HP 6120XG HP ProCurve Series 6120 Blade Switches Advanced Traffic Management G - Page 73

Using DHCP to Obtain an IP Address, Example of DHCP Server on Management VLAN

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Static Virtual LANs (VLANs) Special VLAN Types Using DHCP to Obtain an IP Address You can use DHCP to obtain an IPv4 address for your Management VLAN or a client on that VLAN. The following examples illustrate when an IP address will be received from the DHCP server. 1. If Blue_VLAN is configured as the Management VLAN and the DHCP server is also on Blue_VLAN, Blue_VLAN receives an IP address. Because DHCP Relay does not forward onto or off of the Management VLAN, devices on Red_VLAN cannot get an IP address from the DHCP server on Blue_VLAN (Management VLAN) and Red_VLAN does not receive an IP address. See figure 2-32. DHCP Server Blue_VLAN is Management VLAN - receives IP address Red_VLAN does not receive IP address Red_VLAN Blue_VLAN is Management VLAN Figure 2-32. Example of DHCP Server on Management VLAN 2-50

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2-50
Static Virtual LANs (VLANs)
Special VLAN Types
Using DHCP to Obtain an IP Address
You can use DHCP to obtain an IPv4 address for your Management VLAN or
a client on that VLAN. The following examples illustrate when an IP address
will be received from the DHCP server.
1.
If Blue_VLAN is configured as the Management VLAN and the DHCP
server is also on Blue_VLAN, Blue_VLAN receives an IP address. Because
DHCP Relay does not forward onto or off of the Management VLAN,
devices on Red_VLAN cannot get an IP address from the DHCP server on
Blue_VLAN (Management VLAN) and Red_VLAN does not receive an IP
address. See figure 2-32.
Figure 2-32.
Example of DHCP Server on Management VLAN
DHCP
Server
Red_VLAN
Blue_VLAN is Management VLAN
Blue_VLAN is Management VLAN - receives IP
address
Red_VLAN does not receive IP address