From: Danny.Andaluz@triaton-na.com
Date: Fri Nov 07 2003 - 13:35:26 GMT-3
Adam,
Switch2 should learn the 149.10.0.0/16 from Switch1, not the detailed
network of 149.10.11.0/24. The link between Sw1 and Sw2 falls under the
major net of 139.10.0.0. Switch2 and Router1 have summarization turned off.
That doesn't affect what Sw1 does with these networks though. Sw1 should
install those routes for the classfull Nets to Null0. Still working on it.
Thanks,
Danny
-----Original Message-----
From: R&S Groupstudy [mailto:rsg@synergy-networking.co.uk]
Sent: Friday, November 07, 2003 9:49 AM
To: Andaluz, Danilo, Triaton/NA; ccielab@groupstudy.com
Subject: RE: EIGRP auto-summary question
Don't know - maybe, It does look like /16's should be created by switch2
from your description!
Adam
-----Original Message-----
From: Danny.Andaluz@triaton-na.com [mailto:Danny.Andaluz@triaton-na.com]
Sent: 07 November 2003 14:37
To: rsg@synergy-networking.co.uk; ccielab@groupstudy.com
Subject: RE: EIGRP auto-summary question
All three routers are neighbors. I was learning the 149/16 on Switch2 and
learning the detailed 139.10.12.0/24 on Router1. I reloaded Switch1 and now
the 149/16 null0 route is gone and both router1 and switch2 are learning
detailed networks. Before reloading, the 149/16 route was there while the
139/16 was not. Is this some sort of bug or does EIGRP operate a little
differently on 3350's?
Here's a "sh ip eigrp neigh", "show ver" and "show ip route" from the cat
after reloading:
switch1#sh ip eigrp neigh
IP-EIGRP neighbors for process 100
H Address Interface Hold Uptime SRTT RTO Q Seq
Type
(sec) (ms) Cnt Num
1 149.10.11.1 Vl11 12 00:09:26 1 3000 0 23
0 139.10.12.11 Fa0/23 10 00:10:04 1 200 0 14
switch1
switch1#sh ver
Cisco Internetwork Operating System Software
IOS (tm) C3550 Software (C3550-I5Q3L2-M), Version 12.1(11)EA1, RELEASE
SOFTWARE (fc1)
Copyright (c) 1986-2002 by cisco Systems, Inc.
Compiled Wed 28-Aug-02 10:03 by antonino
Image text-base: 0x00003000, data-base: 0x0071D658
ROM: Bootstrap program is C3550 boot loader
switch1 uptime is 9 minutes
System returned to ROM by power-on
System image file is
"flash:c3550-i5q3l2-mz.121-11.EA1/c3550-i5q3l2-mz.121-11.EA1.bin"
cisco WS-C3550-24 (PowerPC) processor (revision E0) with 65526K/8192K bytes
of memory.
Processor board ID CHK0629W0VL
Last reset from warm-reset
Bridging software.
Running Layer2/3 Switching Image
Ethernet-controller 1 has 12 Fast Ethernet/IEEE 802.3 interfaces
Ethernet-controller 2 has 12 Fast Ethernet/IEEE 802.3 interfaces
Ethernet-controller 3 has 1 Gigabit Ethernet/IEEE 802.3 interface
Ethernet-controller 4 has 1 Gigabit Ethernet/IEEE 802.3 interface
24 FastEthernet/IEEE 802.3 interface(s)
2 Gigabit Ethernet/IEEE 802.3 interface(s)
The password-recovery mechanism is enabled.
384K bytes of flash-simulated non-volatile configuration memory.
Base ethernet MAC Address: 00:0A:8A:14:DD:00
Motherboard assembly number: 73-5700-08
Power supply part number: 34-0966-02
Motherboard serial number: CAT062805QP
Power supply serial number: DAB06280FSM
Model revision number: E0
Motherboard revision number: D0
Model number: WS-C3550-24-EMI
System serial number: CHK0629W0VL
Configuration register is 0x10F
switch1#
switch1#sh ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter
area
* - candidate default, U - per-user static route, o - ODR
P - periodic downloaded static route
Gateway of last resort is not set
139.10.0.0/24 is subnetted, 3 subnets
C 139.10.10.0 is directly connected, Loopback0
C 139.10.12.0 is directly connected, FastEthernet0/23
C 139.10.45.0 is directly connected, Vlan45
149.10.0.0/24 is subnetted, 1 subnets
C 149.10.11.0 is directly connected, Vlan11
switch1#
-----Original Message-----
From: R&S Groupstudy [mailto:rsg@synergy-networking.co.uk
<mailto:rsg@synergy-networking.co.uk> ]
Sent: Friday, November 07, 2003 4:54 AM
To: Andaluz, Danilo, Triaton/NA; ccielab@groupstudy.com
Subject: RE: EIGRP auto-summary question
I notice that Switch1 isn't learing any routes from Router1 or Router2. Can
you ensure that the adjacencies are up? This may make it work for you, but
you're correct, this doesn't explain why you're seeing a /16 on the 149, but
not on the 139...
Adam
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com
<mailto:nobody@groupstudy.com> ]On Behalf Of Danny.Andaluz@triaton-na.com
Sent: 07 November 2003 02:44
To: ccielab@groupstudy.com
Subject: EIGRP auto-summary question
Hey, Group. Why won't EIGRP install a summary for 139.10.0.0 like it did
149.10.0.0????? This has me stumped. >:-|
Here's my logical topology:
http://home.comcast.net/~practice.lab.examples/eigrpautosummary.jpg
<http://home.comcast.net/~practice.lab.examples/eigrpautosummary.jpg>
<http://home.comcast.net/~practice.lab.examples/eigrpautosummary.jpg
<http://home.comcast.net/~practice.lab.examples/eigrpautosummary.jpg> >
Thanks,
Danny
switch1# sh run | b router eigrp 100
router eigrp 100
network 139.10.12.0 0.0.0.255
network 149.10.11.0 0.0.0.255
auto-summary
no eigrp log-neighbor-changes
switch1#sh ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter
area
* - candidate default, U - per-user static route, o - ODR
P - periodic downloaded static route
Gateway of last resort is not set
139.10.0.0/24 is subnetted, 3 subnets
C 139.10.10.0 is directly connected, Loopback0
C 139.10.12.0 is directly connected, FastEthernet0/23
C 139.10.45.0 is directly connected, Vlan45
149.10.0.0/16 is variably subnetted, 2 subnets, 2 masks
C 149.10.11.0/24 is directly connected, Vlan11
D 149.10.0.0/16 is a summary, 00:02:03, Null0
switch1#
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