NEXPEED NR304G-4W User’s Manual
NexComm Systems, Inc. 68 PAGE
Note:
The above example assumes the interconnection of 10.0.1.0 network and 10.0.2.0 network.
So refer to the below configuration in the case of the connection between the ISP and the customer.
Configuration for NR304G-4W #1
Configuration for NR304G-4W #2
(conf)# device s0 gshdsl co 2320
(conf)# device s1 gshdsl co 2320
(conf)# interface lan ip 10.0.1.1 255.255.255.0
(conf)# interface s0 ip unnumbered
(conf)# interface s1 ip unnumbered
(conf)#
ip route add 10.0.2.0 255.255.255.0 s0
(conf)#
ip route add 10.0.2.0 255.255.255.0 s1
(conf)# write config
(conf)# device s0 gshdsl rt
(conf)# device s1 gshdsl rt
(conf)# interface lan ip 10.0.2.1 255.255.255.0
(conf)# interface s0 ip unnumbered
(conf)# interface s1 ip unnumbered
(conf)#
ip route add default s0
(conf)#
ip route add default s1
(conf)# write config
Configuring Line-Backup (Redundancy route)
As can be seen above, it is possible to set multiple routes. When there are multiple paths to the
same destination, the path of the least cost is to be chosen. The speed of the link and the value of
the metric determine the cost of each path. The cost of a link depends more on the metric rather
than on the link speed. A link with greater metric cannot be chosen as a transport link how fast the
link speed is. If the link fails, 134217728 is added to the cost so that the failed link can not be
chosen as a transport route.
In the following topology, two routers, NR304G-4W #1 and NR304G-4W #2, connect back-to-
back over two SHDSL interfaces (s0 and s1) with high-level data link control (HDLC)
encapsulation. The s0 is the primary link and the s1 is used as a backup for the s0.
NR304G-4W #1
S0
S1
10.0.1.0/24
10.0.2.0/24
LAN
NR304G-4W #2
S0
S1
LAN
Network
A
Network
B
Primary Line - 2320 Kbps
Backup Line - 512 Kbps
