01-19-2008 12:59 AM - edited 03-05-2019 08:34 PM
Hi Guys, I just got an Ethernet 4E card for my 3620 and only 1 Interface at a time seems to be grabbing an IP Address from DHCP
All 4 interfaces are set to DHCP and no shut.
"Cisco3620#sh ip int brief
Interface IP-Address OK? Method Status Protocol
Ethernet0/0 unassigned YES DHCP up up
Ethernet0/1 10.30.0.1 YES NVRAM up up
Ethernet0/2 10.29.0.15 YES DHCP up up
Ethernet0/3 unassigned YES DHCP up up
BRI1/0 unassigned YES NVRAM administratively down down
Ethernet1/0 unassigned YES DHCP up up
Serial1/0 unassigned YES NVRAM administratively down down
BRI1/0:1 unassigned YES unset administratively down down
BRI1/0:2 unassigned YES unset administratively down down
Tunnel0 192.168.6.2 YES NVRAM up down
Tunnel1 192.168.15.2 YES NVRAM up down"
Below is my config:
Cisco3620#sh run
Building configuration...
Current configuration : 1510 bytes
!
version 12.3
service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption
!
hostname Cisco3620
!
boot-start-marker
boot-end-marker
!
enable password 7 ####
!
no aaa new-model
ip subnet-zero
!
!
ip cef
!
ip dhcp pool Wireless(Eth1)
network 10.30.0.0 255.255.255.248
default-router 10.30.0.1
domain-name w1.ap1.noe.home
lease infinite
!
interface Ethernet0/0
description LAN
ip address dhcp
half-duplex
!
interface Ethernet0/1
ip address 10.30.0.1 255.255.255.248
half-duplex
!
interface Ethernet0/2
ip address dhcp
half-duplex
!
interface Ethernet0/3
ip address dhcp
half-duplex
!
interface BRI1/0
no ip address
encapsulation hdlc
shutdown
!
interface Ethernet1/0
ip address dhcp
half-duplex
!
interface Serial1/0
no ip address
shutdown
!
ip http server
ip classless
!
gatekeeper
shutdown
!
!
line con 0
line aux 0
line vty 0 4
password 7 ###
login
!
!
end
Running IOS: c3620-ix-mz.123-17a.bin
Any idea's?
Cheers, Mike.
01-19-2008 08:03 AM
Hi Mike,
Please provide info about how you are connected to the DHCP server with the Ethernet cards not succeding with getting an IP address.
General problems with DHCP may include the following:
1. Failure to configure a DHCP relay agent if the client is not directly connected to a DHCP server
2. No backward route in the routing table from the DHCP server to the subnet where the DHCP request came from.
3. Failure to configure excluded addresses in the DHCP server for addresses that are already assigned manually to default gateways or other hosts.
The DHCP server of course tries to assign an IP address from your range defined in the "network" command under the "dhcp-config" prompt, generally the first usable one in the specified subnet. If this IP address is already assigned manually on the subnet, ensure that this address is excluded from the DHCP pool with the "ip dhcp excluded-address" global config command.
Please verify these and inform me about your success.
Best regards:
Istvan
01-19-2008 08:52 AM
You are connecting the other LAN interfaces on different Vlans? If so, do you have a ip helper-address on the gateway from that Vlan so dhcp request can be forwarded to the server ?
If they are on the same Vlan, that design won't work. They need to be on separate Vlans.
Also, provide the model of the 4Port Module.
__
Edison.
01-19-2008 09:50 AM
Please explain what you are trying to do . Are you thinking the actual interfaces on the router are going to pull an address ??? I only see one dhcp pool of 7 addresses defined . Probably devices on E0/1 are working correct ?
01-19-2008 01:23 PM
Glen, I was thinking about the same thing. The IP address he wants aren't being generated by the router's DHCP. If you noticed E0/2, the subnet is not on the pool therefore I assume it was generated by a separated DHCP server.
Very odd config, I must say.
__
Edison.
01-20-2008 02:16 AM
Hi Edison,
I interpret this config the same way.
He wants to get the IP addresses from a different DHCP server.
At the same time this router acts as the DHCP server for the wireless clients.
Istvan
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