On 7/29/09, William Herrin wrote:
> Perhaps you miss my point: what the ISP is offering to pay me as a
> result of a failure to deliver adequate service is so much less than
> my loss for the same as to render the payment meaningless. I'm gonna
> terminate the contract for nonperformance and h
d Off-topic Gripes
Subject: Re: Ahoy, SLA boffins!
JC Dill wrote:
> William Herrin wrote:
>> The SLA's I've looked at promise me that if their service is hard
>> down for a week (with no ambiguity whatsoever) they'll credit my bill
>> for upwards of 2% of th
Stephen Sprunk wrote:
Read your contract closely and you'll find that, except for an explicit
SLA clause (which will cost you extra), they make no guarantee that the
circuit will work at all and you'll still owe them money.
I am not a lawyer. However, over the years many lawyers have told me
JC Dill wrote:
> William Herrin wrote:
>> The SLA's I've looked at promise me that if their service is hard
>> down for a week (with no ambiguity whatsoever) they'll credit my bill
>> for upwards of 2% of the $50k/year or so I spend on the Internet
>> connection for my mutli-million dollar online s
On Wed, Jul 29, 2009 at 4:19 PM, JC Dill wrote:
> William Herrin wrote:
>> The SLA's I've looked at promise me that if their service is hard down
>> for a week (with no ambiguity whatsoever) they'll credit my bill for
>> upwards of 2% of the $50k/year or so I spend on the Internet
>> connection for
William Herrin wrote:
On Wed, Jul 29, 2009 at 12:34 AM, Bill Woodcock wrote:
Am I over-thinking this?
The SLA's I've looked at promise me that if their service is hard down
for a week (with no ambiguity whatsoever) they'll credit my bill for
upwards of 2% of the $50k/year or so I spend
On Wed, Jul 29, 2009 at 12:34 AM, Bill Woodcock wrote:
> Am I over-thinking this?
The SLA's I've looked at promise me that if their service is hard down
for a week (with no ambiguity whatsoever) they'll credit my bill for
upwards of 2% of the $50k/year or so I spend on the Internet
connection for
We use the BRIX active measurement system (BRIX now owned by EXFO) which
gathers round trip time, packet loss, and jitter randomly every minute
24x7x365 for our major backbone links to calculate SLAs. "Network
Availability" can be measured empirically using BRIX calculated values
of packet loss, an
Aawaw
On 7/29/09, Bill Woodcock wrote:
>
> So I've embarked on the no-doubt-futile task of trying to interpret
> SLAs as empirically-verifiable technical specifications, rather than
> as marketing blather. And there's something that I'm finding
> particularly puzzling:
>
> In most SLAs, there se
> Now, having said all that, and having been one of the people who've
> attempted to communicate sane, rational, technical ideas to marketing
> and legal the chance that anything sane made it in the actual contract
> is, well, nil.
I disagree.
If someone takes the trouble to publish a technical d
I think the desired goal here is to separate the access SLA from
the backbone SLA. That is, consider a simple picture:
Network Cloud--Provider Edge Router-Local Loop-Customer Router
Network availability is the % of the time the customer router and
provider edge router can communica
Bill,
To be brief, but hopefully not too fleeting, the majority of the
standards orgs - ITU, MEF - use packet loss to derive availability.
Loss% = the % of packets which were transmitted but not received by the
destination host. As for availability, loss is measured across some
time period. If d
> Am I over-thinking this?
Yes, I think so. Often a large component of an SLA is related to the
cost of compliance versus the cost of the penalty imposed. If it is
cheaper to pay the occasional penalty, rather than construct the
network to meet the SLA, then the network operator will often make a
On Jul 29, 2009, at 12:34 AM, Bill Woodcock wrote:
So I've embarked on the no-doubt-futile task of trying to interpret
SLAs as empirically-verifiable technical specifications, rather than
as marketing blather. And there's something that I'm finding
particularly puzzling:
In most SLAs, th
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