HP ProCurve 2910al Switch User Manual

IP Routing Features
Configuring DHCP Relay
Enabling DHCP Relay
The DHCP Relay function is enabled by default on a ProCurve routing switch.
However, if DHCP has been disabled, you can re-enable it by entering the
following command at the global configuration level:
ProCurve(config)# dhcp-relay
To disable the DHCP Relay function, enter the no form of the command:
ProCurve(config)# no dhcp-relay
Configuring an IP Helper Address
To add the IP address of a DHCP server for a specified VLAN on a routing
switch, enter the ip helper-address command at the VLAN configuration level
as in the following example:
ProCurve(config)# vlan 1
ProCurve(vlan-1)# ip helper-address <ip-addr>
To remove the DHCP server helper address, enter the no form of the
command:
ProCurve(vlan-1)# no ip helper-address < ip-addr >
Operating Notes
■ You can configure up to 4000 IP helper addresses on a routing switch. The
helper addresses are shared between the DHCP relay agent and UDP
forwarder feature.
■ A maximum of sixteen IP helper addresses is supported in each VLAN.
Verifying the DHCP Relay Configuration
Displaying the DHCP Relay Setting
Use the show config command (or show running for the running-config file) to
display the current DHCP Relay setting.
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HP ProCurve 2910al Switch Specifications

General

Model	HP ProCurve 2910al Switch
Layer	Layer 3
Jumbo Frame Support	Yes
Power Device	Internal power supply
VLAN Support	Yes
Power Supply	100-240 VAC, 50/60 Hz
Ports	24 or 48 x 10/100/1000 ports
Uplink Ports	4 x SFP (mini-GBIC)
Stacking	Yes
MAC Address Table Size	32000 entries
Routing Protocol	RIP, OSPF, BGP, IGMP
Remote Management Protocol	SNMP 1, RMON 1, RMON 2, RMON 3, RMON 9, Telnet, SNMP 3, SNMP 2c, HTTP, TFTP
Features	VLAN, QoS, IPv6, ACLs
Compliant Standards	IEEE 802.3, IEEE 802.3u, IEEE 802.3ab, IEEE 802.3af
Operating Temperature	0 to 45°C
Operating Humidity	15% to 95% (noncondensing)
Power over Ethernet (PoE)	PoE+ (802.3at) on PoE+ models, PoE (802.3af) on PoE models