"Cisco MPLS-based VPNs" & BGP Stability

Tue Apr 17 21:04:48 UTC 2001

Danny,

> which clearly impacts unicast stuff as well.

Not at all. Please provide data which would prove your "clearly"
statement. Second I would say if there is any impact this is only
implementation specific impact. In other words if your bgp
implementation does not separate different address family processing,
trie maintenance, allow for independent timers etc ... you may be right
but I am not aware of any such implementation deployed anywhere so far
:).

As a matter of fact a lot of today's mpls-vpn deployments use different
set of relflector's hardware for vpnv4 routes plus are using default
route for providing internet access for mpls-vpn customers so I don't
really see how those SPs/ISPs would impact with mpls-vpns any ipv4 bgp
Internet infrastructure or bgp stability. Total AF isolation can be also
easily achived even for inter-as mpls-vpns as well with correctly
architected design.

R.

> Danny McPherson wrote:
> 
> I thought this might be of interest to folks here, it looks
> strikingly similar to draft-behringer-mpls-security-00.txt,
> which has uni-directionally discussed on the IETF's PPVPN
> mailing list a while back.
> 
> I think a more pragmatic approach could have actually been
> useful, however, this would likely require a non-commissioned
> perspective.  IMO, things like "Hiding the Service Provider
> Core Network" aren't very practical.
> 
> I'd also like to get feedback on how folks see things like
> MPLS/BGP VPNs impacting Internet route table stability and
> convergence.  After all, simply because it's not necessarily
> envisioned (by some) to be deployed inter-domain, it does
> make heavy use of BGP, which clearly impacts unicast stuff as
> well.
> 
> -danny
> 
> ------- Forwarded Message
> 
> Date: Tue, 17 Apr 2001 12:08:01 -0400
> To: mpls-ops at mplsrc.com
> From: Christopher Lewis <chrlewis at cisco.com>
> Subject: Security on MPLS VPNs
> 
> The Mier group released a report that showed MPLS VPNs offer the same level
> of security that frame relay and ATM networks do. That report is available at
> http://www.mier.com/reports/cisco/MPLS-VPNs.pdf
> 
> - -------
> The MPLS-OPS Mailing List
> Subscribe/Unsubscribe:  http://www.mplsrc.com/mplsops.shtml
> Archive: http://www.mplsrc.com/mpls-ops_archive.shtml
> 
> ------- End of Forwarded Message