Avaya Configuring Dial Services Manual do Utilizador Página 83

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Dial-on-Demand Implementation Notes
114062 Rev. A 4-7
Configure the router to handle oversubscription of lines.
If you do not have enough lines to accommodate the number of circuits, you
can enable an oversubscription timer. This timer determines the frequency
that the router retries a connection for routing updates if the previous attempt
failed. The router keeps a list of circuits requesting connections and tries to
establish these connections when the timer expires.
To configure the oversubscription timer, you must use the Technician
Interface. This attribute is not available through Site Manager. The attribute
entry is wfSwservOptsEntry.wfSwservOptsOverSubRetryTimer. The default
setting is two minutes; the maximum value is 1440 minutes.
Refer to Configuring IP Services for information about RIP and
Configuring IPX Services for information on RIP/SAP.
Protocol Prioritization
When you configure a router, you can prioritize the different types of traffic sent
across a synchronous line. This process is called protocol prioritization. Being
able to prioritize traffic is important for your time-sensitive applications.
For example, a user at Router A participating in a Telnet session with Router B
requires a more immediate response than does a user at Router A performing a file
transfer with Router B.
When you configure a demand circuit, the router automatically enables protocol
prioritization because PPP requires priority for control messages.
Although protocol prioritization is set automatically, you still need to configure
priorities and filters. For more information about protocol prioritization see
Configuring Traffic Filters and Protocol Prioritization.
Note: Do not configure protocol prioritization for circuits running PPP
multilink, for example, bandwidth-on-demand circuits supporting a congested
demand circuit.
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