QTech QSR-2830, Руководство пользователя

Страница: 22 / 28

Руководство пользователя
1. Configuring WAN-4G 22
www.qtech.ru
Qtech(config-if-Cellular 1/0)# apply dial-on-demand min-delay 60 max-delay 120
(3) Configure the static route:
ip route 0.0.0.0 0.0.0.0 VLAN 1 track 1
ip route 0.0.0.0 0.0.0.0 Cellular 0/0 100 track 2
ip route 0.0.0.0 0.0.0.0 Cellular 1/0 200 track 3
1.3.3
Scenario of Interesting Traffic-Triggered Dialing through Dual 4G Links
1.3.3.1 Network requirements
In this scenario, dialing is triggered by the interesting traffic over the dual 4G links. The active 4G link is used during
normal operations, and the active 4G link is in the non-dialing status when there is no interesting traffic. When there
is interesting traffic, dialing of the active 4G link is triggered. After communication of the active 4G link is interrupted,
the device can automatically detect and then enable the backup 4G link. The backup 4G link needs interesting traffic
to trigger dialing. The active 4G link is used preferably when the active 4G link is recovered from the fault.
Note: The RSR820 series mobile routers do not support the use method of this scenario.
Data center
Disaster
recovery center
In
tra
-c
ity
d
is
a
s
te
r r
e
c
o
v
e
ry
a
re
a
o
f b
ra
n
c
h
Unicom 4G
Telecom 4G
3G/4G router
Dual 4G links
W
A
N
a
re
a
o
f b
ra
n
c
h
Networking topology of interesting traffic-triggered dialing over dual 4G links
1.3.3.2 Configuration steps
(1) Configure the active 4G link for track detection:
!Here, it is assumed that the IP address of the LNS corresponding to backup 4G link 1 is 2.2.2.2.
Qtech(config)#ip rns 2
Qtech(config-ip-rns-icmp-echo)# icmp-echo 2.2.2.2 out-interface Cellular 0/0
Qtech(config-ip-rns-icmp-echo)# timeout 3000
Qtech(config-ip-rns-icmp-echo)# frequency 3000
Qtech(config-ip-rns-icmp-echo)# ntime 3
Qtech(config)# track 2 rns 2
(2) Configure the rule of interesting traffic-triggered dialing:
Qtech(config)#ip access-list extended 100
Qtech(config-ext-nacl)# 10 permit ip 124.124.124.0 0.0.0.255 any
Qtech(config-ext-nacl)# 20 permit ip 126.126.126.0 0.0.0.255 any