Configuring Proxy Arp (Cli Procedure) - Juniper JUNOS OS 10.3 - SOFTWARE Manual

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Configuring Proxy ARP (CLI Procedure)

Copyright © 2010, Juniper Networks, Inc.
To specify that the remote ID suboption value contains a character string:
9.
[edit ethernet-switching-options secure-access-port]
user@switch# set vlan employee dhcp-option82 remote-id use-stringmystring
To configure a vendor ID suboption and use the default value (the default value is
10.
), do not type a character string after the
Juniper
[edit ethernet-switching-options secure-access-port]
user@switch# set vlan employee dhcp-option82 vendor-id
To specify that the vendor ID suboption value contains a character string value that
11.
you specify rather than
[edit ethernet-switching-options secure-access-port]
user@switch# set vlan employee dhcp-option82 vendor-id mystring
To view results of the configuration steps before committing the configuration, type the
command at the user prompt.
show
To commit these changes to the active configuration, type the
user prompt.
Example: Setting Up DHCP Option 82 on an EX Series Switch with No Relay Agent
Between Clients and DHCP Server on page 2898
Understanding DHCP Option 82 for Port Security on EX Series Switches on page 2840
RFC 3046, DHCP Relay Agent Information Option, at
You can configure proxy Address Resolution Protocol (ARP) on your EX Series switch to
enable the switch to respond to ARP queries for network addresses by offering its own
media access control (MAC) address. With proxy ARP enabled, the switch captures and
routes traffic to the intended destination.
To configure proxy ARP on a single interface:
[edit interfaces]
user@switch# set ge-0/0/3 unit 0 proxy-arp restricted
BEST PRACTICE: We recommend that you configure proxy ARP in restricted
mode. In restricted mode, the switch is not a proxy if the source and target
IP addresses are on the same subnet. If you use unrestricted mode, disable
gratuitous ARP requests on the interface to avoid the situation of the switch's
response to a gratuitous ARP request appearing to the host to be an indication
of an IP conflict:
To configure proxy ARP on a routed VLAN interface (RVI):
[edit interfaces]
user@switch# set vlan unit 100 proxy-arp restricted
vendor-id
(the default):
Juniper
Chapter 95: Configuring Port Security
option keyword:
commit command at the
http://tools.ietf.org/html/rfc3046.
2931