Operation Manual

Licenses to enable this feature.
Next Hop Resolution Protocol is a protocol used to discover addresses of clients on Non-Broadcast Multiple Access
(NBMA) networks. It is used to create next-generation VPN technologies that allow shortcutting between spokes. With
NHRP, systems attached to an NBMA network dynamically learn the NBMA address of the other systems that are part
of that network, allowing these systems to directly communicate without requiring an intermediate hop.
The NHRP Supported Interfaces table displays the following fields for each configured NHRP interface:
Name: Name of the GRE tunnel that NHRP will use.
Protocol Address/Prefix: GRE tunnel endpoint mapping that NHRP associates with the NBMA server.
NBMA Address: NBMA server address the protocol address/prefix is associated with.
Flags:
SD: Shortcut-Destination
N: Non-Caching
S: Shortcut
R: Redirect
Click Add to create a new NHRP interface.
Enabled: Enable or disable the interface.
Name: Give the interface a unique name that matches the mGRE (multipoint GRE) tunnel. Select from configured
GRE tunnels or input manually.
Peer Authentication: Embeds the secret plaintext password to outgoing NHRP packets. Incoming NHRP packets
on this interface are discarded unless this password is present. Max length: eight characters.
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