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 * [[Cisco/Gsm3G/Debug]] - Debug commands

Cisco 3G GSM + GRE Config

  • Cisco/Gsm3G/EEMreset - Automated 3G modem reset on cisco router.

  • Cisco/Gsm3G/Debug - Debug commands

  • Cisco/Gsm3G/Old2012 Older config with dialer, dialer not needed

  • Need to add IPSec see http://www.cisco.com/en/US/docs/ios-xml/ios/sec_conn_ike2vpn/configuration/15-2mt/sec-flex-spoke.html

  • Cisco 3G cellular modem reset / power-cycle
    • If command not available it could be that modem firmware is to old.
    •  #test cellular 0/3/0 modem-power-cycle 

  • Also resets the modem.
    •  #cellular 0/3/0 gsm prl-region 0 

  • Cisco 3G cellular - Firmware - NOT included with IOS on HWIC module download seperate extract .tar to flash
    • 201303 - latest firmware for Europe 8790_k2_0_7_52.tar
    •         archive tar /xtract source-url flash: 
              microcode reload cellular pa-bay slot gsm modem-provision
              !Cellular interface will shut and no shut automatically.  It can take long. 
  • 3G Cisco router config
    • Details:
      • 2 - WWW GW IP's with gre tunnels
      • Example: Use subnet 10.202.191.x and 10.202.192.x for tunnel termination. .1 IS HQ GW
      !
      chat-script gsm "" "ATD*99*1#" TIMEOUT 60 CONNECT
      !
      !
      interface Cellular0/3/0
       ip address negotiated
       no ip virtual-reassembly in
       encapsulation ppp
       dialer in-band
       dialer idle-timeout 0
       dialer string gsm
       dialer-group 98
       async mode interactive
       ppp authentication chap callin
       ppp chap hostname dummy
       ppp chap password 0 dummy 
       ppp ipcp dns request
       ppp ipcp address accept
       ppp timeout 600
      !
      ! ##Dual Antenna HWIC##
      interface Cellular0/3/1
       no ip address
       encapsulation ppp
      !
      !
      interface Tunnel191
       description 3G-GRE
       bandwidth 100
       ip address 10.202.191.143 255.255.255.0
       ip nhrp group 191
       ip nhrp map multicast 10.202.191.1
       ip nhrp network-id 191
       ip nhrp nhs 10.202.191.1
       ip nhrp registration no-unique
       ip ospf network broadcast
       ip ospf flood-reduction
       ip ospf priority 0
       tunnel path-mtu-discovery
       tunnel path-mtu-discovery age-timer 30
       tunnel path-mtu-discovery min-mtu 1300
       tunnel source Cellular0/3/0
       tunnel destination {{IP-EXT-NAT-WWW1}}
      !
      interface Tunnel192
       description 3G-GRE-IS
       bandwidth 100
       ip address 10.202.192.143 255.255.255.0
       ip nhrp group 192
       ip nhrp map multicast 10.202.192.1
       ip nhrp network-id 192
       ip nhrp nhs 10.202.192.1
       ip nhrp registration no-unique
       ip ospf network broadcast
       ip ospf flood-reduction
       ip ospf priority 0
       tunnel path-mtu-discovery
       tunnel path-mtu-discovery age-timer 30
       tunnel path-mtu-discovery min-mtu 1300
       tunnel source Cellular0/3/0
       tunnel destination {{IP-EXT-NAT-WWW2}}
      !
      ip route {{IP-EXT-NAT-WWW1}} 255.255.255.255 Cellular0/3/0
      ip route {{IP-EXT-NAT-WWW2}} 255.255.255.255 Cellular0/3/0
      !
      dialer-list 98 protocol ip permit
      !
      line 0/3/0
       script dialer gsm
       no exec
       rxspeed 7200000
       txspeed 2000000
      !
      router ospf 1
       network 10.202.191.0 0.0.0.255 area 0
       network 10.202.192.0 0.0.0.255 area 0
      !
  • Core routers, can be one or two routers, external IP's nated to 10.10.240.191 & 192

    • !
      interface Loopback191
       description TunnelSRC-nat-{{IP-EXT-NAT-WWW1}}
       ip address 10.10.240.191 255.255.255.255
      !
      interface Loopback192
       description TunnelSRC-nat-{{IP-EXT-NAT-WWW2}}
       ip address 10.10.240.192 255.255.255.255
      !
      interface Tunnel191
       description 3G-ExtIP-{{IP-EXT-NAT-WWW1}}
       ip address 10.202.191.1 255.255.255.0
       no ip redirects
       ip nhrp group 191
       ip nhrp map multicast dynamic
       ip nhrp network-id 191
       ip ospf network broadcast
       ip ospf flood-reduction
       ip ospf priority 191
       tunnel source Loopback191
       tunnel mode gre multipoint
      !
      interface Tunnel192
       description 3G-ExtIP-{{IP-EXT-NAT-WWW2}}
       ip address 10.202.192.1 255.255.255.0
       no ip redirects
       ip nhrp group 192
       ip nhrp map multicast dynamic
       ip nhrp network-id 192
       ip ospf network broadcast
       ip ospf flood-reduction
       ip ospf priority 192
       tunnel source Loopback192
       tunnel mode gre multipoint
      !
      router ospf 1
       network 10.202.0.0 0.0.255.255 area 0
      !
  • 2013 - put cellular network interface in own vrf.
    • !
      vrf definition vrf3gAPN
        rd 10.202.194.1:134
        !
        address-family ipv4
        exit-address-family
      !
      interface Tunnel194
        tunnel vrf vrf3gAPN
      !
      interface Cellular0/3/0
        vrf forwarding vrf3gAPN
      !
      no ip route           10.10.240.194 255.255.255.255 Cellular0/3/0 permanent name 3G-Central-APN-LB
      ip route vrf vrf3gAPN 10.10.240.194 255.255.255.255 Cellular0/3/0 permanent name 3G-Central-APN-LB
      !
  • IP SLA ping to force traffic on static route to bring-up Cellular to get IP to bring up Tunnel.

ip sla 191
!! Older routers #rtr  or #ip sla monitor !! 
  icmp-echo 10.10.240.191
  tag 3G-tun191
  frequency 600
ip sla schedule 193 life forever start-time now

Comments

  • Feel free to leave comments or corrections.
  • 2013-01-21 Pieter Smit - chicken egg problem where tunnel down because no source IP on cellular, and cellular down due to no interesting traffic.
    • Two solutions possible, [1.] Fix ip on cellular (works for private apn with fixed ip's) or [2.] ip sla to ping static route to force cellular0/3/0 up.
  • 2012-10-20 Pieter Smit - Create page.

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CategoryCisco

Cisco/Gsm3G (last edited 2017-11-10 22:37:27 by PieterSmit)