| T.R | Title | User | Personal
Name | Date | Lines |
|---|
| 942.1 | | NPSS::MDLYONS | Michael D. Lyons DTN 226-6943 | Fri Feb 28 1997 15:41 | 9 |
| It's just as simple as you describe, along with the dangers you
describe.
Multiple logical bridge domains won't help you because traffic is not
allowed between them with this implementation.
Please, please, please upgrade to BL3.1
MDL
|
| 942.2 | Thanks | SPANKY::DANIELS | | Mon Mar 03 1997 07:42 | 2 |
| Thanks for the reply Mike. Will upgrade in March, customer has
a scheduled shutdown.
|
| 942.3 | | AMCFAC::RABAHY | dtn 471-5160, outside 1-810-347-5160 | Mon Mar 03 1997 15:20 | 2 |
| Upgrade online. Apparently the dual SCP option supports online firmware
upgrading. Naturally you'd upgrade one of them at a time.
|
| 942.4 | | NPSS::MDLYONS | Michael D. Lyons DTN 226-6943 | Mon Mar 10 1997 10:57 | 10 |
| Upgrading the elected SCP will cause all the line cards to power
cycled with the current firmware. This is very noticeable to most
network managers!
This behaviour has recently come under discussion again, and it is
possible that it may be changed if there is sufficient interest.
Please forward all comments and business justifications to the product
manager (Bernie Zarin).
MDL
|
| 942.5 | | AMCFAC::RABAHY | dtn 471-5160, outside 1-810-347-5160 | Mon Mar 10 1997 13:14 | 4 |
| re .4:
I gather that upgrading the standby SCP is ok? Once it is upgraded, a failover
can be forced? Ah, the failover leads to line cards cycling?
|
| 942.6 | | NPSS::MDLYONS | Michael D. Lyons DTN 226-6943 | Mon Mar 10 1997 15:22 | 3 |
| ...yes, the failover leads to the line cards recycling...
MDL
|
| 942.7 | | AMCFAC::RABAHY | dtn 471-5160, outside 1-810-347-5160 | Tue Mar 11 1997 11:46 | 10 |
| re .6:
Line card recycling leads to all of the standard communication disruptions
(spanning tree, prelearning, etc.), right? So, if the applications can
configure upper layers to tolerate these and can choose a time of acceptable
impact then a weak form of online firmware upgrade is possible. Otherwise you
may need two GIGAswitch/FDDI components.
Hmm, even with only a single SCP, this weak form of online firmware upgrade is
possible. Is the time of impact reduced by having redundant SCP's?
|
| 942.8 | | NPSS::MDLYONS | Michael D. Lyons DTN 226-6943 | Tue Mar 11 1997 13:43 | 11 |
| It only saves the SCP diagnostic time which takes about 45 seconds.
If your customer can reconfigure the upper layer applications to
tolerate two minute+ outages, then your customer is one of the few
which can do so... Most are rather upset at the idea of a 15 second
outage.
The dual homed type of configuration discussed in many other notes
is about the least intrusive to upgrade, but that one takes a hit too.
MDL
|