Version Description
8.3.19.0 Introduced on the S4820T.
8.3.11.1 Introduced on the Z9000.
8.3.7.0 Introduced on the S4810.
8.1.1.0 Introduced on the E-Series ExaScale.
7.9.1.0 Introduced VRF on the E-Series.
7.6.1.0 Introduced on the S-Series.
7.5.1.0 Introduced on the C-Series.
pre-6.2.1.1 Introduced on the E-Series.
Usage
Information You can add multiple DHCP servers by entering the ip helper-address
command multiple times. If multiple servers are defined, an incoming request is
sent simultaneously to all configured servers and the reply is forwarded to the
DHCP client.
Dell Networking OS uses standard DHCP ports, that is UDP ports 67 (server) and 68
(client) for DHCP relay services. It listens on port 67 and if it receives a broadcast,
the software converts it to unicast, and forwards to it to the DHCP-server with
source port=68 and destination port=67.
The server replies with source port=67, destination port=67 and Dell Networking
OS forwards to the client with source port=67, destination port=68.
ip helper-address hop-count disable
Disable the hop-count increment for the DHCP relay agent.
S6000
Syntax ip helper-address hop-count disable
To re-enable the hop-count increment, use the no ip helper-address hop-
count disable command.
Defaults Enabled; the hops field in the DHCP message header is incremented by default.
Command
Modes
CONFIGURATION
Command
History This guide is platform-specific. For command information about other platforms,
refer to the relevant Dell Networking OS Command Line Reference Guide.
The following is a list of the Dell Networking OS version history for this command.
766 IPv4 Routing