From: Justin Menga (Justin.Menga@xxxxxxxxxxxxxxxxxx)
Date: Thu May 10 2001 - 21:38:05 GMT-3
HI,
THe rule with the masks applies to networks within the same classful network
- hence RIP will quite happily accept Class A, B, C routes. E.g. if you
send 65.10.0.0/16, RIP would reject as it is using a 24-bit mask in the
65.0.0.0 Class A network. But if you send 64.0.0.0/8 RIP accepts as this is
a valid Class A network.
Regards,
Justin Menga CCIE #6640 CCNP+Voice+ATM CCDP MCSE+I CCSE
WAN Specialist
Computerland New Zealand
PO Box 3631, Auckland
DDI: (+64) 9 360 4864 Mobile: (+64) 25 349 599
mailto: justin.menga@computerland.co.nz
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-----Original Message-----
From: louie kouncar [mailto:lkouncar@UU.NET]
Sent: Friday, 11 May 2001 11:57 a.m.
To: ccielab@groupstudy.com
Subject: Please Help Solve this redistribution Problem
Group,
I have a weird situation that is driving me nuts, here is the scenario:
R4
|
|
R2-----------------------------R1--------------------------------R3
|
|
R5
R1 is running RIP with R2
R1 is running OSPF area 0 with R5
R1 is running IGRP with R3
R1 is running OSPF area 2 with R4
Here is the link configurations:
All links are Point-to-Point serial
Network assignments are:
65.1.1.0/24 between R1 and R2
66.1.1.0/24 between R1 and R5
67.1.1.0/24 between R1 and R3
68.1.1.0/24 between R1 and R4
Also R5 has a LO0 int 170.1.1.1/24 that is also in ospf area 0
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!PROBLEM!!!!!!!!!!!!!!!!!!!!!!!!!
If the link between R1 and R2 is a /24 and I am redistributing all the
Protocols into each other, Why does R2 see those networks as a classfull
networks {66.0.0.0/8, 67.0.0.0/8, 170.1.0.0/16, 68.0.0.0/8} and not
/24's......????
Also, I had to summarize the /24 ospf networks on R1 to /8's so that they
show up in R2's routing table, This is opposite to everything I have done so
far and is driving me nuts, I thought that if you have a /24 link in a RIP
or IGRP domain, only /24's are sent into it..
Please tell me that I am not crazy...........
R2#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, * - candidate
default
U - per-user static route, o - ODR
Gateway of last resort is not set
R 68.0.0.0/8 [120/1] via 65.1.1.1, 00:00:02, Serial0
R 170.1.0.0/16 [120/1] via 65.1.1.1, 00:00:03, Serial0
65.0.0.0/24 is subnetted, 1 subnets
C 65.1.1.0 is directly connected, Serial0
R 66.0.0.0/8 [120/1] via 65.1.1.1, 00:00:03, Serial0
R 67.0.0.0/8 [120/1] via 65.1.1.1, 00:00:03, Serial0
Thank you....................
Louie J. Kouncar
TCO3 Senior Data Center Engineer
UUNET
W-703-343-6645
C-703-304-2460
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