Configuring an IP Link
This procedure is used to configure the link parameters for IP cards using the chg-ip-lnk
command. These link parameters are used to configure the Ethernet hardware.
The chg-ip-lnk
command uses the following parameters.
:loc
– The card location of the IP card.
:port
– The Ethernet interface on the IP card, A or B.
:ipaddr
– IP address assigned to the Ethernet interface on the IP card. This is an IP address expressed in standard “dot notation.” IP addresses consist of the system’s network number and the machine’s unique host number.
:submask
– The subnet mask of the IP interface. A subnet mask is an IP address with a restricted range of values. The bits in the mask must be a string of one’s followed by a string of zero’s. There must be at least two one’s in the mask, and the mask cannot be all one’s. See Table 4-4 to assign the correct parameter values.
:auto
– Tells hardware whether to automatically detect the duplex
and speed
.
:duplex
– This is the mode of operation of the interface.
:speed
– This is the bandwidth in megabits per second of the interface.
:mactype
– This is the Media Access Control Type of the interface.
:mcast
– The multicast control flag. This parameter enables or disables multicast support for the interface.
The EAGLE can contain a maximum of 2048 IP links.
A zero ipaddr
parameter value (0.0.0.0
) indicates the IP card Ethernet interface to IP link association is disabled. The host to the original IP address must be removed before the ipaddr=0.0.0.0
can be specified.
If the defrouter
parameter of the chg-ip-card
command contains an IP address for the card specified in this procedure, the network portion of one of the IP addresses assigned to the card in this procedure must match the network portion of the IP address specified by the defrouter parameter of the chg-ip-card
command.
The network portion of the IP address is based on the class of the IP address (shown in Table 4-4). If the IP address is a Class A IP address, the first field is the network portion of the IP address. If the IP address is a Class B IP address, the first two fields are the network portion of the IP address. If the IP address is a Class C IP address, the first three fields are the network portion of the IP address. For example, if the IP address is 193.5.207.150, a Class C IP address, the network portion of the IP address is 193.5.207.
If the auto=yes
parameter is specified, then the duplex
and speed
parameters are not allowed.
The loc
parameter value must be shown in the rtrv-ip-card
output.
The IP card must be placed out of service.
If either the ipaddr
or submask
parameters are specified, then both parameters must be specified. If the ipaddr
parameter value is zero (0.0.0.0
), the submask
parameter is not required.
The IP address and subnet mask values cannot be changed to an address representing a different network if:
- If the network interface specified by the
loc
andport
parameters has a default router,dnsa
, ordsnb
parameter values assigned to it, as shown in thertrv-ip-card
output. - Any IP routes, shown in the
rtrv-ip-rte
output, reference the IP address for the network interface specified by theloc
andport
parameters.
The IP link cannot be changed if open associations reference the IP link being changed.
The network portion of the IP addresses assigned to the IP links on an IP card must be unique. For example, if IP links are assigned to IP card 1103, the network portion of the IP address for Ethernet interface A (port=a
) must be different from the IP address for Ethernet interface B (port=b
).
The submask
parameter value is based upon the ipadddr
setting. See Table 4-4 for the valid input values for the submask
and ipaddr
parameter combinations.
Table 4-4 Valid Subnet Mask
Parameter Values
Network Class | IP Network Address Range | Valid Subnet Mask Values |
---|---|---|
A |
1.0.0.0 to 127.0.0.0 |
255.0.0.0 (the default value for a class A IP address) 255.192.0.0 255.224.0.0 255.240.0.0 255.248.0.0 255.252.0.0 255.254.0.0 255.255.128.1 |
A+B |
128.0.0.0 to 191.255.0.0 |
255.255.0.0 (the default value for a class B IP address) 255.255.192.0 255.255.224.0 255.255.240.0 255.255.248.0 255.255.252.0 255.255.254.0 255.255.255.128 |
A+B+C |
192.0.0.0 to 223.255.255.0 |
255.255.255.0 (the default value for a class C IP address) 255.255.255.192 255.255.255.224 255.255.255.240 255.255.255.248 255.255.255.252 |
If a Class B IP address is specified for the ipaddr
parameter of the chg-ip-lnk
command, the subnet address that results from the ipaddr
and submask
parameter values cannot be the same as the subnet address that results from the pvn
and pvnmask
, fcna
and fcnamask
, or fcnb
and fcnbmask
parameter values of the chg-netopts
command. The pvn
and pvnmask
, fcna
and fcnamask
, or fcnb
and fcnbmask
parameter values can be verified by entering the rtrv-netopts
command. Choose ipaddr
and submask
parameter values for the IP link whose resulting subnet address is not be the same as the subnet address resulting from the pvn
and pvnmask
, fcna
and fcnamask
, or fcnb
and fcnbmask
parameter values of the chg-netopts
command.
Canceling the RTRV-ASSOC
Command
Because the rtrv-assoc
command used in this procedure can output information for a long period of time, the rtrv-assoc
command can be canceled and the output to the terminal stopped. There are three ways that the rtrv-assoc
command can be canceled.
- Press the
F9
function key on the keyboard at the terminal where thertrv-assoc
commandwas were entered. - Enter the
canc-cmd
without thetrm
parameter at the terminal where thertrv-assoc
commandwas entered. - Enter the
canc-cmd:trm=<xx>
, where<xx>
is the terminal where thertrv-assoc
commandwas entered, from another terminal other that the terminal where thertrv-assoc
commandwas entered. To enter thecanc-cmd:trm=<xx>
command, the terminal must allow Security Administration commands to be entered from it and the user must be allowed to enter Security Administration commands. The terminal’s permissions can be verified with thertrv-secu-trm
command. The user’s permissions can be verified with thertrv-user
orrtrv-secu-user
commands.
For more information about the canc-cmd
command, go to Commands User's Guide.
Figure 4-7 Configuring an IP Link
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