""Router Man""  wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> I've always known it to work the other way around.  If you change the
hello
> interval - the dead interval will
> become 4 times the hello interval.


CL: this was one of the old standbt trick questions in various study
materials. How to change hello without changing hello, or the flip side, how
to change dead without changing dead.

CL tested this and on 12.1.5T10 changing hello no longer changes dead, and
changing dead no longer changes hello. Resetting the OSPF process does not
result in changes to either parameter.

CL: Another new feature, making life easier.

>
> ""Cisco Nuts""  wrote in message
> [EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> > Hello,
> >
> > Couple of questions on OSPF hello and dead interval...(that's driving me
> > NUTS)  :-)
> >
> > 1. Why does OSPF NOT change the hello-interval when you first configure
> the
> > dead-interval. Ex. I changed the dead-interval to 60 but the
> hello-interval
> > still showed up as 10.
> >
> > R1-RTD(config-subif)#ip os dead-interval 60
> >
> > R1-RTD#sh ip os int s0/0.2
> > Timer intervals configured, Hello 10, Dead 60, Wait 60, Retransmit 10
> >
> > I was assuming that the hello interval would get bumped to 15 but looks
> like
> > that's not how it works!!
> >
> > ----------------------------------------------------------------------
> >
> > 2. So I changed the hello interval next to 20 thinking that it would
bump
> > the dead interval to 80. But lo! behold! It does NOT change it to 80.
Why
> is
> > this??
> >
> > R1-RTD(config-subif)#ip os hello-interval 20
> >
> > R1-RTD#sh ip os int s0/0.2
> > Timer intervals configured, Hello 20, Dead 60, Wait 60, Retransmit 10
> >
> > ----------------------------------------------------------------------
> >
> > 3. Next, I set the hello interval back to it's default of 10 but still
the
> > dead interval does not get set back to 40. Why??
> >
> > R1-RTD(config-subif)#ip os hello-interval 10
> >
> > R1-RTD#sh ip os int s0/0.2
> > Timer intervals configured, Hello 10, Dead 60, Wait 60, Retransmit 10
> >
> > ----------------------------------------------------------------------
> >
> > 4. So, I changed the dead interval back to 40 manually.
> >
> > Next, I changed the hello interval to 20 and this time, OSPF set the
dead
> > interval to 80.
> >
> > R1-RTD(config-subif)#ip ospf hello-interval 20
> >
> > R1-RTD#sh ip os int s0/0.2
> > Timer intervals configured, Hello 20, Dead 80, Wait 80, Retransmit 10
> >
> > 5. Ok, Finally I set the hello interval to 10 and this time OSPF worked
at
> > the way is should work.
> >
> > R1-RTD(config-subif)#ip ospf hello-interval 10
> >
> > R1-RTD#sh ip os int s0/0.2
> > Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 10
> >
> >
> > Anybody have any real good explanations for this or is it just a BUG? OR
> is
> > this the way Cisco OSPF works!!
> >
> > Running ver.
> > R1-RTD#sh ver
> > Cisco Internetwork Operating System Software
> > IOS (tm) C2600 Software (C2600-D-M), Version 12.1(2), RELEASE SOFTWARE
> (fc1)
> >
> > Thank you.
> >
> > Sincerely.
> >
> >
> >
> >
> > _________________________________________________________________
> > Send and receive Hotmail on your mobile device: http://mobile.msn.com




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