thanks a lotDanny Free wrote:
>
> OOPS,
> I forgot to add on Router 2:
> !
> router ospf 100
> area 0 authentication message-digest.
>
> :))
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Hi,
Yes. If Area 0 is MD5 then virtual link must be MD5 also.
Example:
ROUTER 1
!
int loopback0
ip address 150.150.1.1 255.255.255.0
ip ospf network point-to-point
!
router ospf 100
network 150.150.1.0 0.0.0.255 area 0
network 150.150.10.0 0.0.0.255 area 0
network 150.150.20.0 0.0.0.255 area 1
area
OOPS,
I forgot to add on Router 2:
!
router ospf 100
area 0 authentication message-digest.
:))
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hi,all
In ospf, when area 0 is authenticated by md5, should virtual-link be
authenticated by md5?
thanks in advance
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manner.
Someone asked me off line about how the Lab proctors might grade this kind
of task. The answer of course is "who knows?" All you're given is a
percentage of the general section. The key is understanding how to make it
work without spending too much time "trying thi
md5 keyword in the VL cmd??
>From: "The Long and Winding Road"
>Reply-To: "The Long and Winding Road"
>To: [EMAIL PROTECTED]
>Subject: OSPF Virtual link authentication - observations [7:65628]
>Date: Tue, 18 Mar 2003 05:04:47 GMT
>
>Not sure I ha
manner.
Someone asked me off line about how the Lab proctors might grade this kind
of task. The answer of course is "who knows?" All you're given is a
percentage of the general section. The key is understanding how to make it
work without spending too much time "trying thi
From: "The Long and Winding Road"
To:
Sent: Tuesday, March 18, 2003 12:04 AM
Subject: OSPF Virtual link authentication - observations [7:65628]
> Not sure I have this all sorted out correctly. Perhaps those with a bit
more
> experience might add their wisdom, not to mention thei
Not sure I have this all sorted out correctly. Perhaps those with a bit more
experience might add their wisdom, not to mention their corrections.
The ospf virtual link being what it is, it follows rules similar to any
other interface.
It does appear, though, that in terms of structure, it looks
Darn, left off the area 0 thing. Knew it was something simple. Thank you.
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Report
: OSPF virtual link authentication [7:52238]
My OSPF link will not come up. I'm trying to do MD5 authentication across a
virtual link. I thought there was a trick to this but I can not remember.
Any help?
Message Posted at:
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My OSPF link will not come up. I'm trying to do MD5 authentication across a
virtual link. I thought there was a trick to this but I can not remember.
Any help?
Message Posted at:
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Follow the same authentication procedures as Area 0. Try it out, prove me
wrong..
""IT Guy"" wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> Hi Guys,
>
> Please help me to solve the issues.
> DO we must have to configure virtual link for authentication aswell if our
> Area0 is
which area is a virtual link in?
""IT Guy"" wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> Hi Guys,
>
> Please help me to solve the issues.
> DO we must have to configure virtual link for authentication aswell if our
> Area0 is configured for authentication also??
>
> 2nd. we h
A0---purpose of virtual link is to enable access to Area 0, for more on this
check.
http://www.cisco.com/warp/public/104/27.html
James
-Original Message-
From: IT Guy [mailto:[EMAIL PROTECTED]]
Sent: Friday, February 22, 2002 5:03 AM
To: [EMAIL PROTECTED]
Subject: OSPF Virtual Link
Hi Guys,
Please help me to solve the issues.
DO we must have to configure virtual link for authentication aswell if our
Area0 is configured for authentication also??
2nd. we have two areas A0 and A10,configured with different password keys
and authentication schemes , and virtual link is setu
> Also, I suspect there are more of these kinds of problems with 12.x
images.
> My favorite is the one where you plug a cable into a port, set up your
layer
> three, and nothing works. All the configs are correct. A reload corrects
the
> situation. Starting with 12.x, the router does hardware chec
u get up up but no layer three works.
Reload,
and all is well.
Gotta love it.
HTH
Chuck
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
John Neiberger
Sent: Wednesday, October 24, 2001 7:08 AM
To: [EMAIL PROTECTED]
Subject: Re: Resolved, was OSPF Virtual L
Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
John Neiberger
Sent: Wednesday, October 24, 2001 7:08 AM
To: [EMAIL PROTECTED]
Subject: Re: Resolved, was OSPF Virtual Link Authentication [7:23867]
Okay, then that seems to indicate that even though I had authentication
c
Okay, then that seems to indicate that even though I had authentication
configured on both routers, one of them didn't operate correctly until I
rebooted it. That doesn't seem right. I must have been doing something
else wrong but I have no idea what it could have been. There are only
two lines
John,
Type 0 - No Authentification
Type 1 - Clear text auth.
Type 2 - MD5 auth
Sasa
John Neiberger wrote:
>
> but instead of getting a Mismatched Authentication Key error
> during debugging I was getting a Mismatched Authentication Type. It
claimed
> that one end was using Type 0 and the ot
essage-
| From: John Neiberger [mailto:[EMAIL PROTECTED]]
| Sent: Tuesday, October 23, 2001 10:06 PM
| To: [EMAIL PROTECTED]
| Subject: RE: OSPF Virtual Link Authentication [7:23867]
|
|
| Thanks. I was configuring it as you suggest. I played around with this
| more last night and I ne
PM
To: [EMAIL PROTECTED]
Subject: RE: OSPF Virtual Link Authentication [7:23867]
Thanks. I was configuring it as you suggest. I played around with this
more last night and I never got it to work. It's frustrating because it
seems so simple, yet I must be missing something that's righ
21, 2001 6:54 PM
To: [EMAIL PROTECTED]
Subject: OSPF Virtual Link Authentication
I was working on Fatkid 401 OSPF lab tonight and I could never get the
virtual link authentication to work correctly. No matter what I did,
I
would get errors stating I had a mismatched authentication key. Well,
--Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
John Neiberger
Sent: Sunday, October 21, 2001 6:54 PM
To: [EMAIL PROTECTED]
Subject: OSPF Virtual Link Authentication
I was working on Fatkid 401 OSPF lab tonight and I could never get the
virtual link authent
Chuck,
Radcom? CCO? How about checking the source, RFC 2328? ;-) It's all in
there.
From section 8.1, "Sending protocol packets:"
"The IP destination address for the packet is selected as follows. On
physical point-to-point networks, the IP destination is always set to the
address AllS
not the LSA, but the IP header itself.
in general, the OSPF hello would be sent with a destination address of
224.0.0.5, and would cross one hop, to the next router on the link.
for a virtual link packet, being as the DA might be several hops away, what
does the actual IP packet look like? Is th
then there is no
reason to fix it, unless you are a consultant and the customer is willing to
pay for it.
Ejay Hire
-Original Message-
From: Vincent Chong [mailto:[EMAIL PROTECTED]]
Sent: Friday, May 04, 2001 3:54 AM
To: [EMAIL PROTECTED]
Subject: OSPF virtual link Question [7:3154]
Hi;
Thank you.
Vincent Chong
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ort,
Authentication stops someone from plugging in a router within your
Authenticated Area & picking up LSA info.
All the best !!!
Phil
- Original Message -
From: Vincent Chong
To:
Sent: Friday, May 04, 2001 3:53 AM
Subject: OSPF virtual link Question [7:3154]
> Hi;
>
&g
I don't know what you mean by OSPF area rule, nor by the virtual link rule,
but:
In order to route from one of "not-backbone OSPF area" to another
"not-backbone OSPF area", you need to cross the backbone area (area 0). For
this reason, if one has two chained areas that do not "share" the backbone
Hi;
Due to the mail system incompatiable, the message was truncated,
I will provide more information to let you guys have more information.
Area 0 is formed by Router A and Router B
Area 1 is formed by Router B and Router C
Area 4 is formed by Router C only.
Router C set up a virtual link wi
Configuration topology is okay. In this case you have area 1 as a transit
area.
It should work fine without any authentication.
The thing to know, however, is that the configuration command is a bit
misleading:
(config-router)#area n virtual-link partner-router-id
Where n is, in this case 1.
The r
Hi;
The following scenario
[RouteA area0][area0 RouterB area1]<--[area1
RouterC area4]
|
|
|
|
|__Virtual link___|
Does this topology is valid in OSPF?
I belive that the configuration has topo
WHERE IS THE DIAGRAM
-Original Message-
From: Manish Patel [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, December 26, 2000 5:58 PM
To: [EMAIL PROTECTED]
Cc: [EMAIL PROTECTED]
Subject: OSPF virtual link question
Consider the above OSPF network. You have configured
D]
Subject: OSPF virtual link question
Consider the above OSPF network. You have configured a virtual path to
connect Area 3 with Area 0. What is your assessment of this network?
1. The network will work. However, you must configure a second
virtual link through router B to ensure th
ummm i think something is missing ? Which above OSP network ?
-Original Message-
From: Manish Patel [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, December 27, 2000 9:58 AM
To: [EMAIL PROTECTED]
Cc: [EMAIL PROTECTED]
Subject: OSPF virtual link question
Consider the above OSPF network
SPF virtual link question
Consider the above OSPF network. You have configured a virtual path to
connect Area 3 with Area 0. What is your assessment of this network?
1. The network will work. However, you must configure a second
virtual link through router B to ensure there are no rout
Ditto. No piccy.
""Manish Patel"" <[EMAIL PROTECTED]> wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
>
>
>
> Consider the above OSPF network. You have configured a virtual path to
> connect Area 3 with Area 0. What is your assessment of this network?
>
> 1. The network will
Consider the above OSPF network. You have configured a virtual path to
connect Area 3 with Area 0. What is your assessment of this network?
1. The network will work. However, you must configure a second
virtual link through router B to ensure there are no routing loops.
2. The
What attached figure? Forget something??
Mark Zabludovsky ~ CCNA, CCDA, 1/2-NP
[EMAIL PROTECTED]
"Even if I knew I had only 1 more week to live, I would still schedule
my CCIE lab. I would just have to work a little harder I guess. After all,
without any goals in life, I'm dead alread
SEE attached Figure
Consider the above OSPF network. You have configured a virtual path to co=
nnect
Area 3 with Area 0. What is your assessment of this network? =
1.The network will work. However, you must configure a second virtual li=
nk
through router B to ensure there are no routing loops
OSPF virtual link should be used as temporary solution and should not be
part of any internetwork design. The reason for that is complexity of
troubleshooting virtual links. A permanent virtual link is a sign of poorly
designed internetwork.
No real impact in the router performance
Greetings all,
Is there any disadvantages for using ospf virtual links? What kind of impact
does it have on the router?.
Thanks,
Nabil
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Thomas Peroutka wrote:
>
> when configuring a virtual link in OSPF, should I take the physical
> interface or the loopback interface as the remote router-id?
> router(config-router)# area {area-id} virtual-link {remote-router-id}
Hi Thomas,
If you have configured loopback interface, than you sh
<[EMAIL PROTECTED]>
To: [EMAIL PROTECTED] <[EMAIL PROTECTED]>
Date: Wednesday, August 30, 2000 8:02 PM
Subject: OSPF/ virtual link
>Hi all,
>
>when configuring a virtual link in OSPF, should I take the physical
>interface or the loopback interface as the remote router-id?
>
Hi all,
when configuring a virtual link in OSPF, should I take the physical
interface or the loopback interface as the remote router-id?
router(config-router)# area {area-id} virtual-link {remote-router-id}
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Thomasmailto:[EMAIL PROTECTE
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