Собственно разобрались с проблемой.
При включенном релее свитч не хочет отдавать клиентам ответы на DHCP-запросы у которых выставлен флаг запроса ответом броадкастом.
Исходный запрос ELTEX'а, на который не отвечает свитч:
Код: Выделить всё
TIME: 2016-01-28 17:02:26.448
IP: 0.0.0.0 (a8:f9:4b:3:ca:ee) > 255.255.255.255 (ff:ff:ff:ff:ff:ff)
OP: 1 (BOOTPREQUEST)
HTYPE: 1 (Ethernet)
HLEN: 6
HOPS: 0
XID: 49a949fa
SECS: 762
FLAGS: 7f80
CIADDR: 0.0.0.0
YIADDR: 0.0.0.0
SIADDR: 0.0.0.0
GIADDR: 0.0.0.0
CHADDR: a8:f9:4b:03:ca:ee:00:00:00:00:00:00:00:00:00:00
SNAME: .
FNAME: .
OPTION: 53 ( 1) DHCP message type 1 (DHCPDISCOVER)
OPTION: 61 ( 7) Client-identifier 01:a8:f9:4b:03:ca:ee
OPTION: 57 ( 2) Maximum DHCP message size 576
OPTION: 55 ( 16) Parameter Request List 1 (Subnet mask)
3 (Routers)
6 (DNS server)
12 (Host name)
15 (Domainname)
26 (Interface MTU)
28 (Broadcast address)
33 (Static route)
40 (NIS domain)
41 (NIS servers)
42 (NTP servers)
43 (Vendor specific info)
66 (TFTP server name)
67 (Bootfile name)
121 (Classless Static Route)
120 (SIP Servers DHCP Option)
OPTION: 60 ( 5) Vendor class identifier dlink
OPTION: 12 ( 10) Host name RG-2402G-W
---------------------------------------------------------------------------Правим в этом запросе FLAGS и ответ появляется:
Код: Выделить всё
TIME: 2016-01-28 17:01:58.815
IP: 0.0.0.0 (a8:f9:4b:3:ca:ee) > 255.255.255.255 (ff:ff:ff:ff:ff:ff)
OP: 1 (BOOTPREQUEST)
HTYPE: 1 (Ethernet)
HLEN: 6
HOPS: 0
XID: 49a949fa
SECS: 762
FLAGS: 0
CIADDR: 0.0.0.0
YIADDR: 0.0.0.0
SIADDR: 0.0.0.0
GIADDR: 0.0.0.0
CHADDR: a8:f9:4b:03:ca:ee:00:00:00:00:00:00:00:00:00:00
SNAME: .
FNAME: .
OPTION: 53 ( 1) DHCP message type 1 (DHCPDISCOVER)
OPTION: 61 ( 7) Client-identifier 01:a8:f9:4b:03:ca:ee
OPTION: 57 ( 2) Maximum DHCP message size 576
OPTION: 55 ( 16) Parameter Request List 1 (Subnet mask)
3 (Routers)
6 (DNS server)
12 (Host name)
15 (Domainname)
26 (Interface MTU)
28 (Broadcast address)
33 (Static route)
40 (NIS domain)
41 (NIS servers)
42 (NTP servers)
43 (Vendor specific info)
66 (TFTP server name)
67 (Bootfile name)
121 (Classless Static Route)
120 (SIP Servers DHCP Option)
OPTION: 60 ( 5) Vendor class identifier dlink
OPTION: 12 ( 10) Host name RG-2402G-W
---------------------------------------------------------------------------
TIME: 2016-01-28 17:01:58.815
IP: 10.0.24.26 (e8:cc:18:75:56:42) > 192.168.3.10 (a8:f9:4b:3:ca:ee)
OP: 2 (BOOTPREPLY)
HTYPE: 1 (Ethernet)
HLEN: 6
HOPS: 1
XID: 49a949fa
SECS: 762
FLAGS: 0
CIADDR: 0.0.0.0
YIADDR: 192.168.3.10
SIADDR: 192.168.3.254
GIADDR: 10.0.24.26
CHADDR: a8:f9:4b:03:ca:ee:00:00:00:00:00:00:00:00:00:00
SNAME: .
FNAME: .
OPTION: 53 ( 1) DHCP message type 2 (DHCPOFFER)
OPTION: 54 ( 4) Server identifier 192.168.3.254
OPTION: 1 ( 4) Subnet mask 255.255.255.0
OPTION: 3 ( 4) Routers 192.168.3.1
OPTION: 51 ( 4) IP address leasetime 180 (3m)
OPTION: 58 ( 4) T1 60 (60s)
OPTION: 59 ( 4) T2 120 (2m)
---------------------------------------------------------------------------