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Network Administration 4-17
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If you want changes made with
ifconfig
to remain in effect after a reboot, include
the
ifconfig
commands in the
/etc/rc
file.
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Table 4-7 illustrates examples of how to use the
ifconfig
command to view inter-
face configuration information.
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To get the security of failover or the throughput that multiple interfaces working as
one interface can provide, you can group up to four Ethernet interfaces. You group
them into a logical interface unit known as a trunk. A trunk is composed of links, each
of which is an interface. Commands that work on physical interfaces also work on
trunks, except that the
ifstat
command returns limited trunk information.
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Trunks are also referred to by the following terms:
Virtual aggregations
Link aggregations
EtherChannel virtual interfaces.
This document uses the term trunk.
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Figure 4-1 shows four separate interfaces,
e3a
,
e3b
,
e3c
, and
e3d
, before trunking.
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Show the current configurations of all
network interfaces.
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Show the current configuration of a
specific network interface.
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Example: Enter the following com-
mand to show the current
configuration of interface e0:
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