Configuring Demand Routing for Primary ISDN Modules
Using Demand Routing for ISDN Connections
or decrease the value of the MRU, a PPP peer sets the MRU configuration
option in the Link Control Protocol (LCP). (LCP is one of the protocols in the
PPP suite. LCP is used to establish and control the PPP connection.)
To control the MRU that is negotiated between the two PPP peers, you
configure the maximum transmission unit (MTU), which defines the largest
size for a frame that the router can send over the connection. By default,
demand interfaces (which use PPP) have an MTU of 1500 bytes. If a frame
exceeds the MTU, it must be fragmented.
To successfully negotiate a PPP session, the two peers should be using the
same MTU.
To configure the MTU for all PPP connections used with demand routing,
enter:
ProCurve(config)# data-call mtu <number>
Replace <number> with a value between 64 and 1520.
To disable this setting for interfaces used with demand routing, enter:
ProCurve(config)# no data-call mtu
Configuring an ISDN Template
Some companies may want to use an ISDN template to encode the caller-
number and called-number for inbound and outbound calls. This template
allows you to configure the prefix and call type globally.
N o t e
Entering this command is optional; an ISDN template is not required for
demand routing.
To create an ISDN template, enter the following command from the global
configuration mode context:
Syntax: isdn-number-template <template id> prefix <prefix> [abbreviated |
international | national | network-specific | subscriber | unknown} <pattern>
Replace <template id> with a number between 1 and 255.
Replace <prefix> with the expected prefix for the call type. If you do not want
to specify a prefix, leave this option blank by entering double quotation marks
(""). Do not enter a space between the quotation marks. If you want to specify
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