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Cell Relay Retreat>MPLS-OPS Archive>month:2001-Aug> msg00188



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RE: Ships by the night....

  • From: "Robert Melancon" <robert.melancon@callisma.com>
  • Date: Fri, 17 Aug 2001 16:48:11 -0500
  • Importance: Normal
  • Resent-Date: Fri, 17 Aug 2001 19:21:04 -0400
  • To: <mpls-ops@mplsrc.com>
  • X-OriginalArrivalTime: 17 Aug 2001 21:47:50.0104 (UTC) FILETIME=[42A06580:01C12766]

>From the MPLS Resource Center FAQ:

"c. What is "Ships in the night"?
Some vendors support the running of MPLS and ATM in the same device.
Generally speaking, these two processes run separately.  A change in an MPLS
path has no bearing on ATM virtual circuits.  This practice is commonly
referred to "ships in the night" since the two processes act alone.
However, in some cases, there is some interaction between the two processes.
For example, some vendors support a mechanism whereby a reservation of
resources by a label switch path is detected by the ATM control mechanism to
avoid resource conflicts."

I have implemented this type of architecture on the BPX. You can divide the
available resources between the two configurations and eliminate the
conflicts.

Robert Melancon
Callisma, Inc.
robert.melancon@callisma.com


-----Original Message-----
From: R S [mailto:rs2547@yahoo.com]
Sent: Friday, August 17, 2001 1:22 AM
To: mpls-ops@mplsrc.com
Subject: Ships by the night....


Hi,
   I know this means a box having MPLS+ATM
capabilities. Just curious why such a name though....
Know I am digressing, but would appreciate an answer.


=====
--RS

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