mailing list archives
From: "Stephen Sprunk" <ssprunk () cisco com>
Date: Tue, 31 Oct 2000 12:32:07 -0600
Thus spake "Spolidoro, Guilherme" <guilherme.spolidoro () unisys com>
Since they don't own the backbone, their SLAs apply only to their
i.e. they cannot guarantee performance, packet loss, delay, outages,
over somebody else's backbone (e.g. Sprint, UUNet, AT&T, etc).
Nor can anyone who peers with the above; InterNAP theoretically has a
better chance of getting good service, since they're a paying customer.
That's how their business model goes, at least.
Many large enterprises are leveraging on the Internet to deploy VPN
connectivity between company sites as a replacement for Frame Relay
or ATM PVCs. In such cases, it's very important to make sure that the
service comes with the right SLAs.
SLAs are rarely worth the paper they're printed on. If you do not
design your network/services/whatever around the *expectation* that your
carrier will fail, you're in for a rough ride. What consolation is a
prorated refund when your circuit is down for 2+ days?
| | Stephen Sprunk, K5SSS, CCIE #3723
:|: :|: Network Design Consultant, GSOLE
:|||: :|||: New office: RCDN2 in Richardson, TX
.:|||||||:..:|||||||:. Email: ssprunk () cisco com