Root level
command
Command Description
This parameter is only relevant for the WAN
Fast Ethernet ports.
keepalive-icmp
failure-
retries
Set the number of consecutive failed
keepalive packets necessary to set the
interface’s keepalive status as down. The
default value is 4.
keepalive-icmp
interval
Set the interval (in seconds) between
keepalive packets. The default value is 5.
keepalive-icmp
source-address
Set the source IP address of the keepalive
packets. The default value is the interface’s
primary IP address.
keepalive-icmp
success-
retries
Set the number of consecutive successful
keepalive packets necessary to set the
interface’s keepalive status as up
keepalive-icmp
timeout
Set the timeout (in seconds) for receiving the
keepalive response. The default value is 1.
show
keepalive-icmp
Display information about the extended
keepalive settings
Dynamic CAC
Dynamic Call Admission Control (CAC) provides enhanced control over WAN bandwidth.
When Dynamic CAC is enabled on an interface, the Branch Gateway informs the MGC of the
actual bandwidth of the interface and instructs the MGC to block calls when the bandwidth is
exhausted.
Dynamic CAC is especially useful in situations where a primary link is down and a backup link
with less bandwidth than the primary link is active in its place. Without dynamic CAC, the MGC
is unaware that the interface has switched over to the backup link. Thus, the MGC is unaware
of the resulting changes in network topology and bandwidth available for the interface.
Consequently, the MGC might allow calls through the interface that require more than the
currently available bandwidth.
Note:
Dynamic CAC works in conjunction with the Avaya Aura
®
Communication Manager Call
Admission Control: Bandwidth Limitation (CAC-BL) feature. A related feature is Inter-
Gateway Alternate Routing (IGAR), which provides a mechanism to re-route bearer traffic
from the WAN to the PSTN under certain configurable conditions. For more information on
CAC-BL and IGAR, see Administrator Guide for Avaya Aura
®
Communication Manager.
WAN interfaces
280 Administering Avaya G430 Branch Gateway October 2013
Comments? infodev@avaya.com
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