Re: OSPF Problem

There are certainly more qualified folks here that may speak up but I do
not look at it as extending a non backbone link. I look at it as a
method to enforce more preferred (the cloud) routing between PEs. I look
at it more or less as a pvc or a tunnel between the PEs. I'm sure that's
not the best way but it works for me to think thru it.

-Hammer-

"I was a normal American nerd"
-Jack Herer

On 07/05/2011 10:48 AM, Routing Freak wrote:
> Hey Hammer, Good one
>
> But stilll I hava a problem, Is sham link extending ur non backbone
> link to the backbone link ( ie ur Super Backbone)
>
>
> On Tue, Jul 5, 2011 at 9:12 PM, -Hammer- <bhmccie_at_gmail.com
> <mailto:bhmccie_at_gmail.com>> wrote:
>
> Dude I didn't mean to simplify it. You were asking for the
> difference and I thought a clearer explanation might have helped.
> I don't look at these as being in the same realm and that's why
> maybe I am missing where you are confused. Yes, V-Links are an
> "extension" of area 0. Whereas sham links are used to "bridge"
> together multiple PEs in the same MPLS VPN backbone. The sham link
> gets you past the default OSPF rules for selecting intra-area
> routes instead of inter-area. The sham link also allows the sites
> to communicate over the MPLS VPN instead of via any external paths
> not provided via the cloud. Does that help?
>
> -Hammer-
>
> "I was a normal American nerd"
> -Jack Herer
>
>
>
>
> On 07/05/2011 10:33 AM, Routing Freak wrote:
>> Dude i know how to configure ospf sham link . I need to know
>> about the difference technically speaking differences
>>
>> Share some theory behind both, What r the similarities and what r
>> the differences?
>>
>>
>> On Tue, Jul 5, 2011 at 8:55 PM, -Hammer- <bhmccie_at_gmail.com
>> <mailto:bhmccie_at_gmail.com>> wrote:
>>
>> This helped me understand sham links better a while back....
>>
>> http://blog.ipexpert.com/2010/01/20/introduction-to-ospf-sham-link/
>>
>> -Hammer-
>>
>> "I was a normal American nerd"
>> -Jack Herer
>>
>>
>>
>> On 07/05/2011 10:17 AM, Routing Freak wrote:
>> > Hey mates,
>> > I have a little confusion. What is the difference between
>> Sham link and
>> > Virtual Link?
>> >
>> > I know that Virtual Link is to extend ur backbone
>> > Sham link is used as a false link between two PE's . Is it
>> extending ur
>> > Area to other area and fool them that they r in the same area??
>> >
>> > Because Sham link mainly used as a virtual cable which
>> sends Intra area
>> > LSA's ( which is the Type 1 LSA's) to other PE .
>> >
>> > What does exactly the difference betwen Virtual links and
>> Sham links
>> >
>> >
>> > Blogs and organic groups at http://www.ccie.net
>> >
>> >
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Received on Tue Jul 05 2011 - 10:53:02 ART