04-08-2015 10:25 PM - edited 03-07-2019 11:27 PM
Hi,
I'm trying to get a replacement router (1941) with a HWIC-3G-HSPA card setup on our network to fill in for our primary connection until the outage is resolved.
I've configured the router and the 3G connects. From the router, I can ping remote hosts, do DNS lookups, traceroutes etc.
From any other device (neighbouring switch, end users connected to the switch etc) I can only ping remote hosts. All other traffic gets no where. It appears I can traceroute, albeit incredibly slowly.
The setup is pretty straight forward (config below), but essentially the 1941 -> 4507R switchport on VLAN 200 <- WLC & Hard wired clients on varying VLANS (214 for Wifi, 212 for wired etc). The 4507 does layer 3 routing etc. There are no other routers/switches. We have a WLC connected to the switch and an ASA that usually does the PPPoE termination for our primary internet connection (this router is replacing the ASA temporarily). The default route on the 4507 has been changed to point to the new router (10.2.0.251) rather than the ASA (10.2.0.250).
I can see NAT translations happening, ie:
Pro Inside global Inside local Outside local Outside global udp 10.98.67.96:51737 10.2.14.11:51737 8.8.8.8:53 8.8.8.8:53 udp 10.98.67.96:52021 10.2.14.11:52021 8.8.4.4:53 8.8.4.4:53
Route table:
Gateway of last resort is 0.0.0.0 to network 0.0.0.0 S* 0.0.0.0/0 is directly connected, Dialer1 10.0.0.0/8 is variably subnetted, 4 subnets, 3 masks S 10.2.0.0/16 [1/0] via 10.2.0.1 C 10.2.0.0/24 is directly connected, GigabitEthernet0/0 L 10.2.0.251/32 is directly connected, GigabitEthernet0/0 C 10.98.67.96/32 is directly connected, Dialer1
The 1941 config:
mel2-l1-router-01#show run Building configuration... Current configuration : 4539 bytes ! ! Last configuration change at 05:04:43 GMT Thu Apr 9 2015 by shimms ! NVRAM config last updated at 02:45:58 GMT Thu Apr 9 2015 ! NVRAM config last updated at 02:45:58 GMT Thu Apr 9 2015 version 15.3 service timestamps debug datetime msec service timestamps log datetime msec service password-encryption ! hostname mel2-l1-router-01 ! boot-start-marker boot system flash0:c1900-universalk9-mz.SPA.153-2.T.bin boot-end-marker ! ! enable secret 4 [removed] enable password 7 [removed] ! aaa new-model ! ! ! ! ! ! ! aaa session-id common clock timezone GMT 0 11 ! ip cef ! ! ! ! ! ! ip domain name teamsquare.internal ip name-server 8.8.8.8 ip name-server 8.8.4.4 no ipv6 cef ! multilink bundle-name authenticated ! chat-script gsm "" "ATDT*99*1#" TIMEOUT 30 ! crypto pki trustpoint TP-self-signed-869303978 [removed] ! ! crypto pki certificate chain TP-self-signed-869303978 [removed] quit license udi pid CISCO1941/K9 sn [removed] ! redundancy ! ! ! ! ! controller Cellular 0/0 ! ip ssh rsa keypair-name sshkeys ip ssh version 2 ! ! ! ! ! interface Embedded-Service-Engine0/0 no ip address shutdown ! interface GigabitEthernet0/0 ip address 10.2.0.251 255.255.255.0 ip nat inside ip virtual-reassembly in duplex auto speed auto ! interface GigabitEthernet0/1 no ip address duplex auto speed auto ! interface Cellular0/0/0 description Telstra 3G Wireless ip address negotiated ip virtual-reassembly in encapsulation ppp dialer in-band dialer pool-member 1 dialer-group 1 async mode interactive ppp chap refuse ! interface Cellular0/0/1 no ip address encapsulation ppp ! interface Dialer0 no ip address ! interface Dialer1 description Dialer interface for int cell0/0/0 ip address negotiated ip virtual-reassembly in encapsulation ppp dialer pool 1 dialer idle-timeout 0 dialer string gsm dialer persistent dialer-group 1 no cdp enable ! no ip forward-protocol nd ! no ip http server no ip http secure-server ! no ip nat service sip udp port 5060 ip nat inside source list 1 interface Dialer1 overload ip route 0.0.0.0 0.0.0.0 Dialer1 ip route 10.2.14.0 255.255.254.0 10.2.0.1 ! ! ! access-list 1 permit 10.2.0.0 0.0.255.255 ! ! ! control-plane ! ! ! line con 0 exec-timeout 0 0 privilege level 0 line aux 0 line 2 no activation-character no exec transport preferred none transport input all transport output pad telnet rlogin lapb-ta mop udptn v120 ssh stopbits 1 line 0/0/0 exec-timeout 0 0 script dialer gsm modem InOut no exec transport input all transport output all rxspeed 7200000 txspeed 5760000 line 0/0/1 no exec rxspeed 7200000 txspeed 5760000 line vty 0 4 exec-timeout 2 30 privilege level 0 length 0 transport preferred none transport input ssh line vty 5 15 password 7 [removed] transport preferred none transport input ssh ! scheduler allocate 20000 1000 ntp server 130.194.1.96 ! end
04-08-2015 11:29 PM
Re-reading the config I pasted above (rather than looking at it in the CLI) seems to have done the truck - obvious mistake, was missing `ip nat outside` on the dialer interface.
Works now.
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