Solved: Hi Paquinjrm, Router in sitck

paquinjrm · ‎04-03-2014

Good afternoon,

I'm trying to configure DHCP using CLI on a 2610 router and 2950 switch. With my present config, the host at the end of the switch (configured to receive ip via DHCP) is not getting anything assigned. Here are some shows:

Router:

Router_1#show ip int br
Interface IP-Address OK? Method Status Protocol
FastEthernet0/0 192.168.10.1 YES manual up up (leading to switch)
Serial0/0 unassigned YES unset administratively down down
Serial0/1 unassigned YES unset administratively down down
Ethernet1/0 unassigned YES unset administratively down down
Ethernet1/1 unassigned YES unset administratively down down
Ethernet1/2 unassigned YES unset administratively down down
Ethernet1/3 unassigned YES unset administratively down down

Router_1#show ip dhcp pool

Pool acer_pool :
Utilization mark (high/low) : 100 / 0
Subnet size (first/next) : 0 / 0
Total addresses : 254
Leased addresses : 0
Pending event : none
1 subnet is currently in the pool :
Current index IP address range Leased addresses
192.168.10.1 192.168.10.1 - 192.168.10.254 0

Switch:

Switch_1#show ip int br
Interface IP-Address OK? Method Status Protocol
Vlan1 unassigned YES NVRAM    up up
FastEthernet0/1 unassigned YES unset up up (leading to router)
FastEthernet0/2 unassigned YES   unset       down down
FastEthernet0/3 unassigned YES   unset       down down
FastEthernet0/4 unassigned YES   unset       down down
FastEthernet0/5 unassigned YES   unset       down down
FastEthernet0/6 unassigned YES   unset       down down
FastEthernet0/7 unassigned YES   unset       down down
FastEthernet0/8 unassigned YES   unset       down down
FastEthernet0/9 unassigned YES   unset       down down
FastEthernet0/10 unassigned YES   unset       down down
FastEthernet0/11 unassigned YES   unset       down down
FastEthernet0/12 unassigned YES   unset       down down
FastEthernet0/13 unassigned YES   unset       down down
FastEthernet0/14 unassigned YES   unset       down down
FastEthernet0/15 unassigned YES   unset       down down
FastEthernet0/16 unassigned YES   unset       down down
FastEthernet0/17 unassigned YES   unset       down down
FastEthernet0/18 unassigned YES   unset       down down
FastEthernet0/19 unassigned YES   unset       down down
FastEthernet0/20 unassigned YES   unset       down down
FastEthernet0/21 unassigned YES   unset       down down
FastEthernet0/22 unassigned YES   unset       up up
FastEthernet0/23 unassigned YES   unset down down
FastEthernet0/24 unassigned YES   unset down down

What other info can I supply to resolve this?

Thanks.

Leo Laohoo · ‎04-03-2014

I think you need to configure router-on-a-stick.

Post your DHCP configuration.

View solution in original post

Leo Laohoo · ‎04-03-2014

I think you need to configure router-on-a-stick.

Post your DHCP configuration.

paquinjrm · ‎04-03-2014

it was indeed a question of configuring router-on-a-stick. I'd already set up the vlans and switchports on the switch (to practice VTP) so it was just a matter of configuring the subinterfaces to match. Quite easy, really.

Thanks for the help.

Btw, I found this tutorial that takes you step by step:

http://youtu.be/FpwllixrQQo

mohabdel · ‎04-04-2014

Hi Paquinjrm,

Router in sitck 100% wrong answer. router in sitck for trunking ONLY. anyway. I want you direct connect your pc to your router fa0/0 if you get IP address from your router this mean you config DHCP correct. and issue from your switch. If you did not get any IP from your router this mean you maybe neet reconfig DHCP scope

go to your router CLI

r2600# config t

# service DHCP

#ip dhcp pool DATA

#network 192.168.10.0 255.255.255.0

#default-router 192.168.10.1

#lease infinite

# dns-server 8.8.8.8

#end

wr mem

make sure your switchport in default vlan

2600 router and 2650 switch not cisco small business devices so if you need more information please

https://supportforums.cisco.com/community/6016/lan-switching-and-routing

Thanks,

Moh

paquinjrm · ‎04-04-2014

Hi Moh,

First, thanks for pointing out that I'm in the wrong section of the forums. My bad. I'll pay closer attention next time.

Second, I tried your suggestion but it failed to work. I cleared the configs of the router so I could start with a clean slate and followed your commands to the letter. The host can't seem to get an IP assigned and the here's what I get with a Show IP DHCP Pool:

Router_1#show ip dhcp pool

Pool vlan1 :
Utilization mark (high/low) : 100 / 0
Subnet size (first/next) : 0 / 0
Total addresses : 254
Leased addresses : 0
Pending event : none
1 subnet is currently in the pool :
Current index IP address range Leased addresses
192.168.10.1 192.168.10.1 - 192.168.10.254 0

Am I missing something?

mohabdel · ‎04-04-2014

Hi Paquinijrm,

no you did not missing any. Sorry I did miss something

# ip dhcp excluded-address 192.168.10.1 192.168.10.99

add this command with dhcp command.

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