Bad review work. What is VL ?. Er ...sorry..
Anyway we are aware about VL(Virtual Links) are similar in
nature to Sham Links,but we need not mix them up as they
are mutually exclusive.
Padma Pillay-Esnault wrote:
Abhay D.S wrote:
Yes forwarded by routers.
Well, about the demand circuit part I suggest you dont follow the RFC,
since it may or may not be treated as DEMAND circuit.(It is a
requirement
of the network to treat it as demand circuit, for example if you have
heavy load
of traffic on sham link then you can treat it as DC(demand circuit).
If you really want to use sham link optimally, you can just increase
the hello timeout
on the sham links to be large and then let it be a proper p2p link.
It is similar to hello
suppression..
--Abhay
Santosh P K wrote:
Hi Abhay,
Thanks. Are OSPF control packts just forwarded by P routers on
sham link ? RFC 4577 says that Sham link is treated as OSPF demand
circuit. In case of broad cast or NBMA configured as demand circuit
hello are not supressed as per RFC 1793 section 3.2. that means hello
are also forwarded to the endpoint just as OSPF control packets by P
router on sham link?
Sham link is a logical construct like VL and it is always a p2p.
Thanks
Padma
Thanks and regards
Santosh P K
On 3/20/07, Abhay D.S <[EMAIL PROTECTED]> wrote:
It is a SHAM...:-).
Only sham link end point needs to be enabled in OSPF and reachable
over
the multi hop
network by BGP or static means.
Means Sham Link end points must be routable over the network for it to
become UP.
Santosh P K wrote:
> Hi All,
> I have some doubts on sham link. If a sham link is configured
> between two PE's which are connected by many P routers in IP
backbone
> , then is it nessary for all the P routes to run OSPF.
> As per cisco user guid it is mentioned that
> sham link is treated as virtual link. In case of virtual link
> inbetween routers need to know OSPF protocol.
>
>
> Thanks and regards
> Santosh P K
>
> _______________________________________________
> OSPF mailing list
> [email protected]
> https://www1.ietf.org/mailman/listinfo/ospf
>
>
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