User`s guide

XSR User’s Guide 151
Chapter 8 Sequence of Backup Events
Configuring Dialer Services
4 With the interface down, all routes reachable through that interface
are removed from the routing table.
5 Backup function invokes the dialer to activate the configured (dial)
backup interface.
Activating the backup link can be delayed, if configured as such.
6 Backup link is up.
7 Backup link is activated.
8 Backup link is up, triggering the next action.
9 Static Backup route configured - the routing process searches its
configured Static Routing entries and installs the routes that can be
reached through the backup interface.
10 Dynamic route - the routing protocol (RIP) learns of new available
routes through the backup (dialer) interface and adds them to the IP
Routing and Forwarding Table.
11 Data starts passing over the backup link.
When the primary link is re-established the backup function will
notify the Dialer to bring down the dialer interface (bringing the
dialed line down).