From: Michael Zuo (mzuo@ixiacom.com)
Date: Tue Nov 21 2006 - 18:12:24 ART
What is the OSPF area between A and C? you will also need a non-zero
area between the two as a "transit area". Also you need to make sure
the adjacency is up between A and C...
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Liu_Liao
Sent: Monday, November 20, 2006 9:56 PM
To: swm@emanon.com
Cc: 'ccielab groupstudy'
Subject: Re: ospf virtual-link
Hi All
===RTA===
interface Ethernet0/0
ip address 10.1.2.1 255.255.255.0
ip ospf priority 200
half-duplex
!
router ospf 1
router-id 10.10.1.1
log-adjacency-changes
network 10.1.1.0 0.0.0.255 area 0
network 10.1.2.0 0.0.0.255 area 0
!
===RTB===
interface FastEthernet1/0
ip address 10.1.2.3 255.255.255.0
ip ospf priority 0
duplex auto
speed auto
!
router ospf 5
router-id 10.10.5.5
log-adjacency-changes
network 10.10.5.5 0.0.0.0 area 0
network 10.1.2.0 0.0.0.255 area 0
network 10.1.3.1 0.0.0.0 area 52
Tks!
Scott Morris fe0:
> So what's RTB's config then?
>
>
------------------------------------------------------------------------
> *From:* Liu_Liao [mailto:liu_liao@yahoo.com.tw]
> *Sent:* Monday, November 20, 2006 9:46 AM
> *To:* swm@emanon.com
> *Cc:* 'ccielab groupstudy'
> *Subject:* Re: ospf virtual-link
>
>
>
> RTC RTA SW1
> RTB RTD
>
> All OSPF interfaces type is broadcast
>
>
> Scott Morris fe0:
>
>>Well, it appears that you don't have an ABR in your picture. Some
router
>>needs to be in both area 0 and area 10. Or, create the virtual link
>>somewhere! OSPF is interface-centric in its area configuration. Your
>>diagram would be appropriate for ISIS which is router-centric for its
>>config.
>>
>>HTH,
>>
>>
>>Scott Morris, CCIE4 (R&S/ISP-Dial/Security/Service Provider) #4713,
JNCIE
>>#153, CISSP, et al.
>>CCSI/JNCI-M/JNCI-J
>>IPExpert VP - Curriculum Development
>>IPExpert Sr. Technical Instructor
>>smorris@ipexpert.com
>>http://www.ipexpert.com
>>
>>PS. Stick area 10 on RTC-RTA link. Or stick area 10 on RTA-(next
ospf
>>neighbor) link. Or stick area 0 on RTB-(next ospf neighbor) link.
>>
>>-----Original Message-----
>>From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
Of
>>Liu_Liao
>>Sent: Monday, November 20, 2006 3:04 AM
>>To: 'ccielab groupstudy'
>>Subject: ospf virtual-link
>>
>>Hi All
>>
>>(OSPF Area0 10.1.3.0/24) (OSPF Area 0 10.1.1.x/24) RTC <--> RTA <-->
SW1
>><--> RTB (OSPF Area 10 10.1.2.0/24) May I need enable the virtual-link
for
>>RTB My the RTB show "Received invalid packet: mismatch area ID, from
>>backbone area must be virtual-link but not found from RTA's IP"
>>
>>______________________________________________________________________
_
>>Subscription information may be found at:
>>http://www.groupstudy.com/list/CCIELab.html
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