MSR Series Dynamic Route Backup configuration

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功能需求

MSR Series

Dynamic Route Backup configuration

 

Keywords: MSR; Dialer; Dynamic Route Backup

 

1. Customer requirements

Customer uses leased line as its main link between branches and headquarter, and use PSTN dialer link as backup. Branches and headquarter running OSPF to exchange routes on the main link, the branch monitor the route 10.6.0.0/24 and 10.66.0.0/24 learned by OSPF, if these routes turn to inactive, it will trigger the dialer process on backup link to recover the communication towards 10.6.0.0/24 and 10.66.0.0/24. Generally, the OSPF cost on backup link is larger than the main link.

Devices list: 2 MSR routers

2. Topology

3. Active configuration

Branch configuration

#

 // permit ip flow trigger the dialer process

 dialer-rule 1 ip permit

 // define the standby routing-rule to monitor the 10.6.0.0/24 and 10.66.0.0/24

 standby routing-rule 1 ip 10.6.0.1 255.255.255.0

 standby routing-rule 1 ip 10.66.0.1 255.255.255.0

#

// the Analogmodem interface connect to the PSTN

interface Analogmodem2/0

 // specify the async mode to protocol, default is flow

 async mode protocol

 link-protocol ppp

 // specify ip address of this interface

 ip address 5.6.1.5 255.255.255.252

 // enable the circular dialer function

 dialer enable-circular

 // specify the dialer-group, equals to dialer-rule 1 defined before

 dialer-group 1

 // specify the dialer-route, which are same with standby routing-rule defined before

 dialer route ip 10.6.0.0 mask 24 6666

 dialer route ip 10.66.0.0 mask 24 6666

 // specify the standby routing-group 1

 standby routing-group 1

#

interface Ethernet0/0

 port link-mode route

 ip address 10.5.0.1 255.255.255.0

#

// the main link interface

interface Ethernet0/1

 port link-mode route

 ip address 5.6.0.5 255.255.255.252

#

// OSPF configuration

ospf 1 router-id 5.5.5.5

 area 0.0.0.0  

  network 5.6.0.0 0.0.255.255

  network 10.5.0.0 0.0.0.255

#

// configr user-interface tty 33, this number can be check with dispaly user-interface command, you will find the Analogmodem2/0鈥檚 according tty number

user-interface tty 33

 // enable this tty鈥?/span>s bi-direction modem function

 modem both

#

鎬婚儴閰嶇疆

#

 // permit ip flow trigger the dialer process

 dialer-rule 1 ip permit

#

// headquarter is the response side, not need configuring the dialer number

interface Analogmodem1/0

 async mode protocol

 link-protocol ppp

 ip address 5.6.1.6 255.255.255.252

 dialer enable-circular

 dialer-group 1

#

// internal interface, the source of 10.6.0.0/24

interface Ethernet0/0

 port link-mode route

 ip address 10.6.0.1 255.255.255.0

#

// the main link interface

interface Ethernet0/1

 port link-mode route

 ip address 5.6.0.6 255.255.255.252

#

// internal interface, the source of 10.66.0.0/24

interface Ethernet0/2

 port link-mode route

 ip address 10.66.0.1 255.255.255.0

#

// OSPF configuration

ospf 1 router-id 6.6.6.6

 area 0.0.0.0

  network 5.6.0.0 0.0.255.255

  network 10.0.0.0 0.255.255.255

#

// tty configuration

user-interface tty 17

 modem both

#

1. Some advice

1) The modem interface must be set to async mode protocol, for the default mode flow is not for forwarding ip flow.

2) The tty interface must be enable the modem function.

案例信息

案例类型:典型配置
案例号:KMS - 15204
创建时间:2008年9月4日
更新时间:2008年9月4日
发布时间:2008/9/4 4:55:13
文章密级:游客可见
有效期:长期有效
发布者:丘子隽 [q04986]
点击次数:493
评论平均得分:0
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产品线:中低端路由器
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技术分类:拨号技术 VPN

常用操作
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