From: Tharak Abraham (tharakabraham@gmail.com)
Date: Sat Mar 21 2009 - 20:06:14 ART
Hi,
R1 is connected to R3 via frame relay and serial link.(redundant) and
networks advertised via eigrp.
If right, i am supposed to get both my interfaces as eigrp neighbours under
the command "sh ip eigrp neigh"
But am getting only one and that particular interface which forms the
adjacency first(first advertised)
when i did a debug ip packet the result showed as follows and saw the serial
interfaces being unroutable
R3#
*Mar 1 01:32:48.947: IP: s=155.1.45.1 (Serial3/0), d=224.0.0.10, len 60,
unroutable
*Mar 1 01:32:52.015: IP: s=150.1.3.3 (local), d=224.0.0.10 (Loopback0), len
60, sending b
road/multicast
*Mar 1 01:32:52.023: IP: s=150.1.3.3 (Loopback0), d=224.0.0.10, len 60,
rcvd 2
*Mar 1 01:32:53.567: IP: s=155.1.45.1 (Serial3/0), d=224.0.0.10, len 60,
unroutable
*Mar 1 01:32:56.639: IP: s=150.1.3.3 (local), d=224.0.0.10 (Loopback0), len
60, sending b
road/multicast
*Mar 1 01:32:56.647: IP: s=150.1.3.3 (Loopback0), d=224.0.0.10, len 60,
rcvd 2
*Mar 1 01:32:58.247: IP: s=155.1.45.1 (Serial3/0), d=224.0.0.10, len 60,
unroutable
I tried the other way round by advertising the serial 3/0 first and resulted
in frame relay interface throwing the unroutable messages
R1#
*Mar 1 01:40:03.911: IP: s=155.1.45.3 (Serial3/0), d=224.0.0.10, len 60,
rcvd 2
*Mar 1 01:40:04.679: IP: s=12.0.0.2 (Serial1/0), d=224.0.0.10, len 60,
unroutable
*Mar 1 01:40:04.807: IP: s=155.1.45.1 (local), d=224.0.0.10 (Serial3/0),
len 60, sending
broad/multicast
R1#
*Mar 1 01:40:05.579: IP: s=12.0.0.2 (Serial1/0), d=224.0.0.10, len 60,
unroutable
*Mar 1 01:40:05.611: IP: s=150.1.1.1 (local), d=224.0.0.10 (Loopback0), len
60, sending b
road/multicast
*Mar 1 01:40:05.619: IP: s=150.1.1.1 (Loopback0), d=224.0.0.10, len 60,
rcvd 2
*Mar 1 01:40:06.467: IP: s=12.0.0.2 (Serial1/0), d=224.0.0.10, len 60,
unroutable
I dont know whether someone has faced this problem, but it looks similar to
a bug in this link towards the end,
http://www.cisco.com/en/US/products/hw/routers/ps167/products_tech_note09186a0080094320.shtml
But i am not getting any drops as such specified in the doc and its
happening with both the routers and with different interfaces !
please let me know whether its the same?
Best Regards,
Tharak Abraham.
Blogs and organic groups at http://www.ccie.net
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