Reference Guide

588 | Interfaces
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To return to the default of averaging the IPG, enter no ipg {shrink | ieee-802.3ae}
Parameters
Defaults
averaging the IPG
Command Modes
INTERFACE
Command
History
Usage
Information
For 10 Gigabit Ethernet interfaces only.
IPG equals 96 bits times from end of the previous packet to start of the pre-amble of the next
packet.
keepalive
c e s
On SONET interfaces, send keepalive packets periodically to keep an interface alive when it
is not transmitting data.
Syntax
keepalive [seconds]
To stop sending SONET keepalive packets, enter
no keepalive.
Parameters
Defaults
Enabled
Command Modes
INTERFACE
Command
History
Usage
Information
When you configure keepalive, the system sends a self-addressed packet out of the configured
interface to verify that the far end of a WAN link is up. When you configure
no keepalive, the
system does not send keepalive packets and so the local end of a WAN link remains up even
if the remote end is down.
ieee-802.3ae
Enter the keyword ieee-802.3ae to set the IPG to 12 (12-15) bytes (packet
size dependent)
shrink
Enter the keyword shrink to set the IPG to 8 (8-11) bytes (packet size
dependent).
pre-Version 6.1.1.0 Introduced for E-Series
seconds
(OPTIONAL) For SONET interfaces with PPP encapsulation enabled, enter the
number of seconds between keepalive packets.
Range: 0 to 23767
Default: 10 seconds
Version 8.3.7.0 Introduced on S4810
Version 8.1.1.2 Introduced on E-Series ExaScale
Version 7.6.1.0 Introduced on S-Series
Version 7.5.1.0 Introduced on C-Series
pre-Version 6.2.1.0 Introduced for E-Series