The MPLS WG Archive

[chris@bravara.com]

Bryan -
Control-driven:

In the control-driven model, label bindings are created when control
information is received by an MPLS-enabled node. Labels are assigned in
response to the standard processing of routing protocol data, control data
(i.e. RSVP), or in response to static configuration via the network
admin/off-line tool. Labels are assigned and distributed before the arrival
of user data flows, thus user data can be label swapped immediately upon
arrival.

Data-driven:

The data-driven model is currently not supported by MPLS. In the data-driven
model, label bindings are created when user data packets are received by an
MPLS-enabled node. A MPLS-enabled node can either create a label binding as
soon as it sees the first packet in a user data flow or wait until it has
seen a specified number of packets in the particular flow.

I hope this helps.



----- Original Message -----
From: "Bryan W" <bryan555@hotmail.com>
To: <mpls-ops@mplsrc.com>; <mpls@UU.NET>
Sent: Monday, July 09, 2001 12:21 PM
Subject: Control driven vs. data driven


> Hi,
>
> Can someone give me definitions and examples of control driven vs data
> driven label bindings?  Thanks,
>
> Bryan
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