DRA-2 UNIVERSAL COMMUNICATION NODE
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USER GUIDE - Rev.5 (January 2018)
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Interface.
Identifies the interface on which the protocol will be executed.
•
Server IP Address.
IP address of the equipment providing the services as the
NHRP server.
•
Server NHRP Address.
IP address of the NHRP server, which is the address
accessed by the local client through the respective tunnel.
•
Hold time.
Time during which the record is valid in NHRP.
•
Multicast.
This establishes whether multicast traffic can also be resolved through
the NHRP protocol.
•
Multicast destination.
The IP address of the equipment to which the multicast
traffic must be sent for resolution. The default value is
nhs
, and is equivalent to the
address specified in the parameter
Server NHRP Address
, i.e., the same one that
resolves unicast addresses.
•
Auth. Enable.
This establishes whether communication between the client and
server must include authentication.
•
Authentication key.
This establishes the key to be used for authenticating the
NHRP protocol.
•
Master.
When the NHRP protocol is established with more than one NHRP server
at a time, this parameter controls the priority, in order to determine which of the
NHRP servers the multicast traffic must be sent to. The multicast protocol is usually
a dynamic routing protocol, and so this option ensures that the presence of the
equipment is only announced to one NHRP server at any given time.
The equipment provides an optional monitoring mechanism to verify the accessibility of
NHRP terminator servers. The verification is carried out by sending packets of ICMP
protocol. If the mechanism is active, which is achieved by setting a value other than 0 in the
frequency field, the equipment automatically monitors the NHRP terminators individually.
The monitoring mechanism is in charge of selecting in each moment which of the NHRP
servers, depending on their availability and roles assigned to them, will be active for user
traffic.
Monitoring parameters are:
•
Frequency (minutes).
This allows the frequency of supervision message
transmission to be specified.
