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Cisco 881 4G Failover From WAN to 4G Problem

Yair
Level 1
Level 1

Hello community need some help

I have 881 4g with an active sim card

now I don't find any good tutorial on how to configure IP sla failover 

let's say interface WAN is down after 2 seconds failover to cellular

after WAN in online again failover back to WAN

any good working config sample?

here is my config 

this is testing config firewall will be configured later.

I removed sensitive information

version 15.9
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
no service password-recovery
!
hostname Cisco4G
!
boot-start-marker
boot-end-marker
!
!
logging console critical
enable secret SOME PASSWORD
!
no aaa new-model
clock timezone GMT 3 0
!
!
!
!
!
!
!
no ip source-route
!
!
!
ip dhcp excluded-address 10.3.0.1 10.3.0.99
!
ip dhcp pool LAN_DHCP
import all
network 10.3.0.0 255.255.255.0
default-router 10.3.0.1
dns-server 10.3.0.1
lease 0 0 5
update arp
!
!
!
no ip bootp server
ip domain name cisco.local
ip name-server 9.9.9.9
ip cef
ipv6 unicast-routing
no ipv6 cef
!
!
!
!
!
!
chat-script lte "" "AT!CALL" TIMEOUT 20 "OK"
password encryption aes
!
!
license boot module c800 level advsecurity
!
!
username USERNAME privilege 15 secret PASSWORD
!
redundancy
!
!
!
!
!
controller Cellular 0
lte sim data-profile 1 attach-profile 1 slot 0
!
!
!
!
interface Cellular0
ip address negotiated
ip nat outside
ip virtual-reassembly in
encapsulation slip
ip tcp adjust-mss 1390
dialer in-band
dialer idle-timeout 0
dialer string lte
dialer-group 1
async mode interactive
!
interface Cellular1
no ip address
encapsulation slip
shutdown
!
interface FastEthernet0
no ip address
!
interface FastEthernet1
no ip address
!
interface FastEthernet2
no ip address
!
interface FastEthernet3
no ip address
!
interface FastEthernet4
ip address dhcp
ip nat outside
ip virtual-reassembly in
no shutdown
duplex auto
speed auto
!
interface Vlan1
ip address 10.3.0.1 255.255.255.0
ip nat inside
ip virtual-reassembly in
!
ip forward-protocol nd
no ip http server
no ip http secure-server
!
ip dns server
ip nat inside source list LAN_TO_WAN_NAT interface f4 overload
ip route 0.0.0.0 0.0.0.0 f4 dhcp
ip ssh version 2
ip ssh server algorithm encryption aes128-ctr
ip ssh client algorithm encryption aes128-ctr
!
ip access-list extended LAN_TO_WAN_NAT
permit ip 10.3.0.0 0.0.0.255 any
!
dialer-list 1 protocol ip permit
!
!
!
mgcp behavior rsip-range tgcp-only
mgcp behavior comedia-role none
mgcp behavior comedia-check-media-src disable
mgcp behavior comedia-sdp-force disable
!
mgcp profile default
!
!
!
!
!
!
line con 0
login local
no modem enable
line aux 0
line 2
no activation-character
no exec
transport preferred none
stopbits 1
line 3
exec-timeout 0 0
script dialer lte
login
modem InOut
no exec
transport input all
rxspeed 100000000
txspeed 50000000
line 8
no exec
rxspeed 100000000
txspeed 50000000
line vty 0 4
login local
transport input ssh
!
scheduler allocate 20000 1000
ntp master
ntp update-calendar
ntp server time.google.com
!
!
!
!
!
!
end

 

 

 

1 Reply 1

Yair
Level 1
Level 1

anyone?

 

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