinger (Mar 07)