背景：路由器MSR3600-28， 有3路宽带进线，用户设备上网流量随机选择宽带出口，宽带故障掉线后，能自动切换宽带出口。
配置过程：首先配置好单路宽带正常上网，再配置2路宽带上网，最后是配置3路宽带上网。
配置单：
BUG： 如果配置两条宽带，在机器关机时，只是接入一条宽带，路由启动后，不能正常打开网页，但是能打开mail.163.com并登陆邮箱，还能够上线QQ。当插入两根宽带是，能正常上网。拔掉一根之后不能正常上网，重启后也不能恢复。
track 1 interface GigabitEthernet 0/0 physicaltrack 2 interface GigabitEthernet 0/3 physicalundo ip route-static 0.0.0.0 0 Dialer0undo ip route-static 0.0.0.0 0 Dialer1ip route-static 0.0.0.0 0 Dialer0 track 1ip route-static 0.0.0.0 0 Dialer1 track 2
配置单：
# version 7.1.064, Release 0707P16# sysname MSR3600#track 1 interface GigabitEthernet0/0 physical#track 2 interface GigabitEthernet0/2 physical#track 3 interface GigabitEthernet0/1 physical#track 4 interface GigabitEthernet0/3 physical#track 5 interface GigabitEthernet0/4 physical#track 6 interface GigabitEthernet0/5 physical#track 7 interface GigabitEthernet0/6 physical#track 8 interface GigabitEthernet0/7 physical#track 9 interface GigabitEthernet0/8 physical#track 10 interface GigabitEthernet0/9 physical# dialer-group 1 rule ip permit dialer-group 2 rule ip permit dialer-group 3 rule ip permit dialer-group 4 rule ip permit dialer-group 5 rule ip permit dialer-group 6 rule ip permit dialer-group 7 rule ip permit dialer-group 8 rule ip permit dialer-group 9 rule ip permit dialer-group 10 rule ip permit# dhcp enable dhcp server always-broadcast# dns proxy enable dns server XX.191.XXX.196 dns server XX.191.XXX.206 dns server XX.12.33.227 dns server XX.12.1.227# undo password-recovery enable#vlan 1#dhcp server ip-pool vlan-interface1 gateway-list 192.168.0.1 network 192.168.0.0 mask 255.255.254.0 address range 192.168.0.1 192.168.1.254 dns-list 192.168.0.1#controller Cellular0/0#interface Aux0#interface Dialer0 ppp chap password cipher $c$3$/8AY3eYbAub7XXXlD+F5kbxlpNK2LcpvdjRf ppp chap user XXXXX ppp ipcp dns admit-any ppp ipcp dns request ppp pap local-user XXXXX password cipher $c$3$D9ntfQdSGGSXXXXpcnK4EK1uJw6OW04wpbzv dialer bundle enable dialer-group 1 ip address ppp-negotiate nat outbound#interface Dialer1 ppp chap password cipher $c$3$rj5VXXXXQD657lKSOSvCjyIDF/1xFrbT8g== ppp chap user XXXXXXX ppp ipcp dns admit-any ppp ipcp dns request ppp pap local-user XXXX password cipher $c$3$YH0mK5iqpXXX+hWlT/t41ytHlVWWVwurnA== dialer bundle enable dialer-group 2 ip address ppp-negotiate nat outbound#interface Dialer2 ppp chap password cipher $c$3$oysOkhtXXXkL0bPu3Eknx5drxdO2A== ppp chap user 111 ppp ipcp dns admit-any ppp ipcp dns request ppp pap local-user 111 password cipher $c$3$yQHrHXXXTU7lkkyiTU+e3O8Dfnh1dA== dialer bundle enable dialer-group 3 ip address ppp-negotiate nat outbound#interface Dialer3 ppp chap password cipher $c$3$el6CFL7gfLXXXtEgviHxbXO3QZLXGQ== ppp chap user 111 ppp ipcp dns admit-any ppp ipcp dns request ppp pap local-user 111 password cipher $c$3$V8XXXuEi+KMtHkaR/EWcHO1bSb89VQ== dialer bundle enable dialer-group 4 ip address ppp-negotiate nat outbound#interface Dialer4 ppp chap password cipher $c$3$vNITgsXXXU1LiHGUGIfGuWNgVo4CA== ppp chap user 1111 ppp ipcp dns admit-any ppp ipcp dns request ppp pap local-user 1111 password cipher $c$3$VV33XXXNPtYnWHRQoZ+S0iy0U0nVA== dialer bundle enable dialer-group 5 ip address ppp-negotiate nat outbound#interface Dialer5 ppp chap password cipher $c$3$0Oht5wslvxXXXXnx2bLGDdz/fmpbMA== ppp chap user 111 ppp ipcp dns admit-any ppp ipcp dns request ppp pap local-user 111 password cipher $c$3$+XXX51RwTFrKOtj7H5e6QHRmJKBxw== dialer bundle enable dialer-group 6 ip address ppp-negotiate nat outbound#interface Dialer6 ppp chap password cipher $c$3$Hw8OHk74XXnoa2fqr9MjMLNvG2t7A== ppp chap user 111 ppp ipcp dns admit-any ppp ipcp dns request ppp pap local-user 111 password cipher $c$3$XX0BXM7O1V0FFMBu6f0qop3pNxew== dialer bundle enable dialer-group 7 ip address ppp-negotiate nat outbound#interface Dialer7 ppp chap password cipher $c$3$dtP7mC4BMXXOP0+3PfqekDIQMN+Q== ppp chap user 111 ppp ipcp dns admit-any ppp ipcp dns request ppp pap local-user 111 password cipher $c$3XXJ2pkHqpdapDRfRzm0xHCU+P2hwIA== dialer bundle enable dialer-group 8 ip address ppp-negotiate nat outbound#interface Dialer8 ppp chap password cipher $c$3$yHZdKgXXUzVGQCyZvhbA3MRh9Q== ppp chap user 111 ppp ipcp dns admit-any ppp ipcp dns request ppp pap local-user 111 password cipher $c$3$/KDUpvvXXF/2pPd7bDy8ELb6jdpHw== dialer bundle enable dialer-group 9 ip address ppp-negotiate nat outbound#interface Dialer9 ppp chap password cipher $c$3$ndehLaaBxgXXT78UFO0CDxVvIPg== ppp chap user 111 ppp ipcp dns admit-any ppp ipcp dns request ppp pap local-user 111 password cipher $c$3$zLchZJKp8g30ATAXQJEk+LQD0hpkQw== dialer bundle enable dialer-group 10 ip address ppp-negotiate nat outbound#interface NULL0#interface Vlan-interface1 ip address 192.168.0.1 255.255.254.0 tcp mss 1280#interface GigabitEthernet0/0 port link-mode route description Multiple_Line pppoe-client dial-bundle-number 0#interface GigabitEthernet0/1 port link-mode route description Multiple_Line pppoe-client dial-bundle-number 2#interface GigabitEthernet0/2 port link-mode route description Multiple_Line pppoe-client dial-bundle-number 1#interface GigabitEthernet0/3 port link-mode route description Multiple_Line pppoe-client dial-bundle-number 3#interface GigabitEthernet0/4 port link-mode route description Multiple_Line pppoe-client dial-bundle-number 4#interface GigabitEthernet0/5 port link-mode route description Multiple_Line pppoe-client dial-bundle-number 5#interface GigabitEthernet0/6 port link-mode route description Multiple_Line pppoe-client dial-bundle-number 6#interface GigabitEthernet0/7 port link-mode route description Multiple_Line pppoe-client dial-bundle-number 7#interface GigabitEthernet0/8 port link-mode route description Multiple_Line pppoe-client dial-bundle-number 8#interface GigabitEthernet0/9 port link-mode route description Multiple_Line pppoe-client dial-bundle-number 9#interface GigabitEthernet0/27 port link-mode route#interface GigabitEthernet0/10 port link-mode bridge#interface GigabitEthernet0/11 port link-mode bridge#interface GigabitEthernet0/12 port link-mode bridge#interface GigabitEthernet0/13 port link-mode bridge#interface GigabitEthernet0/14 port link-mode bridge#interface GigabitEthernet0/15 port link-mode bridge#interface GigabitEthernet0/16 port link-mode bridge#interface GigabitEthernet0/17 port link-mode bridge#interface GigabitEthernet0/18 port link-mode bridge#interface GigabitEthernet0/19 port link-mode bridge#interface GigabitEthernet0/20 port link-mode bridge#interface GigabitEthernet0/21 port link-mode bridge#interface GigabitEthernet0/22 port link-mode bridge#interface GigabitEthernet0/23 port link-mode bridge#interface GigabitEthernet0/24 port link-mode bridge#interface GigabitEthernet0/25 port link-mode bridge#interface GigabitEthernet0/26 port link-mode bridge# scheduler logfile size 16#line class aux user-role network-admin#line class tty user-role network-operator#line class vty user-role network-operator#line aux 0 user-role network-admin#line vty 0 63 authentication-mode scheme user-role network-operator# ip route-static 0.0.0.0 0 Dialer0 track 1 ip route-static 0.0.0.0 0 Dialer1 track 2 ip route-static 0.0.0.0 0 Dialer2 track 3 ip route-static 0.0.0.0 0 Dialer3 track 4 ip route-static 0.0.0.0 0 Dialer4 track 5 ip route-static 0.0.0.0 0 Dialer5 track 6 ip route-static 0.0.0.0 0 Dialer6 track 7 ip route-static 0.0.0.0 0 Dialer7 track 8 ip route-static 0.0.0.0 0 Dialer8 track 9 ip route-static 0.0.0.0 0 Dialer9 track 10# password-control enable undo password-control aging enable undo password-control history enable password-control length 6 password-control login-attempt 3 exceed lock-time 10 password-control update-interval 0 password-control login idle-time 0 password-control complexity user-name check#domain system# domain default enable system#role name level-0 description Predefined level-0 role#role name level-1 description Predefined level-1 role#role name level-2 description Predefined level-2 role#role name level-3 description Predefined level-3 role#role name level-4 description Predefined level-4 role#role name level-5 description Predefined level-5 role#role name level-6 description Predefined level-6 role#role name level-7 description Predefined level-7 role#role name level-8 description Predefined level-8 role#role name level-9 description Predefined level-9 role#role name level-10 description Predefined level-10 role#role name level-11 description Predefined level-11 role#role name level-12 description Predefined level-12 role#role name level-13 description Predefined level-13 role#role name level-14 description Predefined level-14 role#user-group system#local-user admin class manage service-type telnet http authorization-attribute user-role network-admin# ip http enable#wlan global-configuration firmware-upgrade disable#wlan ap-group default-group vlan 1#return