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--- old/./arp.1m.txt
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1 1 System Administration Commands arp(1M)
2 2
3 3
4 4
5 5 NAME
6 6 arp - address resolution display and control
7 7
8 8 SYNOPSIS
9 9 arp hostname
10 10
11 11
12 12 arp -a [-n]
13 13
14 14
15 15 arp -d hostname
16 16
17 17
18 18 arp -f filename
19 19
20 20
21 21 arp -s hostname ether_address [temp] [pub] [trail]
22 22 [permanent]
23 23
24 24
25 25 DESCRIPTION
26 26 The arp program displays and modifies the Internet-to-MAC
27 27 address translation tables used by the address resolution
28 28 protocol (see arp(7P)).
29 29
30 30
31 31 With no flags, the program displays the current ARP entry
32 32 for hostname. The host may be specified by name or by
33 33 number, using Internet dot notation.
34 34
35 35
36 36 Options that modify the ARP translation tables (-d, -f, and
37 37 -s) can be used only when the invoked command is granted the
38 38 sys_net_config privilege. See privileges(5).
39 39
40 40 OPTIONS
41 41 -a Display all of the current ARP entries. The definition
42 42 for the flags in the table are:
43 43
44 44 d Unverified; this is a local IP address that is
45 45 currently undergoing Duplicate Address Detection.
46 46 ARP will not respond to requests for this address
47 47 until Duplicate Address Detection completes.
48 48
49 49
50 50 o Old; this entry is aging away. If IP requests it
51 51 again, a new ARP query will be generated. This
52 52 state is used for detecting peer address changes.
53 53
54 54
55 55 y Delayed; periodic address defense and conflict
56 56 detection was unable to send a packet due to
57 57
58 58
59 59
60 60 SunOS 5.11 Last change: 25 Jul 2006 1
61 61
62 62
63 63
64 64
65 65
66 66
67 67 System Administration Commands arp(1M)
68 68
69 69
70 70
71 71 internal network use limits for non-traffic-
72 72 related messages (100 packets per hour per inter-
73 73 face). This occurs only on interfaces with very
74 74 large numbers of aliases.
75 75
76 76
77 77 A Authority; this machine is authoritative for this
78 78 IP address. ARP will not accept updates from
79 79 other machines for this entry.
80 80
81 81
82 82 L Local; this is a local IP address configured on
83 83 one of the machine's logical interfaces. ARP will
84 84 defend this address if another node attempts to
85 85 claim it.
86 86
87 87
88 88 M Mapping; only used for the multicast entry for
89 89 224.0.0.0
90 90
91 91
92 92 P Publish; includes IP address for the machine and
93 93 the addresses that have explicitly been added by
94 94 the -s option. ARP will respond to ARP requests
95 95 for this address.
96 96
97 97
98 98 S Static; entry cannot be changed by learned infor-
99 99 mation. This indicates that the permanent flag
100 100 was used when creating the entry.
101 101
102 102
103 103 U Unresolved; waiting for ARP response.
104 104
105 105 You can use the -n option with the -a option to dis-
106 106 able the automatic numeric IP address-to-name transla-
107 107 tion. Use arp -an or arp -na to display numeric IP
108 108 addresses. The arp -a option is equivalent to:
109 109
110 110 # netstat -p -f inet
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111 111
112 112
113 113 ...and -an and -na are equivalent to:
114 114
115 115 # netstat -pn -f inet
116 116
117 117
118 118
119 119
120 120 -d Delete an entry for the host called hostname.
121 +
122 + Note that ARP entries for IPMP data and test addresses
123 + are managed by the kernel, and thus cannot be deleted.
121 124
122 125
123 126
124 127
125 -
126 128 SunOS 5.11 Last change: 25 Jul 2006 2
127 129
128 130
129 131
130 132
131 133
132 134
133 135 System Administration Commands arp(1M)
134 136
135 137
136 138
137 139 -f Read the file named filename and set multiple entries
138 140 in the ARP tables. Entries in the file should be of
139 141 the form:
140 142
141 143 hostname MACaddress [temp] [pub] [trail] [permanent]
142 144
143 145
144 146 See the -s option for argument definitions.
145 147
146 148
147 149 -s Create an ARP entry for the host called hostname with
148 150 the MAC address MACaddress. For example, an Ethernet
149 151 address is given as six hexadecimal bytes separated by
150 152 colons. The entry will not be subject to deletion by
151 153 aging unless the word temp is specified in the com-
152 154 mand. If the word pub is specified, the entry will be
153 155 published, which means that this system will respond
154 156 to ARP requests for hostname even though the hostname
155 157 is not its own. The word permanent indicates that the
156 158 system will not accept MAC address changes for host-
157 159 name from the network.
158 160
159 161 Solaris does not implement trailer encapsulation, and
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160 162 the word trail is accepted on entries for compatibil-
161 163 ity only.
162 164
163 165 arp -s can be used for a limited form of proxy ARP
164 166 when a host on one of the directly attached networks
165 167 is not physically present on a subnet. Another machine
166 168 can then be configured to respond to ARP requests
167 169 using arp -s. This is useful in certain SLIP confi-
168 170 gurations.
169 171
172 + Non-temporary proxy ARP entries for an IPMP group are
173 + automatically managed by the kernel. Specifically, if
174 + the hardware address in an entry matches the hardware
175 + address of an IP interface in an IPMP group, and the
176 + IP address is not local to the system, this will be
177 + regarded as an IPMP proxy ARP entry. This entry will
178 + have its hardware address automatically adjusted in
179 + order to keep the IP address reachable so long as the
180 + IPMP group has not entirely failed.
170 181
182 + ARP entries must be consistent across an IPMP group.
183 + Therefore, ARP entries cannot be associated with
184 + individual underlying IP interfaces in an IPMP group,
185 + and must instead be associated with the corresponding
186 + IPMP IP interface.
187 +
188 + Note that ARP entries for IPMP data and test addresses
189 + are managed by the kernel, and thus cannot be changed.
190 +
191 +
171 192 ATTRIBUTES
172 193 See attributes(5) for descriptions of the following attri-
173 194 butes:
174 195
175 196
176 197
177 198 ____________________________________________________________
178 199 | ATTRIBUTE TYPE | ATTRIBUTE VALUE |
179 200 |_____________________________|_____________________________|
180 201 | Availability | SUNWcsu |
181 202 |_____________________________|_____________________________|
182 203
183 204
184 205 SEE ALSO
185 206 ifconfig(1M), netstat(1M), attributes(5), privileges(5),
186 207 arp(7P)
187 208
188 209
189 210
190 211
191 212
192 213 SunOS 5.11 Last change: 25 Jul 2006 3
193 214
194 215
195 216
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