Tôi có một hệ thống CentOS 5 chạy DHCP cho một số mạng con. Trong / var / log / message, tôi thấy các tin nhắn DHCPINFORM, DHCPACK và DHCPREQUEST không đổi. Tôi không hiểu tại sao những yêu cầu này thường xuyên hơn ở đây so với các cài đặt khác. Các tin nhắn đến từng đợt một vài giây, dẫn đến các logfile cực lớn.
Phần lớn các thiết bị ở đây là các thiết bị cầm tay không dây (sử dụng ngăn xếp Windows CE TCP). Tôi đánh giá cao bất kỳ cái nhìn sâu sắc nào trong việc dập tắt các tin nhắn liên tục.
/etc/dhcpd.conf
default-lease-time 28800;
authoritative;
allow bootp;
ddns-update-style none;
option subnet-mask 255.255.255.0;
option domain-name-servers 10.1.1.3;
option domain-name "xxxinc.com";
option tftp-server-name "10.1.1.3";
option ntp-servers 17.151.16.21;
subnet 10.1.1.0 netmask 255.255.255.0 {
range dynamic-bootp 10.1.1.120 10.1.1.211;
option tftp-server-name "10.1.1.3";
next-server 10.1.1.3;
filename "/dsl/pxelinux.0";
option routers 10.1.1.1;
}
subnet 10.1.2.0 netmask 255.255.255.0 {
range dynamic-bootp 10.1.2.130 10.1.2.199;
option tftp-server-name "10.1.1.3";
next-server 10.1.1.3;
filename "/dsl/pxelinux.0";
option routers 10.1.2.1;
}
/ var / log / tin nhắn
Apr 4 10:59:44 General dhcpd: DHCPINFORM from 10.1.1.136 via eth0
Apr 4 10:59:44 General dhcpd: DHCPACK to 10.1.1.136 (00:16:35:07:1e:61) via eth0
Apr 4 10:59:44 General dhcpd: DHCPINFORM from 10.1.1.136 via eth0
Apr 4 10:59:44 General dhcpd: DHCPACK to 10.1.1.136 (00:16:35:07:1e:61) via eth0
Apr 4 10:59:44 General dhcpd: DHCPINFORM from 10.1.1.136 via 10.1.1.254
Apr 4 10:59:44 General dhcpd: DHCPACK to 10.1.1.136 (00:16:35:07:1e:61) via eth0
Apr 4 10:59:44 General dhcpd: DHCPINFORM from 10.1.1.136 via 10.1.1.254
Apr 4 10:59:44 General dhcpd: DHCPACK to 10.1.1.136 (00:16:35:07:1e:61) via eth0
Apr 4 10:59:44 General dhcpd: DHCPINFORM from 10.1.1.136 via 10.1.1.2
Apr 4 10:59:44 General dhcpd: DHCPACK to 10.1.1.136 (00:16:35:07:1e:61) via eth0
Apr 4 10:59:46 General dhcpd: DHCPREQUEST for 10.1.1.137 from 00:15:70:85:9b:ea via eth0
Apr 4 10:59:46 General dhcpd: DHCPACK on 10.1.1.137 to 00:15:70:85:9b:ea via eth0
Apr 4 10:59:46 General dhcpd: DHCPREQUEST for 10.1.1.137 from 00:15:70:85:9b:ea via eth0
Apr 4 10:59:46 General dhcpd: DHCPACK on 10.1.1.137 to 00:15:70:85:9b:ea via eth0
Apr 4 10:59:46 General dhcpd: DHCPREQUEST for 10.1.1.137 from 00:15:70:85:9b:ea via 10.1.1.254
Apr 4 10:59:46 General dhcpd: DHCPACK on 10.1.1.137 to 00:15:70:85:9b:ea via 10.1.1.254
Apr 4 10:59:46 General dhcpd: DHCPREQUEST for 10.1.1.137 from 00:15:70:85:9b:ea via 10.1.1.254
Apr 4 10:59:46 General dhcpd: DHCPACK on 10.1.1.137 to 00:15:70:85:9b:ea via 10.1.1.254
Apr 4 10:59:46 General dhcpd: DHCPREQUEST for 10.1.1.137 from 00:15:70:85:9b:ea via 10.1.1.2
Apr 4 10:59:46 General dhcpd: DHCPACK on 10.1.1.137 to 00:15:70:85:9b:ea via 10.1.1.2
Apr 4 10:59:47 General dhcpd: DHCPINFORM from 10.1.2.193 via 10.1.2.1
Apr 4 10:59:47 General dhcpd: DHCPACK to 10.1.2.193 (00:1a:4b:c0:e0:a4) via eth0
Apr 4 10:59:47 General dhcpd: DHCPINFORM from 10.1.1.147 via eth0
Apr 4 10:59:47 General dhcpd: DHCPACK to 10.1.1.147 (00:19:bb:d3:bc:e8) via eth0
Apr 4 10:59:47 General dhcpd: DHCPINFORM from 10.1.1.147 via eth0
Apr 4 10:59:47 General dhcpd: DHCPACK to 10.1.1.147 (00:19:bb:d3:bc:e8) via eth0
Apr 4 10:59:47 General dhcpd: DHCPINFORM from 10.1.1.147 via 10.1.1.254
Apr 4 10:59:47 General dhcpd: DHCPACK to 10.1.1.147 (00:19:bb:d3:bc:e8) via eth0
Apr 4 10:59:47 General dhcpd: DHCPINFORM from 10.1.1.147 via 10.1.1.254
Apr 4 10:59:47 General dhcpd: DHCPACK to 10.1.1.147 (00:19:bb:d3:bc:e8) via eth0
Apr 4 10:59:47 General dhcpd: DHCPINFORM from 10.1.1.147 via 10.1.1.2
Apr 4 10:59:47 General dhcpd: DHCPACK to 10.1.1.147 (00:19:bb:d3:bc:e8) via eth0
Apr 4 10:59:49 General dhcpd: DHCPREQUEST for 10.1.1.198 from 00:15:70:86:dc:b9 via eth0
Apr 4 10:59:49 General dhcpd: DHCPACK on 10.1.1.198 to 00:15:70:86:dc:b9 via eth0
Apr 4 10:59:49 General dhcpd: DHCPREQUEST for 10.1.1.198 from 00:15:70:86:dc:b9 via eth0
Apr 4 10:59:49 General dhcpd: DHCPACK on 10.1.1.198 to 00:15:70:86:dc:b9 via eth0
Apr 4 10:59:49 General dhcpd: DHCPREQUEST for 10.1.1.198 from 00:15:70:86:dc:b9 via 10.1.1.254
Apr 4 10:59:49 General dhcpd: DHCPACK on 10.1.1.198 to 00:15:70:86:dc:b9 via 10.1.1.254
Apr 4 10:59:49 General dhcpd: DHCPREQUEST for 10.1.1.198 from 00:15:70:86:dc:b9 via 10.1.1.254
Apr 4 10:59:49 General dhcpd: DHCPACK on 10.1.1.198 to 00:15:70:86:dc:b9 via 10.1.1.254
Apr 4 10:59:49 General dhcpd: DHCPREQUEST for 10.1.1.198 from 00:15:70:86:dc:b9 via 10.1.1.2
Apr 4 10:59:49 General dhcpd: DHCPACK on 10.1.1.198 to 00:15:70:86:dc:b9 via 10.1.1.2
CẬP NHẬT
Tôi đã xóa một số ip helper-address
mục không liên quan khỏi một số bộ định tuyến phía máy chủ DHCP. Phần lớn lưu lượng đã giảm, tuy nhiên tôi vẫn nhận được rất nhiều DHCPINFORM, DHCPACK ...
Oct 26 17:22:23 General dhcpd: DHCPINFORM from 10.1.1.140 via eth0
Oct 26 17:22:23 General dhcpd: DHCPACK to 10.1.1.140 (00:16:35:07:1e:2c) via eth0
Oct 26 17:22:27 General dhcpd: DHCPINFORM from 10.1.1.147 via eth0
Oct 26 17:22:27 General dhcpd: DHCPACK to 10.1.1.147 (00:19:bb:d3:bc:e8) via eth0
Oct 26 17:22:27 General dhcpd: DHCPINFORM from 10.1.1.140 via eth0
Oct 26 17:22:27 General dhcpd: DHCPACK to 10.1.1.140 (00:16:35:07:1e:2c) via eth0
Oct 26 17:22:39 General dhcpd: DHCPINFORM from 10.1.1.182 via eth0
Oct 26 17:22:39 General dhcpd: DHCPACK to 10.1.1.182 (00:19:bb:d3:ec:f1) via eth0
Oct 26 17:22:43 General dhcpd: DHCPINFORM from 10.1.1.182 via eth0
Oct 26 17:22:43 General dhcpd: DHCPACK to 10.1.1.182 (00:19:bb:d3:ec:f1) via eth0
Oct 26 17:22:49 General dhcpd: DHCPINFORM from 10.1.2.198 via 10.1.2.1
Oct 26 17:22:49 General dhcpd: DHCPACK to 10.1.2.198 (00:1e:0b:79:e5:15) via eth0
Oct 26 17:23:01 General dhcpd: DHCPINFORM from 10.1.1.194 via eth0
Oct 26 17:23:01 General dhcpd: DHCPACK to 10.1.1.194 (00:1e:0b:7b:2d:d6) via eth0
Oct 26 17:23:04 General dhcpd: DHCPINFORM from 10.1.1.136 via eth0
Oct 26 17:23:04 General dhcpd: DHCPACK to 10.1.1.136 (00:16:35:07:1e:61) via eth0
Oct 26 17:23:07 General dhcpd: DHCPINFORM from 10.1.1.136 via eth0
Oct 26 17:23:07 General dhcpd: DHCPACK to 10.1.1.136 (00:16:35:07:1e:61) via eth0
Oct 26 17:23:09 General dhcpd: DHCPINFORM from 10.1.2.193 via 10.1.2.1
Oct 26 17:23:09 General dhcpd: DHCPACK to 10.1.2.193 (00:1a:4b:c0:e0:a4) via eth0
Oct 26 17:23:12 General dhcpd: DHCPINFORM from 10.1.2.179 via 10.1.2.1
Oct 26 17:23:12 General dhcpd: DHCPACK to 10.1.2.179 (00:19:bb:d3:f6:26) via eth0
Oct 26 17:23:13 General dhcpd: DHCPINFORM from 10.1.2.193 via 10.1.2.1
Oct 26 17:23:13 General dhcpd: DHCPACK to 10.1.2.193 (00:1a:4b:c0:e0:a4) via eth0
Oct 26 17:23:15 General dhcpd: DHCPINFORM from 10.1.2.179 via 10.1.2.1
Oct 26 17:23:15 General dhcpd: DHCPACK to 10.1.2.179 (00:19:bb:d3:f6:26) via eth0
Oct 26 17:23:36 General dhcpd: DHCPINFORM from 10.1.1.140 via eth0
Oct 26 17:23:36 General dhcpd: DHCPACK to 10.1.1.140 (00:16:35:07:1e:2c) via eth0
Oct 26 17:23:37 General dhcpd: DHCPINFORM from 10.1.1.147 via eth0
Oct 26 17:23:37 General dhcpd: DHCPACK to 10.1.1.147 (00:19:bb:d3:bc:e8) via eth0
Oct 26 17:23:40 General dhcpd: DHCPINFORM from 10.1.1.140 via eth0
Oct 26 17:23:40 General dhcpd: DHCPACK to 10.1.1.140 (00:16:35:07:1e:2c) via eth0
Oct 26 17:23:41 General dhcpd: DHCPINFORM from 10.1.1.147 via eth0
Oct 26 17:23:41 General dhcpd: DHCPACK to 10.1.1.147 (00:19:bb:d3:bc:e8) via eth0
Oct 26 17:23:50 General dhcpd: DHCPINFORM from 10.1.2.198 via 10.1.2.1
Oct 26 17:23:50 General dhcpd: DHCPACK to 10.1.2.198 (00:1e:0b:79:e5:15) via eth0
Oct 26 17:23:51 General dhcpd: DHCPINFORM from 10.1.1.182 via eth0
Oct 26 17:23:51 General dhcpd: DHCPACK to 10.1.1.182 (00:19:bb:d3:ec:f1) via eth0