Cisco 837 ADSL router interface Ethernet2 down and can’t bring it up.

[marianodaniel]

Hello! I am one of the poor sods stuck with this kind of complex & old router model.

I managed to assign an ip address to Ethernet2, however, I can´t seem to find a way to bring the interface up.

Anyone care to help?

I´ve been struggling with it for two days, and although fun and challenging! I need the router working.

My idea is to access the web gui, configure & secure it, and then keep exploring IOS.

Thanks a lot in advance!

[Georg Pauwen]

Hello,

odd, again...

Try and disable/reenable the DHCP service:




cisco837#conf t

cisco837(config)#no service dhcp

cisco 837(config)#service dhcp

[marianodaniel]

Still no good. What’s the best take to delete all configs on the router and start from scratch?

Current config:

cisco837#show configuration 
Using 1125 out of 131072 bytes
!
version 12.4
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname cisco837
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
!
resource policy
!
!
!
no ip dhcp use vrf connected
!
ip dhcp pool LAN
network 192.168.1.0 255.255.255.0
   default-router 192.168.1.1 
   dns-server 8.8.8.8 
   domain-name reload
!
!
ip cef
!
!
!
partition flash 2 11 1
!
!
! 
!
!
!
interface Ethernet0
 no ip address
 shutdown
 hold-queue 100 out
!
interface Ethernet2
!
interface Ethernet0
 no ip address
 shutdown
 hold-queue 100 out
!
interface Ethernet2
 ip dhcp client client-id Ethernet2
 ip dhcp client lease 365 0 0
 ip address 192.168.1.1 255.255.255.0
 hold-queue 100 out
!
interface ATM0
 no ip address
 shutdown
 no atm ilmi-keepalive
 dsl operating-mode auto
!
interface FastEthernet1
 duplex auto
 speed auto
!
interface FastEthernet2
 duplex auto
 speed auto
!
interface FastEthernet3
 duplex auto
 speed auto
!
 duplex auto
 speed auto
!
interface FastEthernet3
 duplex auto
 speed auto
!
interface FastEthernet4
 duplex auto
 speed auto
!
!
no ip http server
no ip http secure-server
!
!
!
!
control-plane
!
!
line con 0
 no modem enable
line aux 0
line vty 0 4
 login
!
scheduler max-task-time 5000
end

[Georg Pauwen]

Hello,

cisco837#wr erase

then reload, that will wipe the entire config.

[marianodaniel]

Thank you! I have and it erased everything. I’ve gone the simple way, setup the dhcp, but still not getting a ping response. Darn.

For the dhcp:
#ip dhcp pool LAN
#192.168.0.1 255.255.255.0 
#network 192.168.0.1 255.255.255.0
#default-router 192.168.1.1 
#dns-server 8.8.8.8

For the Interface
#inter e2
#ip address 192.168.1.1 255.255.255.0
#no shutdown

nterface is up, not sure why not picking up *sigh*

Interface                  IP-Address      OK? Method Status                Protocol
FastEthernet1              unassigned      YES unset  down                  down    
FastEthernet2              unassigned      YES unset  down                  down    
FastEthernet3              unassigned      YES unset  down                  down    
FastEthernet4              unassigned      YES unset  up                    up      
Ethernet0                  unassigned      YES unset  administratively down down    
ATM0                       unassigned      YES unset  administratively down down    
Ethernet2                  192.168.1.1     YES manual up                    up      
cisco837#

[Georg Pauwen · Accepted solution]

Hello,

that doesn't look right (0 and 1 are reversed):

For the dhcp:

#ip dhcp pool LAN
#192.168.0.1 255.255.255.0 
#network 192.168.0.1 255.255.255.0 <-- that needs to be network 192.168.1.0
#default-router 192.168.1.1 
#dns-server 8.8.8.8

[marianodaniel · Accepted solution]

@Georg Pauwen thanks for replying! You did it! Thanks so much for the amazing help. Let’s explore this nice router and see what it can do. I will surely invest in a few Cisco Switches as well to start a home lab.

Thanks a lot again Georg, you are the best!

[marianodaniel]

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