From: Ken.Farrington@barclayscapital.com
Date: Tue Aug 19 2003 - 15:30:21 GMT-3
Hi Tim, tried this and the ip default-network command is classful so this
just adds a static route and you do not get a default-candidate.
thx fella for the input anyway, much welcomed
still got me baffeled thou ....
-----Original Message-----
From: Reisner, Tim [mailto:TR126568@exchange.DAYTONOH.NCR.com]
Sent: 19 August 2003 19:25
To: Ken.Farrington@barclayscapital.com; ccielab@groupstudy.com
Subject: RE: OSPF default-network (really sorry for this)
Try
ip default-network 128.10.1.0
-----Original Message-----
From: Ken.Farrington@barclayscapital.com
[mailto:Ken.Farrington@barclayscapital.com]
Sent: Tuesday, August 19, 2003 12:02 PM
To: ccielab@groupstudy.com
Subject: OSPF default-network (really sorry for this)
Guys,
This is one of those moments where I am about to throw the CCIE Pratical
Studies book out of my window and go down the PUB! In the book, one of the
tasks is to inject a default network into the OSPF domain without using
statics.
So, I do as the book tells me and on my router I add a the following
!
router ospf 2002
router-id 192.168.200.200
log-adjacency-changes
area 10 authentication
area 10 stub no-summary
network 128.10.1.0 0.0.0.255 area 0
network 172.16.1.0 0.0.0.255 area 0
network 172.16.2.4 0.0.0.3 area 10
neighbor 172.16.1.6
neighbor 172.16.1.1
default-information originate always <----ADDED
!
ip classless
ip default-network 128.10.0.0 <----ADDED
Please note there are no static routes on thsi router as instructed.
The "default-information originate always" command injects a default route
into every router into the OSPF domain excpet this router ccie-rtr7 with the
command on. But this has a default network of 128.10.0.0 (refer to page 810
for the diag)
I do a show ip route on this router and it has a candidate default of
128.10.0.0 but no GOLR
I do exactly as the book says, but as this does not set a GOLR on ccie-rtr7,
anything for networks not in the routing table will just get dropped.
Example of debug ip packet at end.
Please help :((
ccie-rtr7#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
172.16.0.0/16 is variably subnetted, 4 subnets, 3 masks
O IA 172.16.10.0/28 [110/74] via 172.16.1.1, 00:19:06, Serial0/0.1
[110/74] via 172.16.1.6, 00:19:06, Serial0/0.1
C 172.16.2.4/30 is directly connected, Serial0/0.2
C 172.16.1.0/24 is directly connected, Serial0/0.1
O 172.16.3.0/24 [110/65] via 172.16.2.6, 00:21:06, Serial0/0.2
* 128.10.0.0/24 is subnetted, 1 subnets
C 128.10.1.0 is directly connected, Ethernet0/1
10.0.0.0/24 is subnetted, 1 subnets
C 10.1.1.0 is directly connected, Ethernet0/0
O E2 11.0.0.0/8 [110/20] via 172.16.1.1, 00:19:06, Serial0/0.1
[110/20] via 172.16.1.6, 00:19:06, Serial0/0.1
12.0.0.0/24 is subnetted, 1 subnets
C 12.1.1.0 is directly connected, BRI0/0
ccie-rtr7#
ccie-rtr7#ping 155.195.1.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 155.195.1.1, timeout is 2 seconds:
01:09:37: IP: s=10.1.1.7 (local), d=155.195.1.1, len 100, unroutable
01:09:39: IP: s=10.1.1.7 (local), d=155.195.1.1, len 100, unroutable.
01:09:41: IP: s=10.1.1.7 (local), d=155.195.1.1, len 100, unroutable.
01:09:43: IP: s=10.1.1.7 (local), d=155.195.1.1, len 100, unroutable
01:09:45: IP: s=10.1.1.7 (local), d=155.195.1.1, len 100, unroutable.
Success rate is 0 percent (0/5) ccie-rtr7#
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