1921 4G LTE - Cellular interfaces reset and goes down

dtristang · ‎04-25-2013

The tunnel connection is establishing correctly but when i change the priority in he hsrp configuration of my gig 0.1 interface to be the active on this router the cellular 0/0/0 interface goes down, by the way this is going to be my redundancy.

This is the configuration that i got

chat-script lte "" "AT!CALL1" TIMEOUT 60 "OK"

crypto isakmp policy 2

authentication pre-share

crypto isakmp key cisco123 address 67.21.161.218

!

crypto ipsec transform-set ASA-IPSEC esp-des esp-sha-hmac

!

crypto map bars01 1 ipsec-isakmp

description Tunnel toCOrp

set peer 67.21.161.218

set transform-set ASA-IPSEC

set pfs group1

match address 100

interface GigabitEthernet0/0.1

description Legacy vlan

encapsulation dot1Q 1 native

ip address 10.141.116.252 255.255.255.0

standby 0 ip 10.141.116.250

standby 0 priority 105

standby 0 preempt

ip tcp adjust-mss 1395

interface Cellular0/0/0

ip address 166.258.14.27 255.255.255.0

ip virtual-reassembly in

encapsulation slip

dialer in-band

dialer idle-timeout 2147483

dialer string lte

dialer-group 1

async mode interactive

crypto map bars01

ip nat inside source route-map nonat interface Cellular0/0/0 overload

ip route 0.0.0.0 0.0.0.0 Cellular0/0/0

ip route 67.21.161.218 255.255.255.255 Cellular0/0/0

access-list 100 permit ip 10.141.116.0 0.0.0.255 192.168.100.0 0.0.0.255

access-list 100 permit ip 10.141.116.0 0.0.0.255 140.140.251.0 0.0.0.255

access-list 100 deny ip any any

access-list 110 deny ip 10.141.116.0 0.0.0.255 140.140.251.0 0.0.0.255

access-list 110 deny ip 10.141.116.0 0.0.0.255 192.168.100.0 0.0.0.255

access-list 110 permit ip 10.141.116.0 0.0.0.255 any

dialer-list 1 protocol ip permit

!

route-map nonat permit 10

match ip address 110

I will appreciate your help

Thanks a lot

rpadwal · ‎04-29-2013

Hi David,

As per the mentioned issue you might be seeing the below logs on the logging console.

Apr  2 14:49:49.209:  LINEPROTO-5-UPDOWN  Line protocol on Interface Cellular0/1/0, changed state to down
Apr  2 14:49:53.237:  LINK-3-UPDOWN  Interface Cellular0/1/0, changed state to down
Apr  2 14:50:15.121:  LINK-3-UPDOWN  Interface Cellular0/1/0, changed state to up
Apr  2 14:50:16.121:  LINEPROTO-5-UPDOWN  Line protocol on Interface Cellular0/1/0, changed state to up

Please try the below workaround.

step 1: create an acl to permit your public ip to any

access-list 147 permit ip host any

eg:

access-list 147 permit ip host 166.258.14.27 any

apply the acl out bound on the interface

step 2: Apply the acl out bound on the interface

interface Cellular0/0/0

ip access-group 147 out

The ISP expects your public ip as the source and hence it resets the interface.

hope it helps !!!!!!!!! in resolving your issue.

Thanks and regards,

Rohan

Thanks and Regards, ROHAN :)