Figure 7.2: Layer 2 Switch - HP bh5700 User Manual

During the initial power up, a startup script called /etc/rcZ.d/S50layer2 is executed at boot
time creating a single untagged VLAN (IP interface labeled as zhp0) which includes all Ethernet
and gigabit ports as one Layer2 switch. The interface to the host is then assigned the IP address of
10.0.0.42 to allow access to the switch. The S50layer2 script does the following:
Uses zconfig to create and configure a single, untagged VLAN that contains all 24 switch
•
ports.
/usr/sbin/zconfig zhp0: vlan1=zre0..23
/usr/sbin/zconfig zre0..23=untag1
Uses ifconfig(1M) to assign the IP address 10.0.0.42 to the interface.
•
/usr/sbin/ifconfig zhp0 10.0.0.42 up
To create another VLAN that only contained the two ports, first use zconfig from the
command to build the VLAN and create a network interface for the host.
zconfig zhp1: vlan2=zre20,zre21
Then, bring up the interface with ifconfig(1M):
ifconfig zhp1 193.08.1.1 up
Note that ports zre20 and zre21 are members of both vlan1 and vlan2, and that they are
tagged for vlan2. A port cannot be untagged for more than one VLAN. You can view the
configured VLANs with zconfig.
zconfig -a
Ethernet Switch Blade User's Guide
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zre0 zre1 zre2

Figure 7.2: Layer 2 Switch

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Linux IP
zhp0
10.0.0.42
VLAN 1
. . .
. . .
zre20 zre22
24 10/100/1000 Ports
release 3.2.2j
zre23
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