Avaya G250 Administration page 170

Configuring WAN interfaces
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 Communication Manager Call
Note:
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's Guide for Avaya
Communication Manager, 555-233-506.
You can enable dynamic CAC on the following interface types:
Fast Ethernet
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Serial (PPP or frame relay)
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GRE Tunnel
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VLAN
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Note:
Since VLAN interfaces are always up, configuring dynamic CAC on a VLAN
Note:
interface provides a means to have a default dynamic CAC bandwidth.
Use the dynamic-cac bbl command in interface context to enable dynamic CAC on the
interface and set the maximum bandwidth for the interface. The dynamic-cac bbl command
includes the following parameters:
bbl — The bearer bandwidth limit (kbps). The MGC enforces this as the maximum
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bandwidth for the interface. If you set the bbl to 0, the interface can only be used for
signalling.
activation priority (optional) — If dynamic CAC is activated on more than one
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active interface, the G250/G350 reports the bearer bandwidth limit of the interface with the
highest activation priority. You can set the activation priority to any number between 1 and
255. The default activation priority is 50.
The following example sets dynamic CAC on Fast Ethernet interface 10/2, with a bearer
bandwidth limit of 128 and an activation priority of 100:
G350-001# interface FastEthernet 10/2
G350-001(super-if:FastEthernet 10/2)# dynamic-cac 128 100
Use the show dynamic-cac command to display bandwidth information about the interface.
The show dynamic-cac command displays the following information:
Current RBBL — The current actual bandwidth available on the interface.
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Last event — The amount of time since the most recent update by the CAC process.
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Last event BBL — The interface's bandwidth at the time of the most recent update by the
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CAC process.
170 Administration for the Avaya G250 and Avaya G350 Media Gateways