关于Linux DHCP 多作用域问题

askos

我在vmware8里面装了一台CentOS 5.5，WinXP_1和WinXP_2.

Cent OS 中设置了三张网卡，分三个网段：10.10.10.1/24 (Vmnet2) ,
                                                       10.10.11.1/24 (Vmnet3),
                                                       192.168.137.1/24 (Brided) ,方便在windows 7 中使用SecureCRT
搭建了DHCP服务,以10.10.10.1、24和10.10.11.1/24配置了多作用域。服务启动成功，WinXP_1得到10.10.10.99，WinXP_2得到10.10.11.100。
但是WinXP_1与WinXP_2之间不能Ping 通，linux主机Ping 不通WinXP_1和WinXP_2，但是两台客户机能ping通主机。

DHCP配置文件如下：

1. 
   
2. ddns-update-style interim;
   
3. ignore client-updates;
   
4. option domain-name      "test.com";
   
5. 
   
6. subnet 10.10.10.0 netmask 255.255.255.0 {
   
7. 
   
8. 
   
9.         option routers                  10.10.10.1;
   
10.         option subnet-mask              255.255.255.0;
    
11. 
    
12.         range dynamic-bootp 10.10.10.10 10.10.10.100;
    
13.         default-lease-time 21600;
    
14.         max-lease-time 43200;
    
15. 
    
16.         }
    
17. 
    
18. 
    
19. 
    
20. subnet 10.10.11.0 netmask 255.255.255.0 {
    
21. 
    
22. 
    
23.         option routers                  10.10.11.1;
    
24.         option subnet-mask              255.255.255.0;
    
25. 
    
26. 
    
27.         range dynamic-bootp 10.10.11.4 10.10.11.100;
    
28.         default-lease-time 21600;
    
29.         max-lease-time 43200;
    
30. 
    
31.         }
    

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sysctl.conf也配置了：

1. [root@CentOS ~]#sysctl -p
   
2. net.ipv4.ip_forward = 1
   
3. net.ipv4.conf.default.rp_filter = 1
   
4. net.ipv4.conf.default.accept_source_route = 0
   
5. kernel.sysrq = 0
   
6. kernel.core_uses_pid = 1
   
7. net.ipv4.tcp_syncookies = 1
   
8. kernel.msgmnb = 65536
   
9. kernel.msgmax = 65536
   
10. kernel.shmmax = 4294967295
    
11. kernel.shmall = 268435456
    
12. [root@CentOS ~]#

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执行dhcpd的结果：

1. [root@CentOS ~]#dhcpd
   
2. Internet Systems Consortium DHCP Server V3.0.5-RedHat
   
3. Copyright 2004-2006 Internet Systems Consortium.
   
4. All rights reserved.
   
5. For info, please visit http://www.isc.org/sw/dhcp/
   
6. Wrote 6 leases to leases file.
   
7. 
   
8. No subnet declaration for eth2 (192.168.137.3).
   
9. ** Ignoring requests on eth2.  If this is not what
   
10.    you want, please write a subnet declaration
    
11.    in your dhcpd.conf file for the network segment
    
12.    to which interface eth2 is attached. **
    
13. 
    
14. Listening on LPF/eth0/00:0c:29:0f:67:7a/10.10.10/24
    
15. Sending on   LPF/eth0/00:0c:29:0f:67:7a/10.10.10/24
    
16. Listening on LPF/eth1/00:0c:29:0f:67:84/10.10.11/24
    
17. Sending on   LPF/eth1/00:0c:29:0f:67:84/10.10.11/24
    
18. Sending on   Socket/fallback/fallback-net
    
19. [root@CentOS ~]#There's already a DHCP server running.
    
20. 
    
21. If you did not get this software from ftp.isc.org, please
    
22. get the latest from ftp.isc.org and install that before
    
23. requesting help.
    
24. 
    
25. If you did get this software from ftp.isc.org and have not
    
26. yet read the README, please read it before requesting help.
    
27. If you intend to request help from the dhcp-server@isc.org
    
28. mailing list, please read the section on the README about
    
29. submitting bug reports and requests for help.
    
30. 
    
31. Please do not under any circumstances send requests for
    
32. help directly to the authors of this software - please
    
33. send them to the appropriate mailing list as described in
    
34. the README file.
    
35. 
    
36. exiting.
    

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请各位大哥大姐帮忙看看这是怎么回事？哪里出错了？

chenyx

linuxping不通Xp,可能是客户端禁止ping了
Xp之间ping不通,检查下linux是否开启ip转发了

askos

回复 2# chenyx


    谢谢。已经解决了，是XP防火墙打开了。