D-LINK DHCP Relay option 82: различия между версиями

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==Настройки коммутатора==
  
==Настройки коммутатора==
 
==DHCP - пакет (детально)==
  
==DHCP - пакет (детально)==
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<PRE>
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tshark -V ...
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Frame 19 (366 bytes on wire, 366 bytes captured)
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Arrival Time: Mar 9, 2009 15:24:42.257042000
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[Time delta from previous captured frame: 15.000093000 seconds]
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[Time delta from previous displayed frame: 15.000093000 seconds]
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[Time since reference or first frame: 780.215513000 seconds]
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Frame Number: 19
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Frame Length: 366 bytes
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Capture Length: 366 bytes
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[Frame is marked: False]
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[Protocols in frame: eth:ip:udp:bootp]
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Ethernet II, Src: D-Link_17:c6:28 (00:1c:f0:17:c6:28), Dst: IntelCor_06:8b:c7 (00:1c:c0:06:8b:c7)
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Destination: IntelCor_06:8b:c7 (00:1c:c0:06:8b:c7)
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Address: IntelCor_06:8b:c7 (00:1c:c0:06:8b:c7)
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.... ...0 .... .... .... .... = IG bit: Individual address (unicast)
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.... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
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Source: D-Link_17:c6:28 (00:1c:f0:17:c6:28)
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Address: D-Link_17:c6:28 (00:1c:f0:17:c6:28)
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.... ...0 .... .... .... .... = IG bit: Individual address (unicast)
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.... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
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Type: IP (0x0800)
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Internet Protocol, Src: 172.29.14.122 (172.29.14.122), Dst: 172.29.14.1 (172.29.14.1)
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Version: 4
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Header length: 20 bytes
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Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
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0000 00.. = Differentiated Services Codepoint: Default (0x00)
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.... ..0. = ECN-Capable Transport (ECT): 0
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.... ...0 = ECN-CE: 0
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Total Length: 352
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Identification: 0x00c6 (198)
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Flags: 0x00
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0... = Reserved bit: Not set
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.0.. = Don't fragment: Not set
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..0. = More fragments: Not set
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Fragment offset: 0
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Time to live: 128
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Protocol: UDP (0x11)
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Header checksum: 0xc411 [correct]
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[Good: True]
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[Bad : False]
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Source: 172.29.14.122 (172.29.14.122)
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Destination: 172.29.14.1 (172.29.14.1)
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User Datagram Protocol, Src Port: bootpc (68), Dst Port: bootps (67)
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Source port: bootpc (68)
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Destination port: bootps (67)
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Length: 332
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Checksum: 0x4a5c [correct]
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[Good Checksum: True]
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[Bad Checksum: False]
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Bootstrap Protocol
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Message type: Boot Request (1)
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Hardware type: Ethernet
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Hardware address length: 6
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Hops: 1
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Transaction ID: 0xa9dbdf39
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Seconds elapsed: 28 (little endian bug?)
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Bootp flags: 0x8000 (Broadcast)
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1... .... .... .... = Broadcast flag: Broadcast
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.000 0000 0000 0000 = Reserved flags: 0x0000
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Client IP address: 0.0.0.0 (0.0.0.0)
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Your (client) IP address: 0.0.0.0 (0.0.0.0)
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Next server IP address: 0.0.0.0 (0.0.0.0)
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Relay agent IP address: 172.29.14.122 (172.29.14.122)
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Client MAC address: Dell_95:8d:8b (00:1c:23:95:8d:8b)
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Server host name not given
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Boot file name not given
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Magic cookie: (OK)
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Option: (t=53,l=1) DHCP Message Type = DHCP Discover
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Option: (53) DHCP Message Type
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Length: 1
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Value: 01
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Option: (t=116,l=1) DHCP Auto-Configuration
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Option: (116) DHCP Auto-Configuration
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Length: 1
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Value: 01
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Option: (t=61,l=7) Client identifier
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Option: (61) Client identifier
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Length: 7
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Value: 01001C23958D8B
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Hardware type: Ethernet
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Client MAC address: Dell_95:8d:8b (00:1c:23:95:8d:8b)
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Option: (t=50,l=4) Requested IP Address = 169.254.86.169
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Option: (50) Requested IP Address
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Length: 4
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Value: A9FE56A9
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Option: (t=12,l=6) Host Name = "tester"
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Option: (12) Host Name
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Length: 6
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Value: 746573746572
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Option: (t=60,l=8) Vendor class identifier = "MSFT 5.0"
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Option: (60) Vendor class identifier
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Length: 8
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Value: 4D53465420352E30
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Option: (t=55,l=11) Parameter Request List
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Option: (55) Parameter Request List
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Length: 11
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Value: 010F03062C2E2F1F21F92B
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1 = Subnet Mask
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15 = Domain Name
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3 = Router
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6 = Domain Name Server
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44 = NetBIOS over TCP/IP Name Server
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46 = NetBIOS over TCP/IP Node Type
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47 = NetBIOS over TCP/IP Scope
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31 = Perform Router Discover
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33 = Static Route
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249 = Classless Static Route (Microsoft)
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43 = Vendor-Specific Information
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Option: (t=43,l=2) Vendor-Specific Information
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Option: (43) Vendor-Specific Information
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Length: 2
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Value: DC00
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Option: (t=82,l=25) Agent Information Option
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Option: (82) Agent Information Option
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Length: 25
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Value: 0106000408BC0001020F010D3137322E32392E31342E3132...
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Agent Circuit ID: 000408BC0001
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Agent Remote ID: 010D3137322E32392E31342E313232
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End Option
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</PRE>

Версия 16:29, 9 марта 2009

Настройка коммутатора Д-линк

Настройки коммутатора

DHCP - пакет (детально)

tshark -V ...


Frame 19 (366 bytes on wire, 366 bytes captured)
    Arrival Time: Mar  9, 2009 15:24:42.257042000
    [Time delta from previous captured frame: 15.000093000 seconds]
    [Time delta from previous displayed frame: 15.000093000 seconds]
    [Time since reference or first frame: 780.215513000 seconds]
    Frame Number: 19
    Frame Length: 366 bytes
    Capture Length: 366 bytes
    [Frame is marked: False]
    [Protocols in frame: eth:ip:udp:bootp]
Ethernet II, Src: D-Link_17:c6:28 (00:1c:f0:17:c6:28), Dst: IntelCor_06:8b:c7 (00:1c:c0:06:8b:c7)
    Destination: IntelCor_06:8b:c7 (00:1c:c0:06:8b:c7)
        Address: IntelCor_06:8b:c7 (00:1c:c0:06:8b:c7)
        .... ...0 .... .... .... .... = IG bit: Individual address (unicast)
        .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
    Source: D-Link_17:c6:28 (00:1c:f0:17:c6:28)
        Address: D-Link_17:c6:28 (00:1c:f0:17:c6:28)
        .... ...0 .... .... .... .... = IG bit: Individual address (unicast)
        .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
    Type: IP (0x0800)
Internet Protocol, Src: 172.29.14.122 (172.29.14.122), Dst: 172.29.14.1 (172.29.14.1)
    Version: 4
    Header length: 20 bytes
    Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
        0000 00.. = Differentiated Services Codepoint: Default (0x00)
        .... ..0. = ECN-Capable Transport (ECT): 0
        .... ...0 = ECN-CE: 0
    Total Length: 352
    Identification: 0x00c6 (198)
    Flags: 0x00
        0... = Reserved bit: Not set
        .0.. = Don't fragment: Not set
        ..0. = More fragments: Not set
    Fragment offset: 0
    Time to live: 128
    Protocol: UDP (0x11)
    Header checksum: 0xc411 [correct]
        [Good: True]
        [Bad : False]
    Source: 172.29.14.122 (172.29.14.122)
    Destination: 172.29.14.1 (172.29.14.1)
User Datagram Protocol, Src Port: bootpc (68), Dst Port: bootps (67)
    Source port: bootpc (68)
    Destination port: bootps (67)
    Length: 332
    Checksum: 0x4a5c [correct]
        [Good Checksum: True]
        [Bad Checksum: False]
Bootstrap Protocol
    Message type: Boot Request (1)
    Hardware type: Ethernet
    Hardware address length: 6
    Hops: 1
    Transaction ID: 0xa9dbdf39
    Seconds elapsed: 28 (little endian bug?)
    Bootp flags: 0x8000 (Broadcast)
        1... .... .... .... = Broadcast flag: Broadcast
        .000 0000 0000 0000 = Reserved flags: 0x0000
    Client IP address: 0.0.0.0 (0.0.0.0)
    Your (client) IP address: 0.0.0.0 (0.0.0.0)
    Next server IP address: 0.0.0.0 (0.0.0.0)
    Relay agent IP address: 172.29.14.122 (172.29.14.122)
    Client MAC address: Dell_95:8d:8b (00:1c:23:95:8d:8b)
    Server host name not given
    Boot file name not given
    Magic cookie: (OK)
    Option: (t=53,l=1) DHCP Message Type = DHCP Discover
        Option: (53) DHCP Message Type
        Length: 1
        Value: 01
    Option: (t=116,l=1) DHCP Auto-Configuration
        Option: (116) DHCP Auto-Configuration
        Length: 1
        Value: 01
    Option: (t=61,l=7) Client identifier
        Option: (61) Client identifier
        Length: 7
        Value: 01001C23958D8B
        Hardware type: Ethernet
        Client MAC address: Dell_95:8d:8b (00:1c:23:95:8d:8b)
    Option: (t=50,l=4) Requested IP Address = 169.254.86.169
        Option: (50) Requested IP Address
        Length: 4
        Value: A9FE56A9
    Option: (t=12,l=6) Host Name = "tester"
        Option: (12) Host Name
        Length: 6
        Value: 746573746572
    Option: (t=60,l=8) Vendor class identifier = "MSFT 5.0"
        Option: (60) Vendor class identifier
        Length: 8
        Value: 4D53465420352E30
    Option: (t=55,l=11) Parameter Request List
        Option: (55) Parameter Request List
        Length: 11
        Value: 010F03062C2E2F1F21F92B
        1 = Subnet Mask
        15 = Domain Name
        3 = Router
        6 = Domain Name Server
        44 = NetBIOS over TCP/IP Name Server
        46 = NetBIOS over TCP/IP Node Type
        47 = NetBIOS over TCP/IP Scope
        31 = Perform Router Discover
        33 = Static Route
        249 = Classless Static Route (Microsoft)
        43 = Vendor-Specific Information
    Option: (t=43,l=2) Vendor-Specific Information
        Option: (43) Vendor-Specific Information
        Length: 2
        Value: DC00
    Option: (t=82,l=25) Agent Information Option
        Option: (82) Agent Information Option
        Length: 25
        Value: 0106000408BC0001020F010D3137322E32392E31342E3132...
        Agent Circuit ID: 000408BC0001
        Agent Remote ID: 010D3137322E32392E31342E313232
    End Option
Источник — https://noname.com.ua/mediawiki/index.php?title=D-LINK_DHCP_Relay_option_82&oldid=268