Re: de-peering and peering

[Stephane Bortzmeyer <bortzmeyer () gitoyen net>]

On Wednesday 3 April 2002, at 1 h 9, 
"Shashi Kumar" <shashi.kumar () wipro com> wrote:

> Let us say Network A has a peering Agreement with Network B. Now let us 
> say Network X wants to reach Network B. X and B do not have a peering 
> agreement. Can Network A use the peering Link between A nd B to route 
> the traffic of network X.

In the most common sense of the word "peering", no, it cannot.

> What are the mechanisms in place in B's network to detect that Network A 
> is transiting the data( in this case network B looser) from Network X?

Network monitoring, statistics, sometime actual packet filters fed from RADB. 
Sometimes pure luck: one day, a traceroute will reveal the trick.

> Basically what I am trying to arrive at is: Suppose the peering 
> arrangement between A and B were to be for data originating from A and B 
> only(and not transited). Can A or B misuse the peering agreement by 
> masquerading transit data as if its originating from its own n/w?

Technically yes (some technical measures can be used against that). But it is a violation of the typical peering 
agreement and it will raise trouble :-)