[j-nsp] Interfaces, deactivate vs disable

[Eric Van Tol]

Disable is especially useful in the case of monitoring.  Deactivate
removes the interface from the config (same as physically pulling the
card out), rendering a previously monitored (SNMP, etc.) port or
interface "gone", thereby causing alarms in your monitoring station.
Reactivation, if I am correct, could cause the SNMP-index number to
change, thereby requiring a change in the NMS(es).

Disabling just disables the interface (shutdown), which still provides
your NMS a point to monitor, albeit zero traffic on that interface.

In addition, if you are an NSP, you may have customers that move from
one medium to another on the same router.  The ability to deactivate can
offer you the option of pre-building the configuration of the interface
if they want to keep the same IPs.

-----Original Message-----
From: juniper-nsp-bounces at puck.nether.net
[mailto:juniper-nsp-bounces at puck.nether.net] On Behalf Of Raymond,
Steven
Sent: Wednesday, June 08, 2005 11:17 AM
To: juniper-nsp at puck.nether.net
Subject: [j-nsp] Interfaces, deactivate vs disable

I don't quite understand the difference between deactivate and disable
on an interface, from below:

<https://www.juniper.net/techpubs/software/junos/junos60/swconfig60-gett
ing-started/html/cli-configuration-mode43.html>

"In some portions of the configuration hierarchy, you can include a
disable statement to disable functionality. One example is disabling an
interface by including the disable statement at the [edit interface
interface-name] hierarchy level. When you deactivate a statement, that
specific object or property is completely ignored and is not applied at
all when you issue a commit command. When you disable a functionality,
it is activated when you issue a commit command but is treated as though
it is down or administratively disabled."

Can anyone please give an example of where it would be better to use
either of disable or deactivate, specifically as it pertains to downing
an interface?

Thanks


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