Avaya Configuring Dial Services Manual de usuario Pagina 147

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Dial-on-Demand Implementation Notes
114062 Rev. B 5-19
Traffic Filters
To prevent routing updates and protocol-specific messages from keeping the
circuit active, you can configure traffic filters that specify which packets are
permitted across an established dial-up line and which packets are prevented from
activating a dial-up line.
Traffic filters enable the router to selectively relay or drop a packet, frame, or
datagram, based on standard protocol fields or user-defined fields.
If you implement inbound filters, the router drops unwanted packets at the
interface where it receives data. By filtering incoming data, you can prevent
unwanted packets from going to the destination interface.
If you implement outbound filters, the router drops unwanted packets before
dialing a line. The router continues to filter the data so that unwanted packets do
not keep the circuit active.
You can also filter outbound packets to prevent the inactivity time from resetting.
For example, RIP packets can always be sent, but if no other data is sent, the
inactivity time expires and the line is deactivated.
To configure traffic filters, see Configuring Traffic Filters and Protocol
Prioritization.
Data Compression
Site Manager allows you to configure the Bay Networks proprietary data
compression protocol, WCP, over any PPP demand circuit. Enabling compression
improves bandwidth efficiency by eliminating redundant strings in data streams.
This, in turn, improves network response times and yields line-cost savings.
To implement data compression, you must open the appropriate demand circuits
window. Once a demand circuit exists, you will see a Protocols button in the
window’s top left corner. WCP is one of the protocols you can choose. Note that
WCP does not work with any other router’s compression protocol. Refer to
Chapter 9 for more specific instructions on how to configure protocols.
To learn more about data compression, see Configuring Data Compression
Services.
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