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电梯直达

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发表于 2007-04-01 13:10 |只看该作者 |倒序浏览

一台锐捷3550-24GE三层交换机
划了三个VLAN
VLAN1的IP为：192.168.1.111/24
VLAN2的IP为：192.168.20.1/24
VLAN3的IP为：192.168.30.1/24
现在想用DHCP来分配各子网所对应的IP地址。
下面是三层的配置文件：

Switch#sh run

System software version : 2.41(2)Build Oct 24 2005 Release

Building configuration...
Current configuration : 1304 bytes

!
version 1.0
!
hostname Switch
vlan 1
!
vlan 2
!
vlan 3
!
service dhcp    -----------------------打开DHCP RELAY
ip helper-address 192.168.1.214 -------------打开DHCP RELAY
interface FastEthernet 0/1
switchport access vlan 2
!
interface FastEthernet 0/2
switchport access vlan 2
!
interface FastEthernet 0/3
switchport access vlan 2
!
interface FastEthernet 0/4
switchport access vlan 2
!
interface FastEthernet 0/5
switchport access vlan 2
!
interface FastEthernet 0/6
switchport access vlan 2
!
interface FastEthernet 0/7
switchport access vlan 2
!
interface FastEthernet 0/8
switchport access vlan 2
!
interface FastEthernet 0/9
switchport access vlan 3
!
interface FastEthernet 0/10
switchport access vlan 3
!
interface FastEthernet 0/11
switchport access vlan 3
!
interface FastEthernet 0/12
switchport access vlan 3
!
interface FastEthernet 0/13
switchport access vlan 3
!
interface FastEthernet 0/14
switchport access vlan 3
!
interface FastEthernet 0/15
switchport access vlan 3
!
interface FastEthernet 0/16
switchport access vlan 3
!
interface Vlan 1
ip address 192.168.1.111 255.255.255.0
!
interface Vlan 2
ip address 192.168.20.1 255.255.255.0
!
interface Vlan 3
ip address 192.168.30.1 255.255.255.0
!
ip route 0.0.0.0 0.0.0.0 Vlan 1 192.168.1.1 1 enabled
end

Switch#

一台LINUX做的DHCP服务器。单网卡eth0:192.168.1.214/24
/etc/dhcpd.conf的内容如下：

ddns-update-style interim;
ignore client-updates;
option nis-domain "domain.org";
option domain-name "domain.org";
option domain-name-servers 202.102.15.162;
option time-offset -18000;
default-lease-time 21600;
max-lease-time 43200;

subnet 192.168.1.0 netmask 255.255.255.0 {
option routers 192.168.1.1;
range dynamic-bootp 192.168.1.2 192.168.1.200;
}

subnet 192.168.20.0 netmask 255.255.255.0 {
#server-identifier 192.168.20.1;
option routers 192.168.20.1;
option broadcast-address 192.168.20.255;
range dynamic-bootp 192.168.20.2 192.168.20.200;
}

把DHCP的网线接到三层的E0/24
把测试机器接到VLAN1的任何端口都可以从DHCP服务器获取到地址。

问题：把测试机器接到VLAN2的相关端口。不能从DHCP服务器获取地址。
下面是DHCP的日志。不知道是什么原因？？？？
Apr  1 12:45:49 firewall dhcpd: DHCPDISCOVER from 00:e0:4c:a0:51:7f (ss-bceee732262b) via 192.168.20.1
Apr  1 12:45:49 firewall dhcpd: DHCPOFFER on 192.168.20.200 to 00:e0:4c:a0:51:7f (ss-bceee732262b) via 192.168.20.1
Apr  1 12:51:40 firewall dhcpd: DHCPDISCOVER from 00:e0:4c:a0:51:7f (ss-bceee732262b) via 192.168.20.1
Apr  1 12:51:41 firewall dhcpd: DHCPOFFER on 192.168.20.200 to 00:e0:4c:a0:51:7f (ss-bceee732262b) via 192.168.20.1
Apr  1 12:51:44 firewall dhcpd: DHCPDISCOVER from 00:e0:4c:a0:51:7f (ss-bceee732262b) via 192.168.20.1
Apr  1 12:51:44 firewall dhcpd: DHCPOFFER on 192.168.20.200 to 00:e0:4c:a0:51:7f (ss-bceee732262b) via 192.168.20.1
Apr  1 12:51:52 firewall dhcpd: DHCPDISCOVER from 00:e0:4c:a0:51:7f (ss-bceee732262b) via 192.168.20.1
Apr  1 12:51:52 firewall dhcpd: DHCPOFFER on 192.168.20.200 to 00:e0:4c:a0:51:7f (ss-bceee732262b) via 192.168.20.1
Apr  1 12:52:09 firewall dhcpd: DHCPDISCOVER from 00:e0:4c:a0:51:7f (ss-bceee732262b) via 192.168.20.1
Apr  1 12:52:09 firewall dhcpd: DHCPOFFER on 192.168.20.200 to 00:e0:4c:a0:51:7f (ss-bceee732262b) via 192.168.20.1

？？？
请各位帮忙看一下！谢谢！！！