purpose? ip nhrp responder
I am wondering how to leverage this command. I have never used it. I understand that it is related to the NHS command, but is there an obvious use?
I think this is beyond the R&S exam, so maybe a INE Security candidate/instructor can help me understand the purpose of this DMVPN (nhrp) command? I need a better mental picture than the Cisco explanation. ;-)
Here is the Cisco explanation that I found.
Thanks for any help with this.
Specifying the NHRP Responder Address
If an NHRP requester wants to know which Next
Hop Server generates an NHRP reply packet, it can request that
information by including the responder address option in its NHRP
request packet. The Next Hop Server that generates the NHRP reply packet
then complies by inserting its own IP address in the NHRP reply. The
Next Hop Server uses the primary IP address of the specified interface.
To specify which interface the Next Hop Server
uses for the NHRP responder IP address, use the following command in
interface configuration mode:
Router(config-if)# ip nhrp responder type number
Specifies which interface the Next Hop Server uses to determine the NHRP responder address.
If an NHRP reply packet being forwarded by a
Next Hop Server contains the IP address of that server, the Next Hop
Server generates an error indication of type "NHRP Loop Detected" and
discards the reply.