Cellular interface going up and down with negotiated IP. IR1101

[GIGA PARSEC]

Welcome all.

After configuring cellular interface, it negotiates correct IP, but seems to not work correct. There are messages about interface going up and down all the time. Here is the result of sh cellular 0/1/0 all command:

https://pastebin.com/E8HELkrw

Here is debug cellular messages all command, many lines but it is containing debug messages before both changes of interface up/down:

https://pastebin.com/3JWeiVum 

I would appreciate all help.

[MHM Cisco World]

Add  NAT to your config and check 

SP not accepting any IP other than public IP of Wan interfere 

MHM

[GIGA PARSEC]

IP nat inside?

[MHM Cisco World]

Sorry what you meaning? Can yoh elaborate.

If you meaning what ypu need to config NAT 

You need 

Ip nat inside 

Ip nat outside <<- under the WAN interface 

Ip nat inside source list 10 interface  <wan>

MHM

[GIGA PARSEC]

I did changes in configuration like that:

Settings of interface:
interface Cellular0/1/0
ip address negotiated
ip nat outside
ip access-group OUTSIDE_ACL_block in
ip access-group Plus_ip_ACL_only out
ip tcp adjust-mss 1460
dialer in-band
dialer-group 1
ipv6 enable
pulse-time 1

Access list:
ip access-list extended Plus_ip_ACL_only
10 permit ip host xxx.xxx.xxx.xxx any

Where xxx is IP of the SIM card. Still the problem of interface restarting persists. This cell interface is the only connection to internet, so I assume this is the WAN you are talking about.

[GIGA PARSEC]

Other commands which show good signs when the interface is up: profile active, ip int and running config. I tried attaching source list 10 but I don't know what to fill it with.
https://pastebin.com/LNNC0yVK

[MHM Cisco World]

Sorry I try open your link but I failed 

Can you share log as text here 

MHM

[GIGA PARSEC]

Here you are:

RouterCiscoWitko#show ip int cell 0/1/0
Cellular0/1/0 is up, line protocol is up
  Internet address is xxxxxxxx/32
  Broadcast address is 255.255.255.255
  Address determined by IPCP
  MTU is 1500 bytes
  Helper address is not set
  Directed broadcast forwarding is disabled
  Outgoing Common access list is not set
  Outgoing access list is ALLOW_icmp
  Inbound Common access list is not set
  Inbound  access list is OUTSIDE_ACL_block
  Proxy ARP is enabled
  Local Proxy ARP is disabled
  Security level is default
  Split horizon is enabled
  ICMP redirects are always sent
  ICMP unreachables are always sent
  ICMP mask replies are never sent
  IP fast switching is disabled
  IP Flow switching is disabled
  IP CEF switching is disabled
  IP Distributed switching is disabled
  IP Null turbo vector
  IP Null turbo vector
  Associated unicast routing topologies:
        Topology "base", operation state is UP
  IP multicast fast switching is enabled
  IP multicast distributed fast switching is disabled
  IP route-cache flags are Fast, CEF
  Router Discovery is disabled
  IP output packet accounting is disabled
  IP access violation accounting is disabled
  TCP/IP header compression is disabled
  RTP/IP header compression is disabled
  Probe proxy name replies are disabled
  Policy routing is disabled
  Network address translation is enabled, interface in domain outside
  BGP Policy Mapping is disabled
  Input features: Virtual Fragment Reassembly, Access List, NAT Outside, MCI Check, TCP Adjust MSS
  Output features: Post-routing NAT Outside, Access List, TCP Adjust MSS, Dialer idle reset
  IPv4 WCCP Redirect outbound is disabled
  IPv4 WCCP Redirect inbound is disabled
  IPv4 WCCP Redirect exclude is disabled
  IP Clear Dont Fragment is disabled
RouterCiscoWitko#show running-config int cell 0/1/0
Building configuration...

Current configuration : 223 bytes
!
interface Cellular0/1/0
 ip address negotiated
 ip nat outside
 ip access-group OUTSIDE_ACL_block in
 ip tcp adjust-mss 1460
 dialer in-band
 dialer-group 1
 ipv6 enable
 pulse-time 1
end

RouterCiscoWitko#show cell 0/1/0 profile

Profile 1 = ACTIVE* **
--------
PDP Type = IPv4
PDP address = xxxxxxxx
IPv4 PDP Connection is successful
Access Point Name (APN) = m2m.plusgsm.pl
Authentication = None
        Primary DNS address = 212.2.127.254
        Secondary DNS address = 212.2.96.53

Profile 2 = INACTIVE
--------
PDP Type = IPv4v6
Access Point Name (APN) = ims
Authentication = None

Profile 3 = INACTIVE
--------
PDP Type = IPv4v6
Access Point Name (APN) = sos
Authentication = None

Profile 4 = INACTIVE
--------
PDP Type = IPv4v6
Access Point Name (APN) = xcap
Authentication = None

  * - Default profile
 ** - LTE attach profile


Configured default profile for active SIM 0 is profile 1.

RouterCiscoWitko#
*Sep 25 12:54:40.386: %LINK-3-UPDOWN: Interface Cellular0/1/0, changed state to down
*Sep 25 12:54:41.388: %LINEPROTO-5-UPDOWN: Line protocol on Interface Cellular0/1/0, changed state to down