Re: [RPRWG] Wait To Restore
Hi John,
If damping a flapping link is not standardized and if it is left for the
vendors to implement it the way the like then we *can* experience a lot of
problems in interoperatibility between different vendors. This can create a
havoc in the routing protocols. Suppose link A is flapping and vendor X
implements this link flap damp feature then it may start damping it even
when it is UP (because it has already flapped many times and has crossed a
threshold). The other side knows that the link A is UP but wont understand
why it is not responding to the HELLOs he is sending!
Moreover i feel that the various timers associated with damping a flapping
link should be standardized.
As i mentioned before WTR is just not good enough for this purpose.
~Manav
----- Original Message -----
From: "John Lemon" <JLemon@xxxxxxxxxxxx>
To: "'Manav Bhatia'" <manav@xxxxxxxxxxx>; <stds-802-17@xxxxxxxx>
Sent: Monday, July 29, 2002 9:38 PM
Subject: RE: [RPRWG] Wait To Restore
| Manav,
|
| There is nothing in the standard that requires or prevents this. This is
| something a station could easily do, using the existing standard. The
| standard provides the basic enabling technology which can then be built
upon
| by each implementer to provide many different implementations, each with
| their own unique values.
|
| jl
|
| -----Original Message-----
| From: Manav Bhatia [mailto:manav@xxxxxxxxxxx]
| Sent: Monday, July 29, 2002 7:10 AM
| To: stds-802-17@xxxxxxxx
| Subject: [RPRWG] Wait To Restore
|
|
|
| Hi,
| Is there any proposal to damp a flapping link if it flaps beyond some
| threshold value? I am looking for exponential decay wherein if it remains
| stable till some time length then it will again be considered fit for
use.
| IMHO we must penalize a link more if it flaps severely or more often than
a
| link which flaps lesser number of times and less
| vigorously. Using the WTR we don't differentiate between the two cases
| since both of them are advertised if they remain stable for some time
| period which is specified in the WTR.
|
| What do others feel about this?
|
| Regards,
| Manav
| ----
| "When you are courting a nice girl an hour seems like a second. When you
| sit on a red-hot cinder a second seems like an hour. That's relativity."
|
| -Albert Einstein, on relativity
|