Hello all,
This is the first time I am actually trying to configure and debug a cisco router, so bear with me. I have a very small business so I have the simplest network there is, nothing fancy here. I have been trying to get a Cisco 819 and a LAP1242 in Autonomous mode to work as my new router and acess point (internet acess is using the routers internal SIM 3G chip), but I've been having several issues related to IP addresses, and I simply cant understand whats going on since my setup here is so simple. Here's the config I have on my 819:
hostname Cisco
!
ip domain name regence
!
clock timezone GMT -3
ip dhcp excluded-address 10.10.10.1
!
ip dhcp pool ccp-pool
network 10.10.10.0 255.255.255.0
default-router 10.10.10.1
dns-server 10.10.10.1
lease 3
!
ip dns server
!
ip dns view default
default dns forwarder
default dns forwarding
default domain lookup
default domain name-server
!
interface Vlan1
ip address 10.10.10.1 255.255.255.0
ip nat inside
!
controller Cellular 0
!
chat-script gsm "" "AT!SCACT=1,1" TIMEOUT 60 "OK"
!
interface cellular 0
ip address negotiated
ip nat outside
ip virtual-reassembly in
encapsulation slip
dialer in-band
dialer string gsm
dialer-group 1
async mode interactive
!
ip route 0.0.0.0 0.0.0.0 Cellular0
ip nat inside source list 1 interface Cellular0 overload
!
dialer-list 1 protocol ip permit
!
access-list 1 permit 10.10.10.0 0.0.0.255
!
line 3
exec-timeout 0 0
password cisco
script dialer gsm
login
modem InOut
no exec
transport input all
I have only 6 clients (2 iphones, 3 Windows 10 computers and the LAP1242) trying to connect to the router, and ALL of them are set to get IPs from DHCP, no static IPs. Usually the first 2 or 3 devices connect fine and get valid IPs, but suddenly, some devices wont conenct corrcetly, and get those standard 169.xxx.xxx.xxx IPs.
Router is running the original firmware that came with it, Cisco IOS 15.2 (4) M3. I also uploaded a new firmware by TFTP (15.4 (3) M10) but it didint make a difference, same problem.
The SHOW ARP command results in the following:
Cisco#show arp
Protocol Address Age (min) Hardware Addr Type Interface
Internet 10.10.10.3 0 409c.2837.ea32 ARPA Vlan1
Internet 10.10.10.4 0 48bf.6b29.f308 ARPA Vlan1
Internet 10.10.10.5 2 bcdd.c29b.41d4 ARPA Vlan1
Internet 10.10.10.6 2 4485.00a4.cbee ARPA Vlan1
Internet 10.10.10.7 0 Incomplete ARPA
In this case, one of the WINDOWS 10 LAPTOPS (10.10.10.7) did not get a valid IP address. IP CONFIG shows IP 169.254.229.116. I tried using the 'no ip dhcp conflict logging' config but it didnt make a difference as far as I can tell, as some deviced still wouldnt be able to succesfully connect.
Any help? I still dont get why Im having issues on such a straightforward setup, I must be doing something wrong here.
