4G problem on a cisco 2900 router.
I have configured a Cisco 2900 router to support the 4G and I configured a tunnel but the 4G WIC is turning down and on repeatedly!
interface Cellular0/2/0
ip address $$$$$$$$$$$$$
no ip redirects
no ip unreachables
no ip proxy-arp
ip flow ingress
encapsulation slip
dialer in-band
dialer idle-timeout 0
dialer string lte
dialer string gsm
dialer string hspa-R7
dialer-group 1
async mode interactive
!
interface Tunnel3
description VODAFONE 4G
ip address $$$$$$$$$$
tunnel source $$$$$$$$
tunnel destination $$$$$$$$
keepalive$$$
!
I don't know what is the problem, the router was working fine till yesterday!
there's nothing wrong with the operator just in case you're wondering, there are some other routers that are working fine.