I want to be using the 3G as a back up incase the DSL or Cable goes down. Does this look like it would work as the back up portion of the config or am I completely off my rocker.
Thanks in advance.
interface Cellular0/3/0
bandwidth receive 1400000
ip address negotiated
ip nat outside
ip virtual-reassembly
encapsulation ppp
no ip mroute-cache
dialer in-band
dialer idle-timeout 0
dialer string gsm
dialer-group 1
async mode interactive
interface Dialer2
ip address negotiated
ip mtu 1492
ip nat outside
ip virtual-reassembly
encapsulation ppp
load-interval 30
dialer pool 2
dialer-group 2
ppp authentication chap callin
ppp chap hostname (username@what.com)
ppp chap password Password!
interface Tunnel11
ip address x.x.x.x x.x.x.x
no ip redirects
ip mtu 1400
ip nhrp authentication abc123
ip nhrp map multicast x.x.x.x
ip nhrp map multicast x.x.x.x
ip nhrp map x.x.x.x x.x.x.x
ip nhrp map x.x.x.x x.x.x.x
ip nhrp network-id 1
ip nhrp nhs x.x.x.x
ip nhrp nhs x.x.x.x
ip tcp adjust-mss 1360
no ip split-horizon eigrp 100
tunnel source dialer2
tunnel mode gre multipoint
tunnel key 1234
tunnel protection ipsec profile NMMSTORES
ip route 0.0.0.0 0.0.0.0 FastEthernet4
ip route 0.0.0.0 0.0.0.0 Cellular0/3/0 254