Project

General

Profile

Edit History

Wiki »

CiscoでDHCPクライアントかつ固定IPアドレスを割り振る場合の設定 » History » Version 1

Tsutomu KIMURA, 07/14/2013 11:55 PM

1 1 Tsutomu KIMURA 
h1. 注意
2 





    3
    
    
    
…繰り返すが、CiscoデバイスをDHCP *クライアント* 、かつ *固定でIPアドレスを割り振る場合* の話である。DHCPサーバにする際の注意事項は今までも散々言われていることなので、多くは書かない。





    4
    
    
    





    5
    
    
    
h1. サーバ側の設定





    6
    
    
    





    7
    
    
    
……多くは書かない。機材はCisco1812J。





    8
    
    
    





    9
    
    
    
<pre>





    10
    
    
    
ip dhcp excluded-address 10.0.125.1 10.0.125.2





    11
    
    
    
!





    12
    
    
    
ip dhcp pool VLAN-32-dynamic





    13
    
    
    
 network 10.0.125.0 255.255.255.0





    14
    
    
    
 domain-name local





    15
    
    
    
!





    16
    
    
    
ip dhcp pool VLAN-32-static





    17
    
    
    
 host 10.0.125.3 255.255.255.0





    18
    
    
    
 client-identifier 0100.14a8.2012.0a





    19
    
    
    
 domain-name local





    20
    
    
    
 client-name c1760





    21
    
    
    
 lease infinite





    22
    
    
    
!





    23
    
    
    
</pre>





    24
    
    
    





    25
    
    
    
読めばわかると思うが、一応。





    26
    
    
    





    27
    
    
    
* IPアドレスブロックは10.0.125.0/24。





    28
    
    
    
* うち、固定のIPアドレスを割り当てるのはMACアドレス00:14:A8:20:12:0Aをもつネットワークインタフェイスであり(client-identifierオプションの使い方に注意)、10.0.125.3が割り振られる。





    29
    
    
    





    30
    
    
    
h1. クライアント側の設定





    31
    
    
    





    32
    
    
    
実はこちらが原因でうまく動かなかった。機材はCisco1760。





    33
    
    
    





    34
    
    
    
<pre>





    35
    
    
    
interface FastEthernet0/0





    36
    
    
    
 ip address dhcp client-id FastEthernet0/0 hostname c1760





    37
    
    
    
 speed auto





    38
    
    
    
!





    39
    
    
    
</pre>





    40
    
    
    





    41
    
    
    
ポイントはclient-idを指定すること。hostnameだけではダメ。





    42
    
    
    





    43
    
    
    
h1. サーバ側のログ(成功した場合)





    44
    
    
    





    45
    
    
    
クライアント/サーバ双方の設定が問題なければ、予定通りのIPアドレスが割り振られる。





    46
    
    
    





    47
    
    
    
<pre>





    48
    
    
    
Aug 26 15:09:16.995: DHCPD: client's VPN is .





    49
    
    
    
Aug 26 15:09:16.995: DHCPD: No option 125





    50
    
    
    
Aug 26 15:09:16.999: DHCPD: Sending notification of DISCOVER:





    51
    
    
    
Aug 26 15:09:16.999:   DHCPD: htype 1 chaddr 0014.a820.120a





    52
    
    
    
Aug 26 15:09:16.999:   DHCPD: remote id 020a00000a007d0108000020





    53
    
    
    
Aug 26 15:09:16.999:   DHCPD: circuit id 00000000





    54
    
    
    
Aug 26 15:09:16.999: DHCPD: DHCPDISCOVER received from client 0100.14a8.2012.0a on interface Vlan32.





    55
    
    
    
Aug 26 15:09:16.999: DHCPD: Seeing if there is an internally specified pool class:





    56
    
    
    
Aug 26 15:09:16.999:   DHCPD: htype 1 chaddr 0014.a820.120a





    57
    
    
    
Aug 26 15:09:16.999:   DHCPD: remote id 020a00000a007d0108000020





    58
    
    
    
Aug 26 15:09:16.999:   DHCPD: circuit id 00000000





    59
    
    
    
Aug 26 15:09:16.999: DHCPD: Found Manual/Static binding





    60
    
    
    
Aug 26 15:09:16.999: DHCPD: Sending DHCPOFFER to client 0100.14a8.2012.0a (10.0.125.3).





    61
    
    
    
Aug 26 15:09:16.999: DHCPD: child  pool: 10.0.125.3 / 255.255.255.0 (VLAN-32-static)





    62
    
    
    
Aug 26 15:09:16.999: DHCPD: parent pool: 10.0.125.0 / 255.255.255.0 (VLAN-32-dynamic)





    63
    
    
    
Aug 26 15:09:16.999: DHCPD: child  pool: 10.0.125.0 / 255.255.255.0 (VLAN-32-dynamic)





    64
    
    
    
Aug 26 15:09:16.999: DHCPD: pool VLAN-32-dynamic has no parent.





    65
    
    
    
Aug 26 15:09:16.999: DHCPD: child  pool: 10.0.125.3 / 255.255.255.0 (VLAN-32-static)





    66
    
    
    
Aug 26 15:09:16.999: DHCPD: parent pool: 10.0.125.0 / 255.255.255.0 (VLAN-32-dynamic)





    67
    
    
    
Aug 26 15:09:16.999: DHCPD: child  pool: 10.0.125.0 / 255.255.255.0 (VLAN-32-dynamic)





    68
    
    
    
Aug 26 15:09:16.999: DHCPD: pool VLAN-32-dynamic has no parent.





    69
    
    
    
Aug 26 15:09:16.999: DHCPD: child  pool: 10.0.125.3 / 255.255.255.0 (VLAN-32-static)





    70
    
    
    
Aug 26 15:09:16.999: DHCPD: parent pool: 10.0.125.0 / 255.255.255.0 (VLAN-32-dynamic)





    71
    
    
    
Aug 26 15:09:16.999: DHCPD: child  pool: 10.0.125.0 / 255.255.255.0 (VLAN-32-dynamic)





    72
    
    
    
Aug 26 15:09:16.999: DHCPD: pool VLAN-32-dynamic has no parent.





    73
    
    
    
Aug 26 15:09:16.999: DHCPD: no option 125





    74
    
    
    
Aug 26 15:09:16.999: DHCPD: broadcasting BOOTREPLY to client 0014.a820.120a.





    75
    
    
    
Aug 26 15:09:17.003: DHCPD: client's VPN is .





    76
    
    
    
Aug 26 15:09:17.003: DHCPD: No option 125





    77
    
    
    
Aug 26 15:09:17.003: DHCPD: DHCPREQUEST received from client 0100.14a8.2012.0a.





    78
    
    
    
Aug 26 15:09:17.003: DHCPD: Sending notification of ASSIGNMENT:





    79
    
    
    
Aug 26 15:09:17.003:  DHCPD: address 10.0.125.3 mask 255.255.255.0





    80
    
    
    
Aug 26 15:09:17.003:   DHCPD: htype 1 chaddr 0014.a820.120a





    81
    
    
    
Aug 26 15:09:17.003:   DHCPD: lease time remaining (secs) = 4294967295





    82
    
    
    
Aug 26 15:09:17.003: DHCPD: Appending default domain from pool





    83
    
    
    
Aug 26 15:09:17.003: DHCPD: Using hostname 'c1760.local.' for dynamic update (from hostname option)





    84
    
    
    
Aug 26 15:09:17.003: DHCPD: Sending DHCPACK to client 0100.14a8.2012.0a (10.0.125.3).





    85
    
    
    
Aug 26 15:09:17.003: DHCPD: child  pool: 10.0.125.3 / 255.255.255.0 (VLAN-32-static)





    86
    
    
    
Aug 26 15:09:17.003: DHCPD: parent pool: 10.0.125.0 / 255.255.255.0 (VLAN-32-dynamic)





    87
    
    
    
Aug 26 15:09:17.003: DHCPD: child  pool: 10.0.125.0 / 255.255.255.0 (VLAN-32-dynamic)





    88
    
    
    
Aug 26 15:09:17.003: DHCPD: pool VLAN-32-dynamic has no parent.





    89
    
    
    
Aug 26 15:09:17.003: DHCPD: child  pool: 10.0.125.3 / 255.255.255.0 (VLAN-32-static)





    90
    
    
    
Aug 26 15:09:17.003: DHCPD: parent pool: 10.0.125.0 / 255.255.255.0 (VLAN-32-dynamic)





    91
    
    
    
Aug 26 15:09:17.003: DHCPD: child  pool: 10.0.125.0 / 255.255.255.0 (VLAN-32-dynamic)





    92
    
    
    
Aug 26 15:09:17.003: DHCPD: pool VLAN-32-dynamic has no parent.





    93
    
    
    
Aug 26 15:09:17.007: DHCPD: child  pool: 10.0.125.3 / 255.255.255.0 (VLAN-32-static)





    94
    
    
    
Aug 26 15:09:17.007: DHCPD: parent pool: 10.0.125.0 / 255.255.255.0 (VLAN-32-dynamic)





    95
    
    
    
Aug 26 15:09:17.007: DHCPD: child  pool: 10.0.125.0 / 255.255.255.0 (VLAN-32-dynamic)





    96
    
    
    
Aug 26 15:09:17.007: DHCPD: pool VLAN-32-dynamic has no parent.





    97
    
    
    
Aug 26 15:09:17.007: DHCPD: no option 125





    98
    
    
    
Aug 26 15:09:17.007: DHCPD: broadcasting BOOTREPLY to client 0014.a820.120a.





    99
    
    
    
</pre>





    100
    
    
    





    101
    
    
    
h1. サーバ側のログ(失敗した場合)





    102
    
    
    





    103
    
    
    
client-idを忘れると…………こうなるorz





    104
    
    
    





    105
    
    
    
<pre>





    106
    
    
    
Aug 26 15:34:34.608: DHCPD: client's VPN is .





    107
    
    
    
Aug 26 15:34:34.608: DHCPD: No option 125





    108
    
    
    
Aug 26 15:34:34.608: DHCPD: DHCPREQUEST received from client 012c.4138.8759.c5.





    109
    
    
    
Aug 26 15:34:34.608: DHCPD: Finding a relay for client 012c.4138.8759.c5 on interface Vlan1.





    110
    
    
    
Aug 26 15:34:34.608: DHCPD: Seeing if there is an internally specified pool class:





    111
    
    
    
Aug 26 15:34:34.608:   DHCPD: htype 1 chaddr 2c41.3887.59c5





    112
    
    
    
Aug 26 15:34:34.608:   DHCPD: remote id 020a00000a0079fe02000001





    113
    
    
    
Aug 26 15:34:34.608:   DHCPD: circuit id 00000000





    114
    
    
    
Aug 26 15:34:45.688: DHCPD: client's VPN is .





    115
    
    
    
Aug 26 15:34:45.688: DHCPD: No option 125





    116
    
    
    
Aug 26 15:34:45.688: DHCPD: DHCPRELEASE message received from client 0100.14a8.2012.0a (10.0.125.3).





    117
    
    
    
Aug 26 15:34:45.688: DHCPD: Finding a relay for client 0100.14a8.2012.0a on interface Vlan32.





    118
    
    
    
Aug 26 15:34:45.688: DHCPD: Seeing if there is an internally specified pool class:





    119
    
    
    
Aug 26 15:34:45.688:   DHCPD: htype 1 chaddr 0014.a820.120a





    120
    
    
    
Aug 26 15:34:45.688:   DHCPD: remote id 020a00000a007d0108000020





    121
    
    
    
Aug 26 15:34:45.688:   DHCPD: circuit id 00000000





    122
    
    
    
Aug 26 15:34:47.688: DHCPD: client's VPN is .





    123
    
    
    
Aug 26 15:34:47.692: DHCPD: No option 125





    124
    
    
    
Aug 26 15:34:47.692: DHCPD: DHCPRELEASE message received from client 0100.14a8.2012.0a (10.0.125.3).





    125
    
    
    
Aug 26 15:34:47.692: DHCPD: Finding a relay for client 0100.14a8.2012.0a on interface Vlan32.





    126
    
    
    
Aug 26 15:34:47.692: DHCPD: Seeing if there is an internally specified pool class:





    127
    
    
    
Aug 26 15:34:47.692:   DHCPD: htype 1 chaddr 0014.a820.120a





    128
    
    
    
Aug 26 15:34:47.692:   DHCPD: remote id 020a00000a007d0108000020





    129
    
    
    
Aug 26 15:34:47.692:   DHCPD: circuit id 00000000





    130
    
    
    
Aug 26 15:34:50.140: DHCPD: client's VPN is .





    131
    
    
    
Aug 26 15:34:50.140: DHCPD: No option 125





    132
    
    
    
Aug 26 15:34:50.140: DHCPD: Sending notification of DISCOVER:





    133
    
    
    
Aug 26 15:34:50.140:   DHCPD: htype 1 chaddr 0014.a820.120a





    134
    
    
    
Aug 26 15:34:50.140:   DHCPD: remote id 020a00000a007d0108000020





    135
    
    
    
Aug 26 15:34:50.140:   DHCPD: circuit id 00000000





    136
    
    
    
Aug 26 15:34:50.140: DHCPD: DHCPDISCOVER received from client 0063.6973.636f.2d30.3031.342e.6138.3230.2e31.3230.612d.4661.302f.30 on interface Vlan32.





    137
    
    
    
Aug 26 15:34:50.140: DHCPD: Seeing if there is an internally specified pool class:





    138
    
    
    
Aug 26 15:34:50.140:   DHCPD: htype 1 chaddr 0014.a820.120a





    139
    
    
    
Aug 26 15:34:50.140:   DHCPD: remote id 020a00000a007d0108000020





    140
    
    
    
Aug 26 15:34:50.140:   DHCPD: circuit id 00000000





    141
    
    
    
Aug 26 15:34:50.140: DHCPD: Allocate an address without class information (10.0.125.0)





    142
    
    
    
Aug 26 15:34:50.140: DHCPD: Adding binding to radix tree (10.0.125.10)





    143
    
    
    
Aug 26 15:34:50.140: DHCPD: Adding binding to hash tree





    144
    
    
    
Aug 26 15:34:50.144: DHCPD: assigned IP address 10.0.125.10 to client 0063.6973.636f.2d30.3031.342e.6138.3230.2e31.3230.612d.4661.302f.30.





    145
    
    
    
Aug 26 15:34:50.144: DHCPD: Saving workspace (ID=0x6F00002C)





    146
    
    
    
Aug 26 15:34:52.140: DHCPD: Reprocessing saved workspace (ID=0x6F00002C)





    147
    
    
    
Aug 26 15:34:52.140: DHCPD: Sending notification of DISCOVER:





    148
    
    
    
Aug 26 15:34:52.140:   DHCPD: htype 1 chaddr 0014.a820.120a





    149
    
    
    
Aug 26 15:34:52.140:   DHCPD: remote id 020a00000a007d0108000020





    150
    
    
    
Aug 26 15:34:52.140:   DHCPD: circuit id 00000000





    151
    
    
    
Aug 26 15:34:52.140: DHCPD: DHCPDISCOVER received from client 0063.6973.636f.2d30.3031.342e.6138.3230.2e31.3230.612d.4661.302f.30 on interface Vlan32.





    152
    
    
    
Aug 26 15:34:52.140: DHCPD: Seeing if there is an internally specified pool class:





    153
    
    
    
Aug 26 15:34:52.140:   DHCPD: htype 1 chaddr 0014.a820.120a





    154
    
    
    
Aug 26 15:34:52.140:   DHCPD: remote id 020a00000a007d0108000020





    155
    
    
    
Aug 26 15:34:52.140:   DHCPD: circuit id 00000000





    156
    
    
    
Aug 26 15:34:52.140: DHCPD: Found previous server binding





    157
    
    
    
Aug 26 15:34:52.140: DHCPD: Sending DHCPOFFER to client 0063.6973.636f.2d30.3031.342e.6138.3230.2e31.3230.612d.4661.302f.30 (10.0.125.10).





    158
    
    
    
Aug 26 15:34:52.140: DHCPD: child  pool: 10.0.125.0 / 255.255.255.0 (VLAN-32-dynamic)





    159
    
    
    
Aug 26 15:34:52.140: DHCPD: pool VLAN-32-dynamic has no parent.





    160
    
    
    
Aug 26 15:34:52.140: DHCPD: child  pool: 10.0.125.0 / 255.255.255.0 (VLAN-32-dynamic)





    161
    
    
    
Aug 26 15:34:52.140: DHCPD: pool VLAN-32-dynamic has no parent.





    162
    
    
    
Aug 26 15:34:52.140: DHCPD: child  pool: 10.0.125.0 / 255.255.255.0 (VLAN-32-dynamic)





    163
    
    
    
Aug 26 15:34:52.140: DHCPD: pool VLAN-32-dynamic has no parent.





    164
    
    
    
Aug 26 15:34:52.140: DHCPD: no option 125





    165
    
    
    
Aug 26 15:34:52.140: DHCPD: broadcasting BOOTREPLY to client 0014.a820.120a.





    166
    
    
    
Aug 26 15:34:52.144: DHCPD: client's VPN is .





    167
    
    
    
Aug 26 15:34:52.144: DHCPD: No option 125





    168
    
    
    
Aug 26 15:34:52.144: DHCPD: DHCPREQUEST received from client 0063.6973.636f.2d30.3031.342e.6138.3230.2e31.3230.612d.4661.302f.30.





    169
    
    
    
Aug 26 15:34:52.144: DHCPD: Sending notification of ASSIGNMENT:





    170
    
    
    
Aug 26 15:34:52.144:  DHCPD: address 10.0.125.10 mask 255.255.255.0





    171
    
    
    
Aug 26 15:34:52.144:   DHCPD: htype 1 chaddr 0014.a820.120a





    172
    
    
    
Aug 26 15:34:52.144:   DHCPD: lease time remaining (secs) = 86400





    173
    
    
    
Aug 26 15:34:52.144: DHCPD: Appending default domain from pool





    174
    
    
    
Aug 26 15:34:52.144: DHCPD: Using hostname 'c1760.local.' for dynamic update (from hostname option)





    175
    
    
    
Aug 26 15:34:52.144: DHCPD: Sending DHCPACK to client 0063.6973.636f.2d30.3031.342e.6138.3230.2e31.3230.612d.4661.302f.30 (10.0.125.10).





    176
    
    
    
Aug 26 15:34:52.144: DHCPD: child  pool: 10.0.125.0 / 255.255.255.0 (VLAN-32-dynamic)





    177
    
    
    
Aug 26 15:34:52.144: DHCPD: pool VLAN-32-dynamic has no parent.





    178
    
    
    
Aug 26 15:34:52.144: DHCPD: child  pool: 10.0.125.0 / 255.255.255.0 (VLAN-32-dynamic)





    179
    
    
    
Aug 26 15:34:52.144: DHCPD: pool VLAN-32-dynamic has no parent.





    180
    
    
    
Aug 26 15:34:52.144: DHCPD: child  pool: 10.0.125.0 / 255.255.255.0 (VLAN-32-dynamic)





    181
    
    
    
Aug 26 15:34:52.144: DHCPD: pool VLAN-32-dynamic has no parent.





    182
    
    
    
Aug 26 15:34:52.144: DHCPD: no option 125





    183
    
    
    
Aug 26 15:34:52.144: DHCPD: broadcasting BOOTREPLY to client 0014.a820.120a.





    184
    
    
    
</pre>