03-06-2007 12:29 PM - edited 03-03-2019 04:03 PM
I have a Cisco 1700 Series router pluged into a cable modem; connection type coming from the cable modem is DHCP. I have DHCP enabled on E0 on the 1700 but I am getting a lot of errors on the interface. Does anyone have a sample configuration of a 1700 E0 facing a cable modem for DHCP connectivity?
03-06-2007 10:06 PM
hi
what kinda errors you are seeing on the interface ?
Are you seeing any CRC/Input/interface resets on the interface ?
can you post the output of show interface e0 here ?
Also did you try changing the cable connecting both the router and the cable modem ?
regds
03-07-2007 06:32 AM
03-07-2007 06:54 AM
How can i view ur attachment?
03-07-2007 07:08 AM
should be able to open in paint or windows image.
03-07-2007 07:28 AM
Did u used the ip-helper address command to forward broadcast cause as u know a router doesn' t forward broadcast pakkets?
ps: can u please paste a screen-shot of ur start or running config
03-07-2007 07:49 AM
Here is the running config. I did not use the IP-Helper
------------------ show running-config ------------------
Building configuration...
Current configuration : 1360 bytes
!
version 12.2
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname PARADIS_1700
!
logging queue-limit 100
!
ip subnet-zero
!
!
ip dhcp excluded-address 192.168.1.1 255.255.255.0
ip dhcp excluded-address 192.168.1.2 192.168.1.99
ip dhcp excluded-address 192.168.1.150 192.168.1.254
!
ip dhcp pool PARADIS
network 192.168.1.0 255.255.255.0
default-router 192.168.1.1 255.255.255.0
dns-server 68.9.16.30 68.9.16.25 68.100.16.30
!
ip audit notify log
ip audit po max-events 100
!
!
!
!
!
!
class-map match-all paradis
match access-group name PARADIS
!
!
policy-map Paradispolicy
class paradis
!
!
!
interface Ethernet0
ip address dhcp
service-policy input Paradispolicy
service-policy output Paradispolicy
half-duplex
!
interface FastEthernet0
ip address 192.168.1.1 255.255.255.0
service-policy input Paradispolicy
service-policy output Paradispolicy
speed 100
full-duplex
!
ip classless
ip route 0.0.0.0 0.0.0.0 68.229.82.1
no ip http server
no ip http secure-server
!
!
!
ip access-list extended PARADIS
permit tcp any any eq 2869
permit tcp any any eq 10243
permit udp any any eq 1900
permit udp any any range 10280 10284
!
no cdp run
!
!
line con 0
line aux 0
line vty 0 4
exec-timeout 30 0
privilege level 15
password
login local
transport input telnet
!
end
03-07-2007 09:23 AM
Can you tell me what the configuration should look like?
03-07-2007 07:40 AM
The carrier is an electrical signal that Ethernet devices use to detect whether the wire is currently being used by another transmitting station.
The lost carrier counter increases each time a carrier sense loss occurs. This happens when the hardware is transmitting a frame onto the wire and does not see its own carrier wave on the Ethernet
03-07-2007 07:51 AM
We were testing is why the lost carrier; we kept switching cables and plugging the cable back into his existing Linksys when we needed internet back up
03-08-2007 01:46 AM
what kind of error are u getting from ur Ethernet interfaces?
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