This chapter describes Neighbor Discovery Protocol for IPv6 (NDP6) messages. For information on message content and how to use the message, refer to the Introduction.
| NDP6.001 |
Level: P-TRACE
Short Syntax: NDP6.001 unknown dest protocol address net network ID
Long Syntax: NDP6.001 Unknown destination protocol address net network ID
Description: This message is generated when a Neighbor Discovery request specifies an unknown protocol address (i.e. request not for this router).
Cause: Neighbor Discovery request for a host on this network that is not for this router.
Action: None needed. The request is dropped.
| NDP6.002 |
Level: UI-ERROR
Short Syntax: NDP6.002 Send request failed reason reason_code net network ID
Long Syntax: NDP6.002 Transmission of request failed for reason reason_code net network ID
Description: An outgoing Neighbor Discovery request packet was dropped as the result of some problem in the router. The reason code gives the cause.
Cause: Miscellaneous handler error. (Reason code 1.)
Action: Check for error messages from handler for network_name.
Cause: Output queue overflow, or other flow control. (Reason code 2.)
Action: Alleviate congestion.
Cause: Network down. (Reason code 3.)
Action: See why handler thinks network is down.
Cause: Dropped by handler to avoid looping, or bad broadcast. (Reason code 4.)
Action: Check configuration.
Cause: Host down. (Reason code 5.)
Action: See why handler thinks host is down.
| NDP6.003 |
Level: U-INFO
Short Syntax: NDP6.003 Unknown hdwe space hardware_address_space net network ID
Long Syntax: NDP6.003 Unknown hardware space hardware_address_space net network ID
Description: An incoming Neighbor Discovery packet was received on a network which is not using Neighbor Discovery for address translation in any protocol.
Cause: The gateway is misconfigured.
Action: Correct the configuration.
Cause: A protocol is in use on that network which requires the use of the Neighbor Discovery protocol, but the router does not support that protocol.
Action: None.
| NDP6.004 |
Level: UI-ERROR
Short Syntax: NDP6.004 recv: No mem for cache entry, prot protocol_type net network ID
Long Syntax: NDP6.004 receive: No memory for cache entry, protocol protocol_type net network ID
Description: During the input processing of a Neighbor Discovery packet, the router did not have memory available to make a Neighbor cache entry for the given protocol.
Cause: The router is extremely low on heap memory.
Action: Find some way to reduce memory usage.
| NDP6.005 |
Level: P-TRACE
Short Syntax: NDP6.005 Unknown protocol type protocol_type net network ID
Long Syntax: NDP6.005 Unknown protocol type protocol_type net network ID
Description: An incoming Neighbor Discovery packet was received for a protocol that is not using the Neighbor Discovery protocol for address translation.
Cause: The gateway is misconfigured.
Action: Correct the configuration.
Cause: A protocol is in use on that network which requires the use of Neighbor Discovery, but the router does not support that protocol.
Action: None.
| NDP6.006 |
Level: C-INFO
Short Syntax: NDP6.006 NDP6 init
Long Syntax: NDP6.006 Neighbor Discovery initialization
Description: This message is printed when Neighbor Discovery is initializing.
| NDP6.007 |
Level: C-TRACE
Short Syntax: NDP6.007 New cache entry hardware_address_space protocol_type net network ID
Long Syntax: NDP6.007 New neighbor cache entry hardware_address_space protocol_type net network ID
Description: An incoming Neighbor Discovery packet addressed to this host contained a mapping which was not in the neighbor cache. A new cache entry was filled in with the information in the packet.
| NDP6.008 |
Level: UI-ERROR
Short Syntax: NDP6.008 NDP unable to get memory
Long Syntax: NDP6.008 Neighbor Discovery Protocol unable to get memory
Description: Neighbor Discovery was unable to allocate the necessary memory. Neighbor Discovery is unable to run because of this.
Cause: There is a shortage in heap memory, possibly because too many memory intensive forwarders/protocols are running.
Action: Disable unnecesary forwarders/protocols or get more memory.
| NDP6.009 |
Level: C-TRACE
Short Syntax: NDP6.009 Sending NA source_IP_address destination_IP_address net network ID
Long Syntax: NDP6.009 Neighbor Advertisement packet sent from source_IP_address to destination_IP_address net network ID
Description: An ICMP6 Neighbor Advertisement is being sent as the result of a request for a translation from another host.
| NDP6.010 |
Level: U-INFO
Short Syntax: NDP6.010 Dropping RA source_IP_address -> destination_IP_address net network ID
Long Syntax: NDP6.010 Dropping router advertisement request packet received from source_IP_address to destination_IP_address net network ID
Description: A Router Advertisement Request was received from the source router by this router. The request is dropped because router advertisements from other routers are ignored.
| NDP6.011 |
Level: U-INFO
Short Syntax: NDP6.011 Dropping Redirect source_IP_address -> destination_IP_address net network ID
Long Syntax: NDP6.011 Dropping redirect packet received from source_IP_address to destination_IP_address net network ID
Description: A Redirect message was received from the source router by this router. The redirect is dropped because the router should depend on routing protocol, then redirect message.
| NDP6.012 |
Level: UI-ERROR
Short Syntax: NDP6.012 No iorb for send net network ID
Long Syntax: NDP6.012 No buffer for send request packet net network ID
Description: An outgoing reply packet was dropped as the result of a lack of buffers in the router.
Cause: There are many potential causes of this problem; temporary overloads, etc.
Action: Consult logging output from the rest of the router for more information. If the problem persists, contact Customer Service.
| NDP6.013 |
Level: C-TRACE
Short Syntax: NDP6.013 Sending RA source_IP_address destination_IP_address net network ID life
Long Syntax: NDP6.013 Router Advertisement packet sent from source_IP_address to destination_IP_address net network ID life
Description: An ICMP6 Router Advertisement is being sent for one of the following reasons: 1. Periodic router advertisment. 2. Response to a router solicitation. 3. Notification that the router or interface is going down by advertising a router lifetime of zero.
| NDP6.014 |
Level: C-INFO
Short Syntax: NDP6.014 Sending redirect source_IP_address -> destination_IP_address to new_next_hop_IP_address
Long Syntax: NDP6.014 Sending redirect for packet from source_IP_address to destination_IP_address to use router new_next_hop_IP_address
Description: The router is sending an ICMP6 Redirect, advising a source host on a directly connected network that there is a better first hop router for this traffic.
| NDP6.015 |
Level: U-INFO
Short Syntax: NDP6.015 Dropping NS source_IP_address -> destination_IP_address
Long Syntax: NDP6.015 Dropping neighbor solicitation packet received from source_IP_address to destination_IP_address
Description: An ICMP6 Neighbor Solicitation was received from the source host by the router. The request is dropped because ICMP6 packet validity failed.
| NDP6.016 |
Level: C-INFO
Short Syntax: NDP6.016 NS received source_IP_address -> destination_IP_address
Long Syntax: NDP6.016 Neighbor Solicitation request packet received from source_IP_address to destination_IP_address
Description: An ICMP6 Neighbor Solicitation Request was received from the source host by the router.
| NDP6.017 |
Level: U-INFO
Short Syntax: NDP6.017 Dropping NA source_IP_address -> destination_IP_address
Long Syntax: NDP6.017 Dropping neighbor advertisement packet received from source_IP_address to destination_IP_address
Description: An ICMP6 Neighbor Advertisement was received from the source host by the router. The request is dropped because ICMP6 packet validity failed.
| NDP6.018 |
Level: C-INFO
Short Syntax: NDP6.018 NA received source_IP_address -> destination_IP_address
Long Syntax: NDP6.018 Neighbor Advertise request packet received from source_IP_address to destination_IP_address
Description: An ICMP6 Neighbor Advertisement was received from the source host by the router.
| NDP6.019 |
Level: C-INFO
Short Syntax: NDP6.019 Received RS source_IP_address -> destination_IP_address
Long Syntax: NDP6.019 Router Solicitation packet received from source_IP_address to destination_IP_address
Description: An ICMP6 Router Solicitation was received from the source host by the router.
| NDP6.020 |
Level: U-INFO
Short Syntax: NDP6.020 Dropping RS source_IP_address -> destination_IP_address
Long Syntax: NDP6.020 Dropping Router Solicitation packet received from source_IP_address to destination_IP_address
Description: An ICMP6 Router Solicitation was received from the source host by the router. The request is dropped because ICMP6 packet validity failed.
| NDP6.021 |
Level: UE-ERROR
Short Syntax: NDP6.021 Dropping invalid ND_packet_type source_IP_address -> destination_IP_address
Long Syntax: NDP6.021 Invalid neighbor discovery packet ( ND_packet_type) received from source_IP_address to destination_IP_address is dropped
Description: An invalid Neighbor Discovery packet was received from the source host by the router. The packet is dropped.
Cause: The software found the net pointer to be invalid which may be caused by an invalid network configuration.
Action: Check network configuration.
| NDP6.022 |
Level: C-TRACE
Short Syntax: NDP6.022 Sending NS source_IP_address -> destination_IP_address target addr_to_resolve net network ID
Long Syntax: NDP6.022 Neighbor Solicitation packet sent source_IP_address to destination_IP_address target addr_to_resolve net network ID
Description: An ICMP6 Neighbor Solicitation is being sent as the result of a request for a address translation.