From: Scott Morris (smorris@internetworkexpert.com)
Date: Sun Aug 03 2008 - 14:56:48 ART
Intra Area will always come first.
Inter Area next.
External third. Within the externals, you'll prefer a Type1 (N1/E1) over a
Type 2.
HTH,
Scott Morris, CCIE4 #4713, JNCIE-M #153, JNCIS-ER, CISSP, et al.
CCSI/JNCI-M/JNCI-ER
Senior CCIE Instructor
smorris@internetworkexpert.com
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-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of dave
dave
Sent: Sunday, August 03, 2008 11:28 AM
To: Cisco certification; bdennis@internetworkexpert.com;
blog@internetworkexpert.com; Joseph Brunner
Subject: Re: EXPERT plz plz help...OSPF scnario brusting my head..
Hi All,
Thanks for your help. You was right as usual Mr. Brian :-)
Thanks all who took effort to help me.
One more Question: what is OSPF route selection order in term of intra,
inter, n1, n2, e1& e2 ?
r6#sh ip route 200.1.1.1
Routing entry for 200.1.1.0/24
Known via "ospf 1", distance 110, metric 301, *type inter area
* Last update from 10.66.2.1 on FastEthernet1/11, 00:33:09 ago
Routing Descriptor Blocks:
* 10.66.2.10, from 10.66.2.10, 00:33:09 ago, via FastEthernet1/10
Route metric is 301, traffic share count is 1
10.66.2.1, from 10.66.2.6, 00:33:09 ago, via FastEthernet1/11
Route metric is 301, traffic share count is 1
r4#sh ip ro 200.1.1.1
Routing entry for 200.1.1.0/24
Known via "ospf 1", distance 110, metric 201, *type intra area
* Last update from 10.66.1.9 on FastEthernet1/11, 00:52:52 ago
Routing Descriptor Blocks:
* 10.66.1.9, from 200.1.1.1, 00:52:52 ago, via FastEthernet1/11
Route metric is 201, traffic share count is 1
Regards,
Dave
On 8/3/08, dave dave <funccie@gmail.com> wrote:
>
> Hi Expert,
>
> *net: 200.0.0.0/24*
> --------------------------
> | |
> *R1* ----------------* R2*
> | |
> *R3=========R4* << === it means 2 physical L2 links ether channel as
> e.g. L2 Po1 & Vlan 100 running on R3 as well as R4 to to form ospf
> neighborship over L2 port channel. Vlan 100 in area 0
> | |
> *R5*----------------*R6*
> | |
> -------------------------
> *net: 100.0.0.0/24*
>
> Note :
> this color represting the ospf area 2
> this color represting the ospf area 1 this color represting the ospf
> area 0
>
> 1) R1, R2 & including links of R1 & R2 connected to R3 & R4 are on
> OSPF area 1
> 2) R5, R6 & including links of R5 & R6 connected to R3 & R4 are on
> OSPF area 2
> 3) All links are 100 Mbps.
> 4) L2 ether channel of each 100 Mbps links between the R3 & R4 is for
> vlan 100 ospf neighborship
> 5.) when i am traceroute from R6 to R1 for 200.x.x.x it is taking the
> path as follow:
> R6 --> R4 --> R2 --> R1-->200.x.x.x i am expecting the path as
> below , thinking it is the best path to reach destination.
> R6 --> R4 --> R3 --> R1-->200.x.x.x
>
> Regards,
> Dave
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