Refer to the following output:
Router#show ip nhrp detail
10.1.1.2/8 via 10.2.1.2, Tunnel1 created 00:00:12, expire 01:59:47
TypE. dynamic, Flags: authoritative unique nat registered used
NBMA address: 10.12.1.2
What does the authoritative flag mean in regards to the NHRP information? slot: 0, conn id: 3442, flow_id: 1443, crypto map: test sa timing: remaining key lifetime (k/sec):
A. It was obtained directly from the next-hop server.
B. Data packets are process switches for this mapping entry.
C. NHRP mapping is for networks that are local to this router.
D. The mapping entry was created in response to an NHRP registration request.
E. The NHRP mapping entry cannot be overwritten.
• Flags:
• authoritative–Indicates that the NHRP information was obtained from the Next Hop Server or
router that maintains the NBMA-to-IP address mapping for a particular destination.
• implicit–Indicates that the information was learned from the source mapping information of an
NHRP resolution request received by the local router, or from an NHRP resolution packet being
forwarded through the local router.
• negative–For negative caching; indicatesthat the requested NBMA mapping could not be obtained.
• unique–Indicates that this NHRP mapping entry must be unique; it cannot be overwritten with a
mapping entry that has the same IP address but a different NBMA address.
• registered–Indicates the NHRP mapping entry was created by an NHRP registration request.
• used–Indicates the NHRP mapping was used to forward data packets within the last 60 seconds.
• router–Indicates an NHRP mapping entry that is from a remote router that is providing access to
a network or host behind the remote router.
• local–Indicates an NHRP mapping entry for networks local to this router for which this router has
answered an NHRP resolution request.
• (no socket)–Indicates an NHRP mapping entry for which IPsec socket (for encryption) has not
been triggered. These mapping entries are not used to forward data packets.
• nat–Indicates an NHRP mapping entry for which IPsec socket (for encryption) has not been
triggered. These mapping entries are not used to forward data packets.
• NBMA address–Nonbroadcast multiaccess address. The addressformat is appropriate for the type
of network being used (for example, GRE, Ethernet, SMDS, or multipoint tunnel