Frame Relay WAN Link with PPP Backup Sample Configuration
Configure OSPF Routing
XSR(config)#router ospf 1
+Enables OSPF with a router ID and acquires Router mode
+Configures the area ID for the specified network
+Configures another area ID for the specified network
Configure More Access Lists
The following ACLs deny any packets to or from network 192.168.1.15 as they enter or leave FastEthernet 1 interface, and permit traffic to or from subnet 192.168.2.xx while denying any other traffic.
XSR(config)#interface fastethernet 1
Configure DHCP/BOOTP Relay
XSR(config)#interface gigabitethernet 1
+Adds GigabitEthernet port 1 and acquires Interface mode
+Marks destination IP address for UDP broadcasts
Configure the Dial Backup Connection
XSR(config)#interface ser 1/0
+Adds serial port 1 and acquires Interface mode
+Enables PPP encapsulation
+Sets the IP address on the interface
+Adds a backup dialer interface
XSR(config-if<S1/0>)#backup delay 2 2
+Sets the interval that elapses after the primary interfaces fails and comes up
XSR(config)#interface serial 2/0
+Adds serial port 2 and acquires Interface mode
+Adds a dial pool member
+Sets synchronous mode
XSR(config-if<S2/0>)#no shutdown
+Enables the interface
XSR(config)#int dialer 1
+Adds dialer interface and acquires Dialer Interface mode
XSR Getting Started Guide
