04-16-2007 10:27 PM - edited 03-05-2019 03:30 PM
Hi all!
Here is a problem with static DHCP. I have 2 DHCP pools on a router for 2 ethernet subinterfaces:
ip dhcp pool First_Insurance
network 192.168.2.0 255.255.255.0
default-router 192.168.2.1
ip dhcp pool Netassets
network 192.168.4.0 255.255.255.0
default-router 192.168.4.1
interface FastEthernet0/1.2
description First_Insurance
encapsulation dot1Q 2
ip address 192.168.2.1 255.255.255.0
ip access-group First_Insurance_in in
ip nat inside
ip virtual-reassembly
no cdp enable
!
interface FastEthernet0/1.4
description Netassets
encapsulation dot1Q 4
ip address 192.168.4.1 255.255.255.0
ip access-group Netassets_in in
ip nat inside
ip virtual-reassembly
no cdp enable
!
Also there is DHCP pool for binding IP to MAC:
ip dhcp pool Static
origin file tftp://xxx.xxx.xxx.xxx/dhcp/static.txt
TFTP server contains a file with MAC-IP mapping, for example:
192.168.4.2 /24 id 0100.0d61.4520.e3 Infinite
But when a workstation with MAC 000d.6145.20e3 try to obtain information via DHCP it receive address 192.168.4.2 and default router 192.168.2.1!
Where is a problem??
04-16-2007 10:40 PM
can you juz release release & renew the ip address on the workstation, also try clearing the dhcp binding database.
in workstation
--------------
ipconfig /release
ipconfig /renew
in router
---------
router#clear ip dhcp binding *
where * meanz clear all bounded ip addresses.
also i could never see any gateway information in the tftp server mapped file i.e static.txt
04-17-2007 01:16 AM
Ofcourse, i've try to release and renew on workstation - no effect. Same effect from clear ip dhcp binding * and from no service dhcp - ser vice dhcp. Debug DHCP shows this:
Apr 17 10:48:57.952: DHCPD: Sending notification of DISCOVER:
Apr 17 10:48:57.952: DHCPD: htype 1 chaddr 0013.4622.1eda
Apr 17 10:48:57.952: DHCPD: remote id 020a0000c0a8050101000005
Apr 17 10:48:57.952: DHCPD: circuit id 00000000
Apr 17 10:48:57.952: DHCPD: Seeing if there is an internally specified pool class:
Apr 17 10:48:57.952: DHCPD: htype 1 chaddr 0013.4622.1eda
Apr 17 10:48:57.952: DHCPD: remote id 020a0000c0a8050101000005
Apr 17 10:48:57.952: DHCPD: circuit id 00000000
Apr 17 10:48:57.952: DHCPD: child pool: 192.168.2.2 / 255.255.255.0 (Static)
Apr 17 10:48:57.952: DHCPD: parent pool: 192.168.2.0 / 255.255.255.0 (First_Insurance)
Apr 17 10:48:57.952: DHCPD: child pool: 192.168.2.0 / 255.255.255.0 (First_Insurance)
Apr 17 10:48:57.952: DHCPD: pool First_Insurance has no parent.
Apr 17 10:48:57.952: DHCPD: child pool: 192.168.2.2 / 255.255.255.0 (Static)
Apr 17 10:48:57.952: DHCPD: parent pool: 192.168.2.0 / 255.255.255.0 (First_Insurance)
Apr 17 10:48:57.952: DHCPD: child pool: 192.168.2.0 / 255.255.255.0 (First_Insurance)
Apr 17 10:48:57.952: DHCPD: pool First_Insurance has no parent.
Apr 17 10:48:57.952: DHCPD: child pool: 192.168.2.2 / 255.255.255.0 (Static)
Apr 17 10:48:57.952: DHCPD: parent pool: 192.168.2.0 / 255.255.255.0 (First_Insurance)
Apr 17 10:48:57.952: DHCPD: child pool: 192.168.2.0 / 255.255.255.0 (First_Insurance)
Apr 17 10:48:57.952: DHCPD: pool First_Insurance has no parent.
Apr 17 10:48:57.956: DHCPD: Sending notification of ASSIGNMENT:
Apr 17 10:48:57.956: DHCPD: address 192.168.5.7 mask 255.255.255.0
Apr 17 10:48:57.956: DHCPD: htype 1 chaddr 0013.4622.1eda
Apr 17 10:48:57.956: DHCPD: lease time remaining (secs) = 4294967295
04-17-2007 04:02 AM
Dmitry
Does the static pool have any definition of default router?
On which interface is the request from the PC with the matching MAC address arrive?
HTH
Rick
04-18-2007 07:43 PM
Static pool have no any definitions of default router, request arriving on interface fa0/1.5 with address 192.168.5.1
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