无线获取不到地址 服务器,部分无线终端无法通过DHCP获取IP地址问题经验案例...
(1)?檢查?DHCP?服務器配置
DHCP?服務器上的配置如下，不存在問題。
#
dhcp?server?ip-pool?1
network?1.1.0.0?mask?255.255.0.0
#
……
#
interface?Ethernet1/0
port?link-mode?route
ip?address?1.1.1.1?255.255.255.0
#
……
#
dhcp?enable
#
(2)?檢查?DHCP?服務器上接口Ethernet1/0?的狀態
與?DHCP?客戶端相連的接口Ethernet1/0?處于up?狀態。
[server]?display?ip?interface?brief?Ethernet?1/0
*down:?administratively?down
(s):?spoofing
Interface?Physical?Protocol?IP?Address
Ethernet1/0?up?up?1.1.1.1
(3)?檢查物理連接是否通暢
在?PC?上手工配置IP?地址1.1.1.2，可以ping?通DHCP?服務器的IP?地址1.1.1.2。
(4)?通過調試信息進行定位
在用戶視圖下打開?DHCP?服務器的調試信息開關debugging?dhcp?server?all。
DHCP?服務器上打印如下調試信息：
?debugging?dhcp?server?all
*May?27?13:02:19:494?2007?server?DHCPS/7/DHCPS_DEBUG_COMMON:
DHCPServer:?Receive?DHCPDISCOVER?from?00e0-e100-0201.
*May?27?13:02:19:494?2007?server?DHCPS/7/DHCPS_DEBUG_PACKET:
Rx,?interface?Ethernet1/0
Message?type:?request
Hardware?type:?1,?Hardware?address?length:?6
Hops:?0,?Transaction?ID:?16777216
Seconds:?0,?Broadcast?flag:?0
Client?IP?address:?0.0.0.0?Your?IP?address:?0.0.0.0
Server?IP?address:?0.0.0.0?Relay?agent?IP?address:?0.0.0.0
Client?hardware?address:?00e0-e100-0201
Server?host?naame:?Not?Configured,?Boot?file?name:?Not?Configured
DHCP?message?type:?DHCP?Discover
*
*May?27?13:02:19:494?2007?server?DHCPS/7/DHCPS_DEBUG_COMMON:
DHCPServer:?Assign?Free?Lease?from?global?pool.
……
*May?27?13:02:20:110?2007?server?DHCPS/7/DHCPS_DEBUG_PACKET:
Tx,?interface?Ethernet1/0
Message?type:?reply
Hardware?type:?1,?Hardware?address?length:?6
Hops:?0,?Transaction?ID:?16777216
Seconds:?0,?Broadcast?flag:?0
Client?IP?address:?0.0.0.0?Your?IP?address:?1.1.0.2
Server?IP?address:?0.0.0.0?Relay?agent?IP?address:?0.0.0.0
Client?hardware?address:?00e0-e100-0201
Server?host?naame:?Not?Configured,?Boot?file?name:?Not?Configured
DHCP?message?type:?DHCP?Offer
*May?27?13:02:20:110?2007?server?DHCPS/7/DHCPS_DEBUG_COMMON:
DhcpServer:?Failed?to?send?DHCPOFFER?to?MAC=>?00e0-e100-0201?.
*May?27?13:02:20:110?2007?server?DHCPS/7/DHCPS_DEBUG_COMMON:
DHCPServer:?Sending?DHCPOFFER?failed!
……
*May?27?13:09:54:228?2007?server?DHCPS/7/DHCPS_DEBUG_COMMON:
DHCPServer:?Receive?DHCPDISCOVER?from?00e0-e100-0201.
*May?27?13:09:54:228?2007?server?DHCPS/7/DHCPS_DEBUG_PACKET:
Rx,?interface?Ethernet1/0
Message?type:?request
Hardware?type:?1,?Hardware?address?length:?6
Hops:?0,?Transaction?ID:?266602672
Seconds:?0,?Broadcast?flag:?1
Client?IP?address:?0.0.0.0?Your?IP?address:?0.0.0.0
Server?IP?address:?0.0.0.0?Relay?agent?IP?address:?0.0.0.0
Client?hardware?address:?00e0-e100-0201
Server?host?naame:?Not?Configured,?Boot?file?name:?Not?Configured
DHCP?message?type:?DHCP?Discover
*May?27?13:09:54:228?2007?server?DHCPS/
*May?27?13:09:54:228?2007?server?DHCPS/7/DHCPS_DEBUG_COMMON:
DHCPServer:?Assign?Free?Lease?from?global?pool.
……
*May?27?13:09:54:816?2007?server?DHCPS/7/DHCPS_DEBUG_PACKET:
Tx,?interface?Ethernet1/0
Message?type:?reply
Hardware?type:?1,?Hardware?address?length:?6
Hops:?0,?Transaction?ID:?266602672
Seconds:?0,?Broadcast?flag:?1
Client?IP?address:?0.0.0.0?Your?IP?address:?1.1.0.2
Server?IP?address:?0.0.0.0?Relay?agent?IP?address:?0.0.0.0
Client?hardware?address:?00e0-e100-0201
Server?host?naame:?Not?Configured,?Boot?file?name:?Not?Configured
DHCP?message?type:?DHCP?Offer
*May?27?13:09:54:816?2007?server?DHCPS/7/DHCPS_DEBUG_COMMON:
DhcpServer:?Send?DHCPOFFER?to?00e0-e100-0201?Offer?IP=>?1.1.0.2.
*May?27?13:09:54:848?2007?server?DHCPS/7/DHCPS_DEBUG_COMMON:
DHCPServer:?Receive?DHCPREQUEST?from?00e0-e100-0201.
*May?27?13:09:54:848?2007?server?DHCPS/7/DHCPS_DEBUG_PACKET:
Rx,?interface?Ethernet1/0
Message?type:?request
Hardware?type:?1,?Hardware?address?length:?6
Hops:?0,?Transaction?ID:?266602672
Seconds:?0,?Broadcast?flag:?1
Client?IP?address:?0.0.0.0?Your?IP?address:?0.0.0.0
Server?IP?address:?0.0.0.0?Relay?agent?IP?address:?0.0.0.0
Client?hardware?address:?0000-5e00-4701
Server?host?naame:?Not?Configured,?Boot?file?name:?Not?Configured
DHCP?message?type:?DHCP?Request
*May?27?13:09:54:848?2007?server?DHCPS/7/DHCPS_DEBUG_COMMON:
DHCPServer:?Acknowledge?the?DHCPREQUEST?message!
*May?27?13:09:54:848?2007?server?DHCPS/7/DHCPS_DEBUG_PACKET:
Tx,?interface?Ethernet1/0
Message?type:?reply
Hardware?type:?1,?Hardware?address?length:?6
Hops:?0,?Transaction?ID:?266602672
Seconds:?0,?Broadcast?flag:?0
Client?IP?address:?0.0.0.0?Your?IP?address:?1.1.0.2
Server?IP?address:?0.0.0.0?Relay?agent?IP?address:?0.0.0.0
Client?hardware?address:?00e0-e100-0201
Server?host?naame:?Not?Configured,?Boot?file?name:?Not?Configured
DHCP?message?type:?DHCP?Ack
*May?27?13:09:54:848?2007?server?DHCPS/7/DHCPS_DEBUG_COMMON:
DhcpServer:?Send?DHCPACK?to?00e0-e100-0201?Offer?IP=>?1.1.0.2.
*May?27?13:09:54:848?2007?server?DHCPS/7/DHCPS_DEBUG_COMMON:
DHCPServer:?Requesting?security?module(s)?to?add?a?security?entry?(1.1.0.4
00e0-e100-0201)?succeeded.
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