EIGRP behaviour on different interfaces

From: sugam agrawal (netshikhar@gmail.com)
Date: Sun Jul 09 2006 - 07:37:38 ART


Hi,

I have 2 queries...

1. I have some confusion around hello/dead time on different
interfaces....Please let me know whether I am correct here...

PPP, HDLC Point-to-Point links > T1 <=> 5/15 secs
PPP, HDLC Point-to-Point links =< T1 <=> 60/180 secs
FR Point-to-Point links with speed > T1 <=> 5/15 secs
FR Point-to-Point links with speed =< T1 <=> 60/180 secs
FR Multipoint links with speed > T1 <=> 5/15 secs
FR Multipoint links with speed =< T1 <=> 60/180 secs

If the above is true, it means that the hello/dead time depends on bandwidth
and not on type of interface.

Am I corrcet ?

2. Two routers are connected in following way....running EIGRP

R1(multipoint, speed T1) ----------------FR
Cloud-------------------------(point-to-point, >T1 speed)R2

By default EIGRP would use a hello interval --> 60 secs on R1
                                                                --> 5 secs
on R2

Though the neighborship would be formed b/w R1 and r2, wudn't it flap on R2
as the ACK/Hellos received from R1 wud always be after its hold time(15
secs).

Thanks,
Sugam



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