Alcatel-Lucent 7705 Service Manual page 378

IES Command Reference
trusted
Syntax [no] trusted
Context config>service>ies>interface>dhcp>option
Description As specified in RFC 3046, DHCP Relay Agent Information Option, a DHCP request where the giaddr
is 0.0.0.0 and that contains a Option 82 field in the packet, should be discarded unless it arrives on a
"trusted" circuit. If trusted mode is enabled on an IP interface, the Relay Agent (the router) will
modify the request's giaddr to be equal to the ingress interface and forward the request.
This behavior only applies when the action in the Relay Agent Information Option is "keep". In the
case where the Option 82 field is being replaced by the Relay Agent (action = "replace"), the original
Option 82 information is lost, and therefore there is no reason to enable the trusted option.
The no form of this command returns the system to the default.
Default
not enabled
icmp
Syntax icmp
Context config>service>ies>interface
Description This command enables access to the context to configure Internet Control Message Protocol (ICMP)
parameters on a network IP interface. ICMP is a message control and error reporting protocol that
also provides information relevant to IP packet processing.
mask-reply
Syntax [no] mask-reply
Context config>service>ies>interface>icmp
Description This command enables or disables responses to ICMP mask requests on the router interface.
If a local node sends an ICMP mask request to the router interface, the mask-reply command
configures the router interface to reply to the request.
The no form of the command disables replies to ICMP mask requests on the router interface.
Default mask-reply
Page 378 7705 SAR OS Services Guide