请教一个关于dhcp的问题

chendang

各位,我在redhat上装dhcp,运行完出现
"No subnet declaration for eth0 (10.46.6.226).
Please write a subnet declaration in your dhcpd.conf file for the
network segment to which interface eth0 is attached.
exiting."
请问何解?还有,我不知道/etc/dhcpd.conf中的subnet是什么意思,要添什么?
我这个网络的网段是10.46.6.225~10.46.6.253,其中225是交换机.网关是10.46.6.254.


另附上我的/etc/dhcpd.conf.
subnet 10.46.6.254  netmask 255.255.255.224 {
# --- default gateway
        option routers                  10.46.6.254;
        option subnet-mask              255.255.255.224;

        option nis-domain               "domain.org";
        option domain-name              "domain.org";
        option domain-name-servers      10.46.6.226;

        option time-offset              -18000; # Eastern Standard Time
#       option ntp-servers              192.168.1.1;
#       option netbios-name-servers     192.168.1.1;
# --- Selects point-to-point node (default is hybrid). Don't change this unless
# -- you understand Netbios very well
#       option netbios-node-type 2;

        range dynamic-bootp 10.46.6.227 10.46.6.41;
        default-lease-time 21600;
        max-lease-time 43200;

        # we want the nameserver to appear at a fixed address
#       host ns {
#               next-server marvin.redhat.com;
#               hardware ethernet 12:34:56:78:AB:CD;
#               fixed-address 207.175.42.254;

peter333

your dhcp for what? You, I think, should have something like this:
...
shared-network LOCAL-NET {
        option  domain-name "my.domain";
        option  domain-name-servers xxx.xxx.xxx.xxx;

        subnet 192.168.1.0 netmask 255.255.255.0 {
                option routers 192.168.1.1;

                range 192.168.1.32 192.168.1.127;
        }
}
...

chendang

就是搞一个小的培训教室，而且我的ip网段已经写出来了。不是192的

peter333

[quote]原帖由 "chendang"]就是搞一个小的培训教室，而且我的ip网段已经写出来了。不是192的[/quote 发表：
  
If you setup dhcp for training class, it is correct. You sould have a subnet because you only have a router is connected to the internet directly.You can decide your internal IP for your subnet, such as 192.168.1.x. So, your machines on the subnet can go to internet through the router.I give you my dhcpd.con just as an example. It is on Openbsd, but it sould have  the same idea. OK? Can you read me?

#       $OpenBSD: dhcpd.conf,v 1.1 1998/08/19 04:25:45 form Exp $
#
# DHCP server options.
# See dhcpd.conf(5) and dhcpd( for more information.
#

# Network:              192.168.1.0/255.255.255.0
# Domain name:          my.domain
# Name servers:         192.168.1.3 and 192.168.1.5
# Default router:       192.168.1.1
# Addresses:            192.168.1.32 - 192.168.1.127
#
shared-network LOCAL-NET {
        option  domain-name "my.domain";
        option  domain-name-servers xxx.xxx.xxx.xxx;

        subnet 192.168.1.0 netmask 255.255.255.0 {
                option routers 192.168.1.1;

                range 192.168.1.32 192.168.1.127;
        }
}

chendang

哦，我明白了，谢了