10-12-2009 02:39 AM - edited 03-04-2019 06:20 AM
Hi,
I have a problem wherein when i put the Cisco Router 1841 between the Firewall and the ISP Modem, I get line protocol is down for both the fast ethernet interfaces.
Whereas when I bring router outside to test from some other interface, the router interfaces work perfectly fine. The addresses are fine and the cable is fine too. This Router has to be swapped with a another Router that is in operation which works fine when put between the ISP Modem and Firewall.
Really appreciate if someone could give any insights as to where I am wrong here.
Current configuration : 1321 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption
!
hostname xxxxxxx
!
boot-start-marker
boot-end-marker
!
enable secret 5 $1$mibt$SsPzfEEDQ/.n2jo5IYHSj/
!
no aaa new-model
ip cef
!
!
!
!
no ip domain lookup
ip name-server xxxxxx
!
!
username xxxxx password 7 15210C04527A7975
username xxxxxxxxxxx privilege 5 password 7 1511021F07257A767B
!
!
!
!
interface Loopback1
ip address 10.1.1.1 255.255.255.255
!
interface FastEthernet0/0
ip address xxxxxx 255.255.255.240
speed auto
full-duplex
!
interface FastEthernet0/1
ip address xxxxx 255.255.255.252
duplex auto
speed auto
!
interface Serial0/0/0
no ip address
shutdown
no fair-queue
clock rate 2000000
!
no ip forward-protocol nd
ip route 0.0.0.0 0.0.0.0 xxxxx
ip dns server
!
no ip http server
no ip http secure-server
!
snmp-server group xxxxx v3 auth match exact
snmp-server community xxxxx RO
snmp-server enable traps flash insertion removal
snmp-server enable traps config
snmp-server host 192.168.18.121 version 3 auth xxxxxxx
!
control-plane
!
privilege exec level 5 show
!
line con 0
no ip http server
no ip http secure-server
!
!
control-plane
!
privilege exec level 5 show
!
line con 0
password 7 050809013243420C485744
line aux 0
line vty 0 4
password 7 104F581B5714410F58017F
login
!
scheduler allocate 20000 1000
end
Thanks
10-12-2009 01:01 PM
HI ,
I am seeing the Interface configured as Duplex and Speed as Auto. Might be that cause of this problem. Please change the Duplex setting to auto to try full or half and also speed 100 or 10 . try this combination.
Duplex full
Speed 100
Duplex half
Speed 10
Duplex half
Speed 100
Double full
Speed 10
Try this able Combination and let me know.
08-24-2019 12:51 PM
08-24-2019 02:40 PM
After posting your addition to this quite old discussion, you then posted again starting a new discussion about this issue. In that discussion it was identified that you need a cable connecting the router interface to your PC. Without a cable connected then the expected behavior is for the router interface to be line protocol down.
HTH
Rick
08-25-2019 06:02 AM
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