Hi all,

Can anyone help me work out why my switch is not picking up a reserved address from the second pool below?

Router is a Cisco 877 and Switch is a Cisco 2960.

Config follows and further down you see console output with dhcp debugging on.

Thank you for any assistance.

Seabro

ps. I have also tried 'hardware-address 0024.f769.bf40 1' which is hardware type 'other'


Config

ip dhcp excluded-address 172.23.23.1 172.23.23.49
!
ip dhcp pool main
import all
network 172.23.23.0 255.255.255.0
default-router 172.23.23.1
dns-server 172.22.10.20 172.22.10.21
domain-name ourdomain.co.uk
!
ip dhcp pool Switch1
import all
host 172.23.23.200 255.255.255.0
hardware-address 0024.f769.bf40 ieee802
client-name sw1
!



Router#
*Mar 26 15:37:39.787: DHCPD: checking for expired leases.
Router#
*Mar 26 15:38:19.464: %LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan1, changed state to up
*Mar 26 15:38:20.456: %LINK-3-UPDOWN: Interface FastEthernet0, changed state to up
*Mar 26 15:38:21.456: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0, changed state to up
Router#
*Mar 26 15:38:48.740: DHCPD: Sending notification of DISCOVER:
*Mar 26 15:38:48.740: DHCPD: htype 1 chaddr 0024.f769.bf40
*Mar 26 15:38:48.740: DHCPD: remote id 020a0000ac171701000000010000
*Mar 26 15:38:48.740: DHCPD: circuit id 00000000
*Mar 26 15:38:48.740: DHCPD: DHCPDISCOVER received from client 0063.6973.636f.2d30.3032.342e.6637.3639.2e62.6634.302d .566c.31 on interface Vlan1.
*Mar 26 15:38:48.740: DHCPD: Seeing if there is an internally specified pool class:
*Mar 26 15:38:48.740: DHCP
Router#D: htype 1 chaddr 0024.f769.bf40
*Mar 26 15:38:48.740: DHCPD: remote id 020a0000ac171701000000010000
*Mar 26 15:38:48.740: DHCPD: circuit id 00000000
*Mar 26 15:38:48.740: DHCPD: Sending DHCPOFFER to client 0063.6973.636f.2d30.3032.342e.6637.3639.2e62.6634.302d.566c. 31 (172.23.23.53).
*Mar 26 15:38:48.740: DHCPD: broadcasting BOOTREPLY to client 0024.f769.bf40.
*Mar 26 15:38:48.744: DHCPD: DHCPREQUEST received from client 0063.6973.636f.2d30.3032.342e.6637.3639.2e62.6634.302d. 566c.31.
*Mar 26 15:
Router#38:48.744: DHCPD: Sending notification of ASSIGNMENT:
*Mar 26 15:38:48.744: DHCPD: address 172.23.23.53 mask 255.255.255.0
*Mar 26 15:38:48.744: DHCPD: htype 1 chaddr 0024.f769.bf40
*Mar 26 15:38:48.744: DHCPD: lease time remaining (secs) = 86400
*Mar 26 15:38:48.744: DHCPD: Appending default domain from pool
*Mar 26 15:38:48.744: DHCPD: Using hostname 'Switch.ourdomain.co.uk' for dynamic update (from hostname option)
*Mar 26 15:38:48.748: DHCPD: Sending DHCPACK to client 0063.6973.636f.2d30.30
Router#32.342e.6637.3639.2e62.6634.302d.566c.31 (172.23.23.53).
*Mar 26 15:38:48.748: DHCPD: broadcasting BOOTREPLY to client 0024.f769.bf40.
Router#
*Mar 26 15:39:39.754: DHCPD: checking for expired leases.
Router#

Add this to the pool:

client-identifier 0100.24f7.69bf.40

_________________
www.mellowd.co.uk/ccie/

Thanks mellowd, I was just reading your blog

I added that line and the 'hardware-address' line disappeared.

After adding, console showed:
Router(dhcp-config)#client-identifier 0100.24f7.69bf.40
Router(dhcp-config)#
*Mar 26 18:13:30.975: DHCPD: Sending notification of TERMINATION:
*Mar 26 18:13:30.975: DHCPD: address 172.23.23.200 mask 255.255.255.0
*Mar 26 18:13:30.975: DHCPD: reason flags: noalloc
*Mar 26 18:13:30.975: DHCPD: lease time remaining (secs) = -1
*Mar 26 18:13:30.979: DHCPD: Adding binding to radix tree (172.23.23.200)
*Mar 26 18:13:30.979: DHCPD: Adding binding to hash tree
Router(config)#

I jumped on the switch and shut/no shut vlan 1 and it picked up a .50 address grrrrr.

Any further ideas?

Config now reads:

ip dhcp pool main
import all
network 172.23.23.0 255.255.255.0
default-router 172.23.23.1
dns-server 172.22.10.20 172.22.10.21
domain-name ourdomain.co.uk
!
ip dhcp pool Switch1
import all
host 172.23.23.200 255.255.255.0
client-identifier 0100.24f7.69bf.40
client-name sw1

Any further ideas?

Yup. Try Ivan's suggestion here: http://blog.ioshints.info/2007/08/defau ... nt-id.html

Configure this on the switch layer3 port you're trying to get an address for.

_________________
www.mellowd.co.uk/ccie/