Chapter 10 - WAN Link Protocols | 171 |
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IP Multicast
This is the IP multicast address. This address is the SMDS group address assigned by the service provider and follows the E.164 format. The multicast address must start with the letter E and be followed by at least 10 digits. The missing digits will be filled in with F. The address should be entered exactly as it is assigned by the service provider.
Polling Frequency
This number specifies the interval that the router uses to poll the SMDS switch. The interval is specified in seconds and must be between 0 and 30.
If the switch does not respond to the polling, the router will eventually declare the SMDS link down and start dropping packets designated for that interface. A value of 0 will disable the polling mechanism. Disabling the polling mech- anism will automatically declare the SMDS link up.
ϖNote: The keepalive mechanism is also referred to as "heartbeat exchange" in SMDS literature.
PPP Options Dialog Box
PPP Options Dialog Box
You can access the PPP Options Dialog Box by selecting On Demand PPP Link or Dedicated PPP Link from the Link Type pulldown in the Link Configuration: WAN Dialog Box (under WAN/Link Configuration), and then clicking on the PPP Options button at the bottom of the dialog box.
