Cisco 877W - Config Help

Anthro

Anthro

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Hi there people.

Long story short.

ISP left this modem at our offices, don't want it back either.

I need to reset it and "play" a bit

NO idea where to start, already reset it to defaults - but it does not hand out DHCP (as it seems)
Any help will be appreciated !! :love:
2870-rear.jpg
 
It should dish out DHCP IP's.
What happens when you connect a console cable to it?
 
syntax said:
It should dish out DHCP IP's.
What happens when you connect a console cable to it?
Click to expand...

Heres where I am baffled - the console cables I am aware , have a LAN end and a Serial end - any idea what it's default IP will be..? The internets fluctuate with that answer :'(
Going to hold in the RESET for a while longer, and simply connect to it via one of the LAN interfaces, maybe I was impatient
 
Anthro said:
Heres where I am baffled - the console cables I am aware , have a LAN end and a Serial end - any idea what it's default IP will be..?
Click to expand...

It does not have a IP, it uses standard serial protocol, settings,
Bits per sec : 9600
Data bits : 8
Parity : none
Stop bits : 1
Flow control : none

If it's password protected you will have to perform a break sequence during bootup. On hyper-term it's ctrl+break if I remember correctly and then you will have to change some config registers & wipe or change the config.
 
it does not use ip's.. download putty. Get a usb to serial converter is you dont have a serial port.
Run putty choose serial and input the com port of the usb to serial device and wholla.
 
I think it resets to 10.10.10.1 on the lan segment, you can try give yourself a static and ping it, but it would be much better to just console in and see whats happening.

Go to matric and get a usb to serial converter, costs like R99
 
With Cisco you have to set up Ip addresses DHCP server/client etc.
Download putty and serial into the device!

If you have performed a hard reset on the router then you won't be required to login once you
serial into the Cisco.

Here is some command line examples to get you going:

Enter configuration mode
>conf t
'Enter configuration commands, one per line. End with CNTL/Z.'

Set router hostname
>hostname myrouter

Set IP address:
>interface vlan 1
>ip address 192.169.0.1 255.255.255.0
>exit
>exit

Show running config:
>sh run
 
Managed to get into the Cisco SDM config. (LAN ip assigned)
It gets to the part where I specify a WAN interface (Screen does not show the options to change anything though ??) i is almost like the screen does not advance to section where username may be entered.

Some answers on the net suggest incompatibility with newer versions of java
 
Last edited:
Anthro said:
Managed to get into the Cisco SDM config. (LAN ip assigned)
It gets to the part where I specify a WAN interface (Screen does not show the options to change anything though ??) i is almost like the screen does not advance to section where username may be entered.

Some answers on the net suggest incompatibility with newer versions of java
Click to expand...

welcome to the hell that is SDM and java compatibility.
I have hardly ever used SDM but i know there is a specific compatible version that works.

Otherwise, CLI, that is the way
 
syntax said:
welcome to the hell that is SDM and java compatibility.
I have hardly ever used SDM but i know there is a specific compatible version that works.

Otherwise, CLI, that is the way
Click to expand...

Unsure to even know what to enter, im a GUI boy .. dammit

I can telnet into it, but the rest evades me.
Pity theres no sample configs out there

This site produces a config of sorts.. I reckon thats what needs to be typed out ?

http://www.ifm.net.nz/cookbooks/800-isr-wizard.html

EDIT

Anyone here that can dump their config (obviously remove your username + password and other sensitive bits)
 
Last edited:
Anthro said:
Unsure to even know what to enter, im a GUI boy .. dammit

I can telnet into it, but the rest evades me.
Pity theres no sample configs out there

This site produces a config of sorts.. I reckon thats what needs to be typed out ?

http://www.ifm.net.nz/cookbooks/800-isr-wizard.html

EDIT

Anyone here that can dump their config (obviously remove your username + password and other sensitive bits)
Click to expand...

what do you want to do and what internal ranges do you want and i will put something together for you
 
syntax said:
what do you want to do and what internal ranges do you want and i will put something together for you
Click to expand...

Shot dude !!
Indeed it is java related, turned on java console and it throws a null pointer !! whaat the fuuuuuu

You can use 192.168.4.1 for router, enable DHCP 192.168.4.2-192.168.4.250
DNS you can use Google DNS
Uhm, what else .. ? It just basically needs to be a WAN modem, with Wifi enabled - I can change things later (decided I need some light reading to do on Cisco)
 
Last edited:
Anthro said:
Shot dude !!
Indeed it is java related, turned on java console and it throws a null pointer !! whaat the fuuuuuu

You can use 192.168.4.1 for router, enable DHCP 192.168.4.2-192.168.4.250
DNS you can use Google DNS
Uhm, what else .. ? It just basically needs to be a WAN modem, with Wifi enabled - I can change things later (decided I need some light reading to do on Cisco)
Click to expand...

You said you have telnet running already so here is a basic config, substitute the words in capital letter with your values, and copy and paste section by section in your CLI. Let me know if it works?

dot11 syslog
!
dot11 ssid YOUR_SSID
max-associations 10
authentication open
authentication key-management wpa
wpa-psk ascii 0 YOUR-WIFI-PASSWORD
!
ip cef
!
ip dhcp excluded-address 192.168.4.1
ip dhcp excluded-address 192.168.4.251 192.168.4.254
!
ip dhcp pool ipv4-dhcp
import all
network 192.168.4.0 255.255.255.0
default-router 192.168.4.1
dns-server 8.8.8.8 8.8.4.4
!
ip auth-proxy max-nodata-conns 3
ip admission max-nodata-conns 3
!
archive
log config
hidekeys
!
bridge irb
!
interface ATM0
no ip address
no atm ilmi-keepalive
dsl operating-mode auto
no shut
!
interface ATM0.1 point-to-point
no shut
pvc 8/35
pppoe-client dial-pool-number 1
!
!
interface FastEthernet0
switchport access vlan 1
no shut
!
interface FastEthernet1
switchport access vlan 1
no shut
!
interface FastEthernet2
switchport access vlan 1
no shut
!
interface FastEthernet3
switchport access vlan 1
no shut
!
interface Dot11Radio0
no ip address
no shut
!
encryption mode ciphers tkip
!
broadcast-key change 60
!
ssid YOUR_SSID
!
speed basic-1.0 basic-2.0 basic-5.5 basic-6.0 basic-9.0 basic-11.0 basic-12.0 basic-18.0 basic-24.0 basic-36.0 basic-48.0 basic-54.0
channel 2462
station-role root
world-mode dot11d
country ZA indoor
no cdp enable
bridge-group 1
bridge-group 1 subscriber-loop-control
bridge-group 1 spanning-disabled
bridge-group 1 block-unknown-source
no bridge-group 1 source-learning
no bridge-group 1 unicast-flooding
!
interface Vlan1
no ip address
ip virtual-reassembly
ip tcp adjust-mss 1400
bridge-group 1
hold-queue 100 out
no shut
!
!
interface Dialer0
ip address negotiated
ip mtu 1492
ip nat outside
ip virtual-reassembly
encapsulation ppp
ip tcp adjust-mss 1452
dialer pool 1
dialer-group 1
ppp authentication chap pap callin
ppp chap hostname ADSL-USERNAME
ppp chap password 0 ADSL-PASSWORD
ppp pap sent-username ADSL-USERNAME password 0 ADSL-PASSWORD
no shut
!
interface BVI1
description BRIDGE-DOT11-VLAN1
bandwidth 102400
ip address 192.168.4.1 255.255.255.0
ip nat inside
ip virtual-reassembly
ip tcp adjust-mss 1452
no shut
!
ip forward-protocol nd
ip route 0.0.0.0 0.0.0.0 Dialer0
!
!
no ip http server
no ip http secure-server
ip dns server
ip nat inside source list 1 interface Dialer0 overload
!
access-list 1 remark PERMIT-LAN
access-list 1 permit 192.168.4.0 0.0.0.255
!
bridge 1 protocol ieee
bridge 1 route ip
!
end
!
wr
 
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