尝试配置HWIC-3G-HSPA

Question

我正在尝试配置几条思科1941的线路。这两个路由器都是相同的。分别作为一个HWIC-1T (智能串行接口)和一个HWIC- 3G -HSPA3G接口。这些路由器将被发送到远程站点。我们有到其中一个站点的连接，但是如果远程站点A下降了，我们就失去了与远程站点B的连接。

HWIC-1T是使用帧中继连接两个远程站点的主要广域网接口。

我们希望HWIC-3G-HSPA能够用于从总部到远程站点B的直接连接，并且HWIC-3G-HSPA在帧中继中断时用于远程站点之间的通信(经常发生)。

我最初尝试使用EIGRP进行动态路由，但是在我的实验室设置的笔记本电脑-1941-1941-笔记本电脑，我无法获得端到端的连接。我后来决定了静态路由，并获得了端到端连接，但只有通过帧中继，而不是HWIC-3G-HSPA。

远程站点A的净化运行配置：

version 15.1
service tcp-keepalives-in
service tcp-keepalives-out
service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption
service udp-small-servers
service tcp-small-servers
!
hostname remoteA
!
boot-start-marker
boot-end-marker
!
!
logging buffered 51200 warnings
enable secret 5 censored
!
no aaa new-model
clock timezone wst 8 0
!
no ipv6 cef
ip source-route
ip cef
!
ip domain name yourdomain.com
multilink bundle-name authenticated
!
chat-script gsm "" "ATDT*98*1#" TIMEOUT 30 "CONNECT"
!
username admin privilege 15 secret 5 censored
!
controller Cellular 0/1
!
interface Embedded-Service-Engine0/0
 no ip address
 shutdown
!
interface GigabitEthernet0/0
 ip address 192.168.2.5 255.255.255.0
 duplex auto
 speed auto
!
interface GigabitEthernet0/1
 no ip address
 shutdown
 duplex auto
 speed auto
!
interface Serial0/0/0
 ip address 10.1.1.2 255.255.255.252
 encapsulation frame-relay
 cdp enable
 frame-relay interface-dlci 16
 frame-relay lmi-type ansi
!
interface Cellular0/1/0
 ip address negotiated
 encapsulation ppp
 dialer in-band
 dialer idle-timeout 2147483
 dialer string gsm
 dialer-group 1
 async mode interactive
 ppp chap hostname censored
 ppp chap password 7 censored
 cdp enable
!
interface Cellular0/1/1
 no ip address
 encapsulation ppp
!
interface Dialer0
 no ip address
!
ip forward-protocol nd
!
no ip http server
no ip http secure-server
!
ip route 0.0.0.0 0.0.0.0 Serial0/0/0 210 permanent
ip route 0.0.0.0 0.0.0.0 Cellular0/1/0 220 permanent
ip route 172.31.2.0 255.255.255.0 Cellular0/1/0 permanent
ip route 192.168.3.0 255.255.255.0 10.1.1.1 permanent
ip route 192.168.3.0 255.255.255.0 Cellular0/1/0 210 permanent
!
access-list 1 permit any
dialer-list 1 protocol ip list 1
!
control-plane
!
line con 0
 logging synchronous
 login local
line aux 0
line 2
 no activation-character
 no exec
 transport preferred none
 transport input all
 transport output pad telnet rlogin lapb-ta mop udptn v120 ssh
 stopbits 1
line 0/1/0
 exec-timeout 0 0
 script dialer gsm
 login
 modem InOut
 no exec
 transport input all
 rxspeed 7200000
 txspeed 5760000
line 0/1/1
 no exec
 rxspeed 7200000
 txspeed 5760000
line vty 0 4
 access-class 23 in
 privilege level 15
 password 7 censored
 login local
 transport input all
line vty 5 15
 access-class 23 in
 privilege level 15
 password 7 censored
 login local
 transport input all
line vty 16 1370
 password 7 censored
 login
 transport input all
!
scheduler allocate 20000 1000
end

远程站点B的经过消毒的运行配置：

version 15.1
service tcp-keepalives-in
service tcp-keepalives-out
service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption
service udp-small-servers
service tcp-small-servers
!
hostname remoteB
!
boot-start-marker
boot-end-marker
!
logging buffered 51200 warnings
enable secret 5 censored
!
no aaa new-model
clock timezone wst 8 0
!
no ipv6 cef
ip source-route
ip cef
!
no ip domain lookup
ip domain name yourdomain.com
multilink bundle-name authenticated
!
chat-script gsm "" "ATDT*98*1#" TIMEOUT 30 "CONNECT"
username admin privilege 15 secret 5 censored
!
controller Cellular 0/1
!
interface Embedded-Service-Engine0/0
 no ip address
 shutdown
!
interface GigabitEthernet0/0
 ip address 192.168.3.1 255.255.255.0
 duplex auto
 speed auto
!
interface GigabitEthernet0/1
 no ip address
 shutdown
 duplex auto
 speed auto
!
interface Serial0/0/0
 ip address 10.1.1.1 255.255.255.252
 encapsulation frame-relay
 clock rate 2000000
 cdp enable
 frame-relay interface-dlci 16
 frame-relay lmi-type ansi
 frame-relay intf-type dce
!
interface Cellular0/1/0
 ip address negotiated
 encapsulation ppp
 dialer in-band
 dialer idle-timeout 2147483
 dialer string gsm
 dialer-group 1
 async mode interactive
 ppp chap hostname censored
 ppp chap password 7 censored
 ppp ipcp dns request
 cdp enable
!
interface Cellular0/1/1
 no ip address
 encapsulation ppp
!
interface Dialer0
 no ip address
!
ip forward-protocol nd
!
no ip http server
no ip http secure-server
!
ip route 0.0.0.0 0.0.0.0 Serial0/0/0 210 permanent
ip route 0.0.0.0 0.0.0.0 Cellular0/1/0 220 permanent
ip route 172.31.2.0 255.255.255.0 Cellular0/1/0 permanent
ip route 192.168.2.0 255.255.255.0 10.1.1.2 permanent
ip route 192.168.2.0 255.255.255.0 Cellular0/1/0 210 permanent
!
kron occurrence PING in 1 recurring
 policy-list ICMP
!
access-list 1 permit any
dialer-list 1 protocol ip list 1
!
control-plane
!
line con 0
 logging synchronous
 login local
line aux 0
line 2
 no activation-character
 no exec
 transport preferred none
 transport input all
 transport output pad telnet rlogin lapb-ta mop udptn v120 ssh
 stopbits 1
line 0/1/0
 exec-timeout 0 0
 script dialer gsm
 login
 modem InOut
 no exec
 transport input all
 rxspeed 7200000
 txspeed 5760000
line 0/1/1
 no exec
 rxspeed 7200000
 txspeed 5760000
line vty 0 4
 access-class 23 in
 privilege level 15
 password 7 censored
 login
 transport input all
line vty 5 15
 access-class 23 in
 privilege level 15
 password 7 censored
 login
 transport input all
line vty 16 1370
 password 7 censored
 login
 transport input all
!
scheduler allocate 20000 1000
end

我遇到的最后一个问题是，3G接口在几分钟不活动之后就会中断。我尝试过每分钟使用kron来平本地HWIC-3G-HSPA接口(蜂窝0/1/0)，但这没有成功。手动将分配给ce0/1/0的IP发送到CE0/1/0确实提高了接口。

有什么想法吗？

谢谢

Answer 1

您可以设置一个假GRE隧道，以便发送数据包以维护接口。

router(config)# int tun0
router(config-if)# ip unnunbered <lan interface>
router(config-if)# tunnel mode gre
router(config-if)# tunnel source <lan interface>
router(config-if)# tunnel dest <default 3G gateway>

隧道也可以是任何IP为您有一条路线通过3G。隧道将保持不动(因为保持活着的消息不会被回复)，但是发送的保持生命将迫使3G接口保持不动。