dhcp超級(jí)作用域多網(wǎng)段問(wèn)題，不能獲著相應(yīng)網(wǎng)段的IP

hh106

二層交換接到三層交換不同的vlan端口,dhcp服務(wù)器在vlan40中
怎么讓電腦pc1,pc2,pc3獲著對(duì)應(yīng)vlan段的正確IP?

1 dhcp服務(wù)器已經(jīng)啟用了超級(jí)作用域,dhcpd.conf配置如下:
[root@dhcpserver ~]# cat /etc/dhcpd.conf
ddns-update-style interim;
ignore client-updates;
option subnet-mask 255.255.255.0;
shared-network mynet{
subnet 192.168.40.0 netmask 255.255.255.0 {
        range dynamic-bootp             192.168.40.100 192.168.40.200;
        option routers                  192.168.40.1;
}
subnet 192.168.10.0 netmask 255.255.255.0 {
        range dynamic-bootp             192.168.10.100 192.168.10.200;
        option routers                  192.168.10.1;
}
subnet 192.168.20.0 netmask 255.255.255.0 {
        range dynamic-bootp             192.168.20.100 192.168.20.200;
        option routers                  192.168.20.1;
}
subnet 192.168.30.0 netmask 255.255.255.0 {
        range dynamic-bootp             192.168.30.100 192.168.30.200;
        option routers                  192.168.30.1;
}
}

2 三層交換機(jī)已經(jīng)啟用了dhcp-relay
192.168.10.1為vlan10的IP
192.168.20.1為vlan20的IP
192.168.30.1為vlan30的IP
192.168.40.1為vlan40的IP

3 dhcp日志如下
[root@dhcpserver ~]# tail -f /var/log/messages
Jun 23 20:29:18 server dhcpd: DHCPOFFER on 192.168.30.199 to 00:0c:29:f2:bb:95 via 192.168.10.1
Jun 23 20:37:36 server dhcpd: DHCPDISCOVER from 00:0c:29:f2:bb:95 via 192.168.10.1
Jun 23 20:37:37 server dhcpd: DHCPOFFER on 192.168.30.199 to 00:0c:29:f2:bb:95 via 192.168.10.1
Jun 23 20:37:47 server dhcpd: DHCPDISCOVER from 00:0c:29:f2:bb:95 via 192.168.10.1
Jun 23 20:37:47 server dhcpd: DHCPOFFER on 192.168.30.199 to 00:0c:29:f2:bb:95 via 192.168.10.1
Jun 23 20:37:49 server clamd[6112]: SelfCheck: Database status OK.
Jun 23 20:38:08 server dhcpd: DHCPDISCOVER from 00:0c:29:f2:bb:95 via 192.168.10.1
Jun 23 20:38:08 server dhcpd: DHCPOFFER on 192.168.30.199 to 00:0c:29:f2:bb:95 via 192.168.10.1
Jun 23 20:38:44 server dhcpd: DHCPDISCOVER from 00:0c:29:f2:bb:95 via 192.168.10.1
Jun 23 20:38:44 server dhcpd: DHCPOFFER on 192.168.30.199 to 00:0c:29:f2:bb:95 via 192.168.10.1

現(xiàn)在的問(wèn)題是vlan10網(wǎng)段里的電腦pc1沒(méi)有取得正確的IP。

網(wǎng)絡(luò)圖如下:

dreamhunter

如果交換機(jī)啟用dhcp-relay的話，應(yīng)該用普通作用域，不用使用超級(jí)作用域。
超級(jí)作用域應(yīng)用于dhcp服務(wù)器同時(shí)接入多個(gè)網(wǎng)段的情況下。

ssffzz1

如果下面的PC配置靜態(tài)IP和DHCP服務(wù)器能通訊嗎？

100心

ty 2樓，縮小試下。

HH106

回復(fù) 3# ssffzz1


1  pc1如果手動(dòng)指定192.168.10.2/24的IP可以與dhcp通訊
2  就是如果pc1使用從dhcp獲取IP的話，不能取得192.168.10.x網(wǎng)段的IP，即不在vlan1的IP網(wǎng)段中
而是取得的192.168.30.x網(wǎng)段的IP.

HH106

回復(fù) 2# dreamhunter


謝謝你，按照你說(shuō)的，去掉了超級(jí)作用域，測(cè)試成功