From: Huan Pham (Huan.Pham@peopletelecom.com.au)
Date: Mon Sep 01 2008 - 03:52:01 ART
Hi,
You can use debug ip routing, and debug ip eigrp (event) to see how
things happening.
Remember that EIGRP is a hybrid protocol, so you will not see a periodic
updates like RIP, but only update as change occurs. If there's a change
to a route, you will see update for that route ONLY, and you do not see
"all routes" that a router sends to a neighbor. Not like RIP!
See below for how router report change for the loopback 150.1.1.0/25 to
its neighbor.
Rack1R1#sb
Interface IP-Address OK? Method Status
Protocol
FastEthernet0/0 155.1.146.1 YES NVRAM up
up
Serial0/0.1 155.1.0.1 YES NVRAM up
up
Serial0/1 155.1.13.1 YES NVRAM up
up
Loopback0 150.1.1.1 YES NVRAM administratively
down down
Rack1R1#
Rack1R1#
Rack1R1#debug ip eigrp
IP-EIGRP Route Events debugging is on
Rack1R1#debug ip routing
IP routing debugging is on
Rack1R1#
Rack1R1#
Rack1R1#
Rack1R1#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Rack1R1(config)#int lo0
Rack1R1(config-if)#
Rack1R1(config-if)#no shut
Rack1R1(config-if)#
*Mar 1 01:37:32.787: is_up: 1 state: 4 sub state: 1 line: 0 has_route:
False
*Mar 1 01:37:32.787: RT: SET_LAST_RDB for 150.1.1.0/24
NEW rdb: is directly connected
*Mar 1 01:37:32.787: RT: add 150.1.1.0/24 via 0.0.0.0, connected metric
[0/0]
*Mar 1 01:37:32.791: RT: NET-RED 150.1.1.0/24
*Mar 1 01:37:32.791: RT: interface Loopback0 added to routing table
*Mar 1 01:37:32.811: IP-EIGRP(Default-IP-Routing-Table:100):
150.1.1.0/24 - do advertise out Serial0/1
*Mar 1 01:37:32.811: IP-EIGRP(Default-IP-Routing-Table:100): Int
150.1.1.0/24 metric 128256 - 256 128000
*Mar 1 01:37:32.855: IP-EIGRP(Default-IP-Routing-Table:100): Processing
incoming UPDATE packet
*Mar 1 01:37:32.855: IP-EIGRP(Default-IP-Routing-Table:100): Int
150.1.1.0/24 M 4294967295 - 1657856 4294967295 SM 4294967295 - 1657856
4294967295
*Mar 1 01:37:34.783: is_up: 1 state: 4 sub state: 1 line: 0 has_route:
True
*Mar 1 01:37:35.783: %LINEPROTO-5-UPDOWN: Line protocol on Interface
Loopback0, changed state to up
*Mar 1 01:37:35.783: is_up: 1 state: 4 sub state: 1 line: 0 has_route:
True
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
akyccie
Sent: Monday, 1 September 2008 4:04 PM
To: ccielab@groupstudy.com
Subject: Route advertise to eigrp neighbors
How to find routes advertised to eigrp neighbors. "debug ip eigrp" show
only the route installed in the routing table.
R1#
*Mar 1 00:11:28.599: IP-EIGRP(Default-IP-Routing-Table:100): route
installed for 10.1.1.4 () *Mar 1 00:11:28.599:
IP-EIGRP(Default-IP-Routing-Table:100): route installed for 10.2.1.0 ()
*Mar 1 00:11:28.599: IP-EIGRP(Default-IP-Routing-Table:100): route
installed for 10.2.3.0 ()
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