
Dial-on-Demand Implementation Notes
117353-B Rev. 00
6-13
For added network security, each remote router can have a unique PAP ID or
CHAP name but use the same demand circuit group. In this case, the router
verifies the remote router’s name in the incoming call setup message. If it does not
match a name in the caller resolution table, the router disconnects the call.
Protocol Configuration for Demand Circuit Groups
You must configure a demand circuit group using one of the following
unnumbered protocols:
• IP with either RIP, RIP II, or OSPF as the routing protocol
• IPX with RIP, SAP, and/or NLSP as the routing protocol
•Bridging
A single protocol configuration applies to all circuits in the group and can be used
by many remote nodes calling the recovery router.
Without the use of specific network addresses, the recovery router must use
routing updates to determine the data path to the remote nodes. Unlike individual
demand circuits, you can enable routing protocols for a demand circuit group
without establishing a dial-up connection. The demand circuit group and its
protocol interface are active only when the physical connection is active. Without
a physical line available, no circuit or protocol information (for example, RIP
update packets) can pass from one router to the next.
Using Demand Circuit Groups with Dial Backup Service
You can use demand circuit groups with dial backup service to dial an alternative
site if the original destination cannot be reached. For information about using
demand circuit groups and dial backup, see “Simplifying Unnumbered
Configurations with Demand Circuit Groups” on page 7-4.
Note:
When you configure a protocol for a demand circuit group, Site
Manager requires that you also configure a routing protocol.
Comentários a estes Manuais