Re: [c-nsp] IOS reliability

2009-01-08 Thread Peter Rathlev
Thank you all for the input. Especially Gary who wrote off list: IOS reliability, as for most software, depends to a large extent on how often one exercises those parts of the software that simply are less used and tested. I have never run into problems with any IOS for the simple case of

Re: [c-nsp] IOS reliability

2009-01-07 Thread A . L . M . Buxey
hi, there can be the occasional bug or glitch - mainly (in our experience) due to new types of traffic on the network. our main downtimes are due to power outage (in excess of our UPS 6hr capability) and firmware updates. however, you can help to negate any IOS issue by eg using dual supervisors

[c-nsp] IOS reliability

2009-01-07 Thread Peter Rathlev
Hello, We've been asked to asses some network parameters regarding a SLA for an important business system. We've worked out the usual stuff with MTBF and line reliability and so forth. What we don't have is some kind of statistical material on the stability of the IOS software we're running. The

Re: [c-nsp] IOS reliability

2009-01-07 Thread Peter Rathlev
On Wed, 2009-01-07 at 11:18 +, a.l.m.bu...@lboro.ac.uk wrote: there can be the occasional bug or glitch - mainly (in our experience) due to new types of traffic on the network. our main downtimes are due to power outage (in excess of our UPS 6hr capability) and firmware updates.

Re: [c-nsp] IOS reliability

2009-01-07 Thread Ross Vandegrift
On Wed, Jan 07, 2009 at 11:18:06AM +, a.l.m.bu...@lboro.ac.uk wrote: ...and safeharbor is always a good option unless you cant use it (eg new a feature thats not in a safeharbor release!) Don't put too much stock on the Safe Harbor label. We have an internal control to only run Safe Harbor

Re: [c-nsp] IOS reliability

2009-01-07 Thread Phil Mayers
Ross Vandegrift wrote: On Wed, Jan 07, 2009 at 11:18:06AM +, a.l.m.bu...@lboro.ac.uk wrote: ...and safeharbor is always a good option unless you cant use it (eg new a feature thats not in a safeharbor release!) Don't put too much stock on the Safe Harbor label. We have an internal

Re: [c-nsp] IOS reliability

2009-01-07 Thread Laurent Geyer
On Wed, Jan 7, 2009 at 9:52 AM, Ross Vandegrift r...@kallisti.us wrote: On Wed, Jan 07, 2009 at 11:18:06AM +, a.l.m.bu...@lboro.ac.uk wrote: Most of the crashes have been related to SNMP. For many MIBs, if you poll an object at the same time it is changed/removed, there's a race

Re: [c-nsp] IOS reliability

2009-01-07 Thread Kevin Loch
Peter Rathlev wrote: We're mostly running C6k with 12.2SXF and 7200 with 12.4 main, and I know it's very complicated to give some figures, but do any of you know of any studies regarding IOS stability in general? Its a lot like the reliability of hard drives. If it runs for three weeks it