Dynamic Routing Standby Configuration Example Iv - 3Com 3C13636 Configuration Manual

3Com Router 3000 Ethernet Family
Configuration Guide

2.3.4 Dynamic Routing Standby Configuration Example IV

I. Network requirements
Router A and Router B are connected through a frame relay network. At the same time,
they are connected through an ISDN network for dial-up backup.
In dynamic routing standby, Router A is working as the control device to monitor routes
destined for three network segments, 10.0.0.1/8, 11.0.0.1/8, and 12.0.0.1/8, on Router
B.
In normal cases, Router A and Router B communicate through the primary link or the
frame relay link. When all routes to the monitored network segments go down, the
system dials the backup link.
II. Network diagram
S0/0/0:1.0.0.1/8 S0/0/0:1.0.0.1/8
Router A Router A
Figure 2-4 Network diagram for dynamic routing standby III
III. Configuration procedure
1) Configure Router A
# Configure a dialer ACL.
[RouterA] system
[RouterA] dialer-rule 1 ip permit
# Configure a dynamic routing standby group and assign three monitored network
segments to it.
[RouterA] standby routing-rule 1 ip 10.0.0.0 255.0.0.0
[RouterA] standby routing-rule 1 ip 11.0.0.0 255.0.0.0
[RouterA] standby routing-rule 1 ip 12.0.0.0 255.0.0.0
# Form a pri-set on the CE interface.
[RouterA] controller E1 1/0/0
[RouterA-E1 1/0/0] pri-set
[RouterA-E1 1/0/0] quit
# Encapsulate interface Serial 0/0/0 with frame relay.
[RouterA] interface serial0/0/0
[RouterA-Serial0/0/0] ip address 1.0.0.1 255.0.0.0
DLCI:100 DLCI:100 FR FR
Number: Number: ISDN PRI link ISDN PRI link
660330 660330
S1/0/0:15:2.0.0.1/8 S1/0/0:15:2.0.0.1/8 S1/0/0:15:2.0.0.2/8 S1/0/0:15:2.0.0.2/8
3Com Corporation
Chapter 2 Dynamic Routing Standby
S0/0/0:1.0.0.2/8 S0/0/0:1.0.0.2/8
DLCI:100 DLCI:100
Number: Number:
660220 660220
Router B Router B
2-12
Eth2/0/0:10.0.0.1/8 Eth2/0/0:10.0.0.1/8
Eth3/0/0:11.0.0.1/8 Eth3/0/0:11.0.0.1/8
Eth4/0/0:12.0.0.1/8 Eth4/0/0:12.0.0.1/8