Hello,
I am looking for some help solving a problem with a Cisco 1921 and the Verizon 4G EHWIC card. I have configured the router and it is working and was looking to add the 4G as a backup to the primary connection G0/0. The cell interface is at Cellular0/0/0. If I add the following command ip address negotiated to the cellular interface then the G0/0 basically stops working and I loose all internet connectivity until that startment is removed. I don't understand why this is occurring. Any help would be appreciated. The only item I can think of is adding the additional something with NAT not configured correctly for that interface. Does not seem that the cellular interface "dials" when the G0/0 interface goes down. I have researched and have tried many different changes but nothing is fixing this issue. The firmware is up to date on the modem and the IOS is 15.5.3. Thanks in advance for any advice. Below is the snippet of the config with sections removed to keep size down that does not pertain I believe. Also included below is the cellular interface info.
version 15.5
no service pad
service tcp-keepalives-in
service tcp-keepalives-out
service timestamps debug datetime msec localtime show-timezone
service timestamps log datetime msec localtime show-timezone
service password-encryption
service sequence-numbers
!
hostname Router
!
boot-start-marker
boot system flash:c1900-universalk9-mz.SPA.155-3.M.bin
boot-end-marker
!
!
security authentication failure rate 3 log
security passwords min-length 6
logging buffered 51200
logging console critical
!
aaa new-model
!
!
aaa authentication login local_access local
aaa authentication login local_authen local
aaa authorization exec local_author local
!
!
!
!
!
aaa session-id common
ethernet lmi ce
clock timezone EST -5 0
clock summer-time EDT recurring
!
!
!
!
!
!
no ip source-route
!
!
!
ip dhcp excluded-address 10.7.20.1 10.7.20.120
!
ip dhcp pool LAN
import all
network 10.7.20.0 255.255.255.0
dns-server 71.243.0.12 71.250.0.12
default-router 10.7.20.1
!
!
!
no ip bootp server
ip name-server 71.243.0.12
ip name-server 71.250.0.12
ip name-server 8.8.8.8
ip name-server 8.8.4.4
ip ips config location flash:ips retries 1
ip ips notify SDEE
ip ips name IOS-IPS
!
ip ips signature-category
category all
retired true
enabled false
category ios_ips basic
retired false
enabled true
!
ip cef
no ipv6 cef
!
!
flow record nbar-appmon
match ipv4 source address
match ipv4 destination address
match application name
collect interface output
collect counter bytes
collect counter packets
collect timestamp absolute first
collect timestamp absolute last
!
!
flow monitor application-mon
cache timeout active 60
record nbar-appmon
!
parameter-map type inspect global
max-incomplete low 18000
max-incomplete high 20000
nbar-classify
multilink bundle-name authenticated
!
chat-script lte "" "AT3CALL" TIMEOUT 60 "OK"
password encryption aes
cts logging verbose
!
crypto pki trustpoint TP-self-signed-2901148831
enrollment selfsigned
subject-name cn=IOS-Self-Signed-Certificate-2901148831
revocation-check none
rsakeypair TP-self-signed-2901148831
!
!
license udi pid CISCO1921/K9 sn XXXXXXXXX
license boot module c1900 technology-package datak9
!
!
!
object-group network local_lan_subnets
10.7.20.0 255.255.255.0
!
!
username XXXXX privilege 15 secret 5
username XXXXX privilege 12 secret 5
!
redundancy
!
!
!
!
!
controller Cellular 0/0
lte modem link-recovery rssi onset-threshold -110
lte modem link-recovery monitor-timer 20
lte modem link-recovery wait-timer 10
lte modem link-recovery debounce-count 6
no cdp run
!
ip tcp synwait-time 10
!
!
policy-map type inspect LAN-WAN-POLICY
policy-map type inspect WAN-LAN-POLICY
!
zone security LAN
zone security WAN
zone security VPN
zone security DMZ
zone-pair security LAN-WAN source LAN destination WAN
service-policy type inspect LAN-WAN-POLICY
zone-pair security WAN-LAN source WAN destination LAN
service-policy type inspect WAN-LAN-POLICY
!
!
!
!
!
interface Embedded-Service-Engine0/0
no ip address
no ip redirects
no ip unreachables
no ip proxy-arp
ip flow ingress
ip virtual-reassembly in
shutdown
!
interface GigabitEthernet0/0
description PrimaryWANDesc_FiOS
ip address dhcp
no ip redirects
no ip unreachables
no ip proxy-arp
ip flow ingress
ip nat outside
ip ips IOS-IPS in
ip virtual-reassembly in
zone-member security WAN
duplex auto
speed auto
no mop enabled
!
interface GigabitEthernet0/1
description Home LAN
ip address 10.7.20.1 255.255.255.0
no ip redirects
no ip proxy-arp
ip nbar protocol-discovery
ip flow monitor application-mon input
ip flow ingress
ip flow egress
ip nat inside
ip virtual-reassembly in
zone-member security LAN
load-interval 30
duplex auto
speed auto
no mop enabled
!
interface Cellular0/0/0
description BackupWANDesc_LTE
no ip address
ip nat outside
ip virtual-reassembly in
encapsulation slip
dialer in-band
dialer string lte
async mode interactive
!
ip forward-protocol nd
!
ip http server
ip http upload enable path flash:
ip http upload overwrite
ip http authentication local
ip http secure-server
ip http timeout-policy idle 60 life 86400 requests 10000
!
no ip ftp passive
ip nat inside source list nat-list interface GigabitEthernet0/0 overload
ip route 0.0.0.0 0.0.0.0 GigabitEthernet0/0 track 1
ip route 0.0.0.0 0.0.0.0 Cellular0/0/0 253
ip route 8.8.8.8 255.255.255.255 GigabitEthernet0/0
!
logging trap debugging
dialer-list 1 protocol ip permit
!
!
!
!
!
control-plane
!
!
banner incoming ^CCisco 1921 K9/Security^C
banner login ^C
*** UNAUTHORIZED ACCESS TO THIS DEVICE IS PROHIBITED ***
For Authorized Offical Use Only
You must have explicit permission to access
or configure this device. All activities performed
on this device are logged, and violations of
this policy may be reported to law
enforcement authorities.
There is no right to privacy on this device. ^C
!
line con 0
login authentication local_access
line aux 0
line 2
no activation-character
no exec
transport preferred none
transport output pad telnet rlogin lapb-ta mop udptn v120 ssh
stopbits 1
line 0/0/0
script dialer lte
modem InOut
no exec
line vty 0 4
access-class 23 in
privilege level 15
login authentication local_access
transport input telnet ssh
!
scheduler allocate 20000 1000
ntp update-calendar
ntp server 131.107.13.100 prefer source GigabitEthernet0/0
!
end
Cellular Info Below:
Cellular 0/0/0 Interface Info
show cellular 0/0/0 network
Current System Time = Mon Aug 24 2:57:48 2015
Current Service Status = Normal
Current Service = Packet switched
Current Roaming Status = Home
Network Selection Mode = Automatic
Network = Verizon Wireless
Mobile Country Code (MCC) = 311
Mobile Network Code (MNC) = 480
Packet switch domain(PS) state = Attached
Registration state(EMM) = Registered
EMM Sub State = Normal Service
Tracking Area Code (TAC) = 14595
Cell ID = 14598913
show cellular 0/0/0 radio
Radio power mode = ON
LTE Rx Channel Number = 5230
LTE Tx Channel Number = 23230
LTE Band = 13
LTE Bandwidth = 10 MHz
Current RSSI = -83 dBm
Current RSRP = -116 dBm
Current RSRQ = -17 dB
Current SNR = -2.0 dB
Radio Access Technology(RAT) Preference = AUTO
Radio Access Technology(RAT) Selected = LTE
show cellular 0/0/0 profile
Profile password Encryption level: 7
Profile 1 = INACTIVE **
--------
PDP Type = IPv4
Access Point Name (APN) = vzwinternet
Authentication = None
Profile 2 = INACTIVE
--------
PDP Type = IPv4v6
Access Point Name (APN) = vzwadmin
Authentication = None
Profile 3 = INACTIVE*
--------
PDP Type = IPv4
Access Point Name (APN) = vzwinternet
Authentication = None
Profile 4 = INACTIVE
--------
PDP Type = IPv4v6
Access Point Name (APN) = vzwapp
Authentication = None
Profile 5 = INACTIVE
--------
PDP Type = IPv4
Access Point Name (APN) =
Authentication = None
* - Default profile
** - LTE attach profile
show cellular 0/0/0 security
Card Holder Verification (CHV1) = Disabled
SIM Status = OK
SIM User Operation Required = None
Number of CHV1 Retries remaining = 3
show cellular 0/0/0 all
Hardware Information
====================
Modem Firmware Version = SWI9600M_03.05.10.06ap
Modem Firmware built = 2012/11/12 15:07:45
Hardware Version = 10
Device Model ID: MC7750
Package Identifier ID: MC7750_03.05.10.06_00_vzw_033.011_000
International Mobile Subscriber Identity (IMSI) = 311480039061020
International Mobile Equipment Identity (IMEI) = 990000820070961
Integrated Circuit Card ID (ICCID) = 89148000000384557279
Mobile Subscriber Integrated Services
Digital Network-Number (MSISDN) = 7745030447
Current Modem Temperature = 34 deg C
PRI SKU ID = 9900853, PRI version = 00.05, Carrier = 5
Profile Information
====================
Profile password Encryption level: 7
Profile 1 = INACTIVE **
--------
PDP Type = IPv6
Access Point Name (APN) = vzwims
Authentication = None
Profile 2 = INACTIVE
--------
PDP Type = IPv4v6
Access Point Name (APN) = vzwadmin
Authentication = None
Profile 3 = INACTIVE*
--------
PDP Type = IPv4
Access Point Name (APN) = vzwinternet
Authentication = None
Profile 4 = INACTIVE
--------
PDP Type = IPv4v6
Access Point Name (APN) = vzwapp
Authentication = None
Profile 5 = INACTIVE
--------
PDP Type = IPv4
Access Point Name (APN) =
Authentication = None
* - Default profile
** - LTE attach profile
Data Connection Information
===========================
Profile 1, Packet Session Status = INACTIVE
Profile 2, Packet Session Status = INACTIVE
Profile 3, Packet Session Status = INACTIVE
Profile 4, Packet Session Status = INACTIVE
Profile 5, Packet Session Status = INACTIVE
Profile 6, Packet Session Status = INACTIVE
Network Information
===================
Current System Time = Mon Aug 24 3:1:8 2015
Current Service Status = Normal
Current Service = Packet switched
Current Roaming Status = Home
Network Selection Mode = Automatic
Network = Verizon Wireless
Mobile Country Code (MCC) = 311
Mobile Network Code (MNC) = 480
Packet switch domain(PS) state = Attached
Registration state(EMM) = Registered
EMM Sub State = Normal Service
Tracking Area Code (TAC) = 14595
Cell ID = 14598913
Radio Information
=================
Radio power mode = ON
LTE Rx Channel Number = 5230
LTE Tx Channel Number = 23230
LTE Band = 13
LTE Bandwidth = 10 MHz
Current RSSI = -83 dBm
Current RSRP = -117 dBm
Current RSRQ = -17 dB
Current SNR = -3.3 dB
Radio Access Technology(RAT) Preference = AUTO
Radio Access Technology(RAT) Selected = LTE
Modem Security Information
==========================
Card Holder Verification (CHV1) = Disabled
SIM Status = OK
SIM User Operation Required = None
Number of CHV1 Retries remaining = 3
GPS Information
==========================
GPS Info
-------------
GPS Feature: enabled
GPS Port Selected: Dedicated GPS port
GPS State: GPS disabled
SMS Information
===============
Incoming Message Information
----------------------------
SMS stored in modem = 23
SMS archived since booting up = 0
Total SMS deleted since booting up = 0
Storage records allocated = 25
Storage records used = 23
Number of callbacks triggered by SMS = 0
Number of successful archive since booting up = 0
Number of failed archive since booting up = 0
Outgoing Message Information
----------------------------
Total SMS sent successfully = 0
Total SMS send failure = 0
Number of outgoing SMS pending = 0
Number of successful archive since booting up = 0
Number of failed archive since booting up = 0
Last Outgoing SMS Status = SUCCESS
Copy-to-SIM Status = 0x0
Send-to-Network Status = 0x0
Report-Outgoing-Message-Number:
Reference Number = 0
Result Code = 0x0
Diag Code = 0x0 0x0 0x0 0x0 0x0
SMS Archive URL =
Error Information
=================
This command is not supported on this platform.
Modem Crashdump Information
===========================
Modem crashdump logging: off
