柳志翔,终端接入无线后无法获取IP地址
组网及说明
AC旁挂核心，核心下联POE接入交换机，POE交换机连接AP
告警信息
终端连接后无法获取IP地址
问题描述
终端连接后无法获取IP地址
过程分析
AP 可以获取地址，终端无法获取地址，在 DHCP服务器设备上 debug查看
< SW>*Mar 12 22:07:27:153 2013 SW DHCPS/7/PACKET:
From 0.0.0.0 port 68, interface Vlan-interface10
Message type: REQUEST (1)
Hardware type: 1, Hardware address length: 6
Hops: 0, Transaction ID: 3530740923
Seconds: 60, 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: 5207-7a64- XXXX
Server host name: not configured
Boot file name: not configured
DHCP message type: DHCPDISCOVER (1)
*Mar 12 22:07:27:156 2013 SW DHCPS/7/PACKET:
To 192.168.244.3 port 68, interface Vlan-interface10
Message type: REPLY (2)
Hardware type: 1, Hardware address length: 6
Hops: 0, Transaction ID: 3530740923
Seconds: 60, Broadcast flag: 0
Client IP address: 0.0.0.0 Your IP address: 192.168.244.3
Server IP address: 0.0.0.0 Relay agent IP address: 0.0.0.0
Client hardware address: 5207-7a64- XXXX
Server host name: not configured
Boot file name: not configured
DHCP message type: DHCPOFFER (2)
*Mar 12 22:07:29:202 2013 SW DHCPS/7/PACKET:
From 0.0.0.0 port 68, interface Vlan-interface10
Message type: REQUEST (1)
Hardware type: 1, Hardware address length: 6
Hops: 0, Transaction ID: 3530740925
Seconds: 1, 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: 5207-7a64- XXXX
Server host name: not configured
Boot file name: not configured
DHCP message type: DHCPREQUEST (3)
*Mar 12 22:07:29:205 2013 SW DHCPS/7/PACKET:
To 192.168.244.3 port 68, interface Vlan-interface10
Message type: REPLY (2)
Hardware type: 1, Hardware address length: 6
Hops: 0, Transaction ID: 3530740925
Seconds: 1, Broadcast flag: 0
Client IP address: 0.0.0.0 Your IP address: 192.168.244.3
Server IP address: 0.0.0.0 Relay agent IP address: 0.0.0.0
Client hardware address: 5207-7a64- XXXX
Server host name: not configured
Boot file name: not configured
DHCP message type: DHCPACK (5)
dhcp 交互没有问题，但是终端还是无法获取到地址，在终端抓包查看是否收到 DHCP server的 offer
发现终端一直没有收到 offer报文，查看 AC中下发的 map文件和 AP下发的配置发现：
System-view
vlan 10
vlan 100
interface gigabitethernet1/0/1
port link-type trunk
port trunk permit vlan 10 100
interface gigabitethernet1/0/2
port link-type trunk
port trunk permit vlan 10 100
查看AP的诊断发现UP的接口为SGE接口，下发的map文件配置为GE接口的配置。
===============display interface brief===============
Brief information on interfaces in route mode:
Link: ADM - administratively down; Stby - standby
Protocol: (s) - spoofing
Interface Link Protocol Primary IP Description
InLoop0 UP UP(s) --
NULL0 UP UP(s) --
Vlan1 UP UP 192.168.246.28
Brief information on interfaces in bridge mode:
Link: ADM - administratively down; Stby - standby
Speed: (a) - auto
Duplex: (a)/A - auto; H - half; F - full
Type: A - access; T - trunk; H - hybrid
Interface Link Speed Duplex Type PVID Description
GE1/0/1 DOWN auto A T 1
SGE1/0/1 UP 1G(a) F(a) A 1
Wa6530的SGE接口为POE供电接口。
解决方法
修改map文件，下发正确的SGE接口的配置。
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