Ascend Archive
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: (ASCEND) Disappearing pool addresses?



This sounds like the "classic" ip pool leak.  Whet version are you
running?  There is a software fix for this.

Phillip Vandry wrote:
> 
> > I just rebooted my MAX 2000 to help it recover from a very strange
> > syndrome.  Users could not start PPP, because the MAX claimed that
> > it was unable to assign an IP address for their session.  I have a
> > pool set up of 23 addresses, one for each B channel on my PRI.  When
> > users started to complain about not being able to get an address, I
> > looked at it and saw, at various times, 23 addresses in use and none
> > free, with no sessions connected.
> 
> I don't recommend having exactly as many addresses as ports. In fact, I
> recommend having twice as many. Aside from the fact that you give
> yourself slop this way to protect against the problem you are
> experiencing, there are other advantages.
> 
> It is generally a good idea to have spare addresses assigned on a LRU
> basis. If an address is immediately reassigned to another user upon
> disconnection of one user, the new user might receive bogus traffic
> from connections not properly closed by the other user. It's not a
> big deal, those connections will just break immediately. However,
> there is a small security risk in that the new user (if knowledgable and
> determined) could recover and use connections left open by the first
> user.
> 
> -Phil
> ++ Ascend Users Mailing List ++
> To unsubscribe: send unsubscribe to ascend-users-request@bungi.com
> To get FAQ'd:   <http://www.shore.net/~dreaming/ascend-faq>
> or              <ftp://ftp.shore.net/members/dreaming/ascend-faq.txt>

-- 
Don Joy
System Administrator
SooNet Corp
++ Ascend Users Mailing List ++
To unsubscribe:	send unsubscribe to ascend-users-request@bungi.com
To get FAQ'd:	<http://www.shore.net/~dreaming/ascend-faq>
or		<ftp://ftp.shore.net/members/dreaming/ascend-faq.txt>


References: