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Telnet access through Router 3925 not working

nmiguelfc
Level 1
Level 1

Hello,

I have 68 sites with Routers. On each site I have one equipment DIRECTLY connected to the Router that needs to be accessed by telnet port 23.

I have 15 off this sites that the access via telnet to the equipment’s connected after the routers are not working. These sites are using Router Cisco 3925. The other sites that are working are using Routers Cisco MWR 2921.

Both router models are running the same configuration with no filter on it.

The equipment’s after the routers are all accessed directly via telnet without the router. If the router is directly plugged to the equipment the 15 sites with Router Cisco 3925 are not accessed via telnet.

There is any bug related with the IOS version that Router Cisco 3925 is using?:

  • Cisco IOS Software, C3900 Software (C3900-UNIVERSALK9-M), Version 15.1(2)T2, RELEASE SOFTWARE (fc1).
  • ROM: System Bootstrap, Version 15.0(1r)M8, RELEASE SOFTWARE (fc1).
  • System image file is "flash0:c3900-universalk9-mz.SPA.151-2.T2.bin"

Thanks in advance,

Nuno Carrilho

5 Replies 5

paolo bevilacqua
Hall of Fame
Hall of Fame

You have a configuration problem.

Best approach, if you are the end user, give the issue to a professional.

Agree Check Your Configuration

Jawad

Hi there,

I am not the end user.

As I mentioned, if I connect my laptop directly to the lan port of the  equipment, I can telnet but not through the router.

Configuration is below. Equipment is directly connected to interface FastEthernet1/12, using interface Vlan900, vrf AAA-VPN.


Cisco IOS Software, C3900 Software (C3900-UNIVERSALK9-M), Version 15.1(2)T2, RELEASE SOFTWARE (fc1)
ROM: System Bootstrap, Version 15.0(1r)M8, RELEASE SOFTWARE (fc1)

System image file is "flash0:c3900-universalk9-mz.SPA.151-2.T2.bin"

######################################################################################

ip vrf forwarding AAA-VPN

!

ip vrf AAA-VPN

rd 100:100

route-target export 100:100

route-target import 100:100

!

ip vrf BBB-VPN

rd 400:3

route-target export 400:3

route-target import 400:3

!

interface FastEthernet1/12

description XXXXX

switchport mode trunk

!

interface Vlan411

description XXXXX

ip vrf forwarding BBB-VPN

ip address XXXXX 255.255.255.248

!

interface Vlan900

description XXXXX

ip vrf forwarding AAA-VPN

ip address XXXXX 255.255.255.248

!

!

You can't because you have no access to the other VRF . Even telnetting FROM the router you should specify the VRF you source from...
However you should revisit your aaa configuration too.

Hope this help
Alessio

Sent from Cisco Technical Support iPad App

Agree Check with above post.

Jawad
Review Cisco Networking for a $25 gift card