Gigabit 0/1 ethernet does not come up on C 1921 router

[godwinagaba]

i have a cisco 1921 router and it has ge0/0 (LAN) and ge(0/1) WAN.

ge 0/0 is well connected and i can ping it and the LED light is on but ge 0/1 has failed to come up.Ge0/1 is connected to an IDU and has a public IP address. The LED light also does not light on ge 0/1.Where could the problem be?

Agaba G

[johnlloyd_13]

hi agaba,

kindly post your sh int g0/1 output. make sure g0/1 and IDU is on the same subnet. try changing UTP cable and test again.

[godwinagaba]

Thanks John

Let me the sh int g/0/1 config to you shortly .Actually the ip address of g/e 0/1 will be the first ip that the idu(from ISP) can access  because the cable is directly connected to the router .Meanwhile as i get the config, could a straight through or crossover be a problem?

[johnlloyd_13]

Hi Agaba,

It could be a Layer 1 issue. You can try using a straight cable.

Basically, cross cable is used to connect two different network devices, i.e. router-router or switch-switch.

Sent from Cisco Technical Support iPhone App

[godwinagaba]

i get the below error when i paste the ge/0/1 config .

"

"This message can not be displayed due to its content.  Please use the Contact Us link with any questions. "

[johnlloyd_13]

hi,

can try uploading or attach your config (remove sensitive info)? not sure whether CSC have any issue.