Hi I got a Cisco router, it is also the DHCP server of my network the detail are below.
For some reason the server randomly stops serving IPs to workstations, even a repair conection does not work. Some computers have a valid IP but it does not get renewed. Router#show version Cisco IOS Software, 2800 Software (C2800NM-ADVIPSERVICESK9-M), Version 12.4(17b) , RELEASE SOFTWARE (fc2) Technical Support: http://www.cisco.com/techsupport Copyright (c) 1986-2008 by Cisco Systems, Inc. Compiled Tue 26-Feb-08 01:46 by prod_rel_team ROM: System Bootstrap, Version 12.4(13r)T, RELEASE SOFTWARE (fc1) I did enable debug and I got : Adding to the above I got the following debug info...as you can see below the mac address 0016.d490.8e9a is trying to get an IP but it is getting the answer..DHCPD: Allocate an address without class information while 0100.40f4.9689 got 192.168.0.204 Router# *Apr 16 14:36:43.375: DHCPD: DHCPDISCOVER received from client 0016.d490.8e9a on interface FastEthernet0/1. *Apr 16 14:36:43.375: DHCPD: Allocate an address without class information (192. 168.0.0) *Apr 16 14:36:43.647: %HA_EM-6-LOG: CLIAccounting: terminal monitor *Apr 16 14:37:00.535: DHCPD: DHCPDISCOVER received from client 0016.d490.8e9a on interface FastEthernet0/1. *Apr 16 14:37:00.535: DHCPD: Allocate an address without class information (192. 168.0.0) *Apr 16 14:37:05.375: DHCPD: DHCPDISCOVER received from client 0016.d490.8e9a on interface FastEthernet0/1. *Apr 16 14:37:05.379: DHCPD: Allocate an address without class information (192. 168.0.0) *Apr 16 14:37:16.375: DHCPD: DHCPDISCOVER received from client 0016.d490.8e9a on interface FastEthernet0/1. *Apr 16 14:37:16.375: DHCPD: Allocate an address without class information (192. 168.0.0) *Apr 16 14:37:29.375: DHCPD: DHCPDISCOVER received from client 0016.d490.8e9a on interface FastEthernet0/1. *Apr 16 14:37:29.379: DHCPD: Allocate an address without class information (192. 168.0.0) *Apr 16 14:37:42.375: DHCPD: DHCPDISCOVER received from client 0016.d490.8e9a on interface FastEthernet0/1. *Apr 16 14:37:42.375: DHCPD: Allocate an address without class information (192. 168.0.0) *Apr 16 14:37:43.551: DHCPD: DHCPINFORM received from client 0100.40f4.9689.ec ( 192.168.0.204). *Apr 16 14:37:43.551: DHCPD: Sending DHCPACK to client 0100.40f4.9689.ec(192.16 8.0.204). *Apr 16 14:37:43.551: DHCPD: unicasting BOOTREPLY to client 0040.f496.89ec (192. 168.0.204). *Apr 16 14:37:46.555: DHCPD: DHCPINFORM received from client 0100.40f4.9689.ec ( 192.168.0.204). *Apr 16 14:37:46.555: DHCPD: Sending DHCPACK to client 0100.40f4.9689.ec(192.16 8.0.204). *Apr 16 14:37:46.555: DHCPD: unicasting BOOTREPLY to client 0040.f496.89ec (192. 168.0.204). *Apr 16 14:38:00.371: DHCPD: DHCPDISCOVER received from client 0016.d490.8e9a on interface FastEthernet0/1. *Apr 16 14:38:00.371: DHCPD: Allocate an address without class information (192. 168.0.0) *Apr 16 14:38:07.115: DHCPD: DHCPINFORM received from client 0100.1676.6d3b.5e ( 192.168.0.182). *Apr 16 14:38:07.115: DHCPD: Sending DHCPACK to client 0100.1676.6d3b.5e (192.16 8.0.182). *Apr 16 14:38:07.115: DHCPD: unicasting BOOTREPLY to client 0016.766d.3b5e (192. 168.0.182). *Apr 16 14:38:10.115: DHCPD: DHCPINFORM received from client 0100.1676.6d3b.5e ( 192.168.0.182). *Apr 16 14:38:10.115: DHCPD: Sending DHCPACK to client 0100.1676.6d3b.5e (192.16 8.0.182). *Apr 16 14:38:10.115: DHCPD: unicasting BOOTREPLY to client 0016.766d.3b5e (192. 168.0.182). Please advice. The pool is: #show ip dhcp pool Pool centrale : Utilization mark (high/low) : 100 / 0 Subnet size (first/next) : 0 / 0 Total addresses : 254 Leased addresses : 143 Pending event : none 1 subnet is currently in the pool : Current index IP address range Leased addr 0.0.0.0 192.168.0.1 - 192.168.0.254 143 _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
