[j-nsp] as-path rewrite

[Rafal Szarecki (WA/EPO)]

Sorin. You are form GTS.

> On 9/27/05, Rafal Szarecki (WA/EPO) 
> <rafal.szarecki at ericsson.com> wrote:
> > Sorin,
> >
> > The juniper "set loops 2" is the same as ciscos "allow-in". 
> So What do not use them if you use allows-in?
> 
> I didn't find a per-neighbor setting of loops.
> 
> > The other concept is to as customer to:
> > do not advertize prefixes lerned from VPN to Internet 
> connection (wuith AS1 on path)
> > create aggregate route on CE in AS2 which represent whole AS1.
> 
> AS1 has 2 transit providers (AS2 is one of them). If AS2 aggregates
> the prefix received from AS1, wouldn't there be a problem that the
> same prefix have origin in AS1 and AS2?

Yes, that is complication.

> The ugly solution that the customer agreed to configure on his routers
> was an EBGP Multihop session between 2 routers in AS1/AS2.

I scare that this is best solution...
Let's think about CoC VPN. withh LSP tunnel connecting AS1 to AS2. In this case there will be not a risk for routing inconsistency in VRF against what is announced in multihop BGP.
The CoC is as name pointing solution for Carriers. And AS2 is a carrier in this case.
An last but not least you relax VRF from Internet feed.


> 
> > Sorin, are you work for ROMTELECOM?
> 
> No. Why do you ask?
Last week I work in Bucaresti for ROMTELECOM account. But realyy AFAIK thay have no M/T in network.
If when I comme back to Romania we can go for beer/wine. Do you think?

> 
> >
> 
> PS: Brick asks you if you threw his jacket :)

Of course.

> 
Rafal Jan Szarecki JNCIE #136
Skype: callto://Rafal_Szarecki <callto://Rafal_Szarecki/>