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Home > Success Center > IP Address Manager (IPAM) > Error adding DHCP scopes from DHCP servers running on Cisco devices

Error adding DHCP scopes from DHCP servers running on Cisco devices

Created by Interspire Import, last modified by MindTouch on Jun 23, 2016

Views: 42 Votes: 0 Revisions: 8

Issue

When a DHCP server is added to IPAM, it shows the number of DHCP scopes discovered after successfully validating the credentials. But after clicking Save, the scopes are not added to the list.

Environment

All versions of IPAM

Resolution

Note: Before doing any work on your Cisco routers, make sure that you have a current backup, as this makes a permanent change to your router.

Add the network address and subnet mask while creating DHCP pool in Cisco devices.

Execute the following commands in config mode on the Cisco Router:

# These 4 commands remove the pools:

no ip dhcp pool Tananger.Desktop 
no ip dhcp pool Tananger.Voice
no ip dhcp pool Tananger.PagingGateway
no ip dhcp pool Dymo.Printer

# The below commands re-add the same scopes, they are just re-arranged

ip dhcp pool Dymo.Printer
host 192.168.44.230 255.255.255.0
hardware-address 0011.e502.a61d

ip dhcp pool Tananger.PagingGateway
host 10.10.44.9 255.255.255.0
hardware-address 000d.b928.d330
default-router 10.10.44.1

ip dhcp pool Tananger.Desktop
network 192.168.44.0 255.255.255.0
default-router 192.168.44.1 
dns-server 10.101.2.22 10.101.2.23 10.100.2.20 
domain-name exprogroup.local
option 150 ip 10.44.100.3 10.101.10.2

ip dhcp pool Tananger.Voice
network 10.10.44.0 255.255.255.0
option 150 ip 10.101.10.2 10.200.10.3 
default-router 10.10.44.1 
dns-server 10.101.2.23 10.100.2.20 
domain-name exprogroup.local


There are four pools defined in the Cisco router. But the host declaration pools are not recognized as separate pools. Instead, the host declaration appears as a reservation within the scope containing the complete network.

Cause

The DHCP pools are configured without the network IP and subnet mask. IPAM will not accept the DHCP pool without the network and mask value.

Last modified
19:39, 22 Jun 2016

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