z/OS Communications Server: IP Messages Volume 4 (EZZ, SNM)
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EZZ7923I

z/OS Communications Server: IP Messages Volume 4 (EZZ, SNM)
SC27-3657-01

EZZ7923I
from neighbor, LS advertisement checksum fails: LS type type id destination org source

Explanation

A link state advertisement was received from the specified neighbor. The advertisement is identified by its LS type, ID, and originator. The checksum value contained in the advertisement is incorrect.

In the message text:
neighbor
The IP address of the neighboring OSPF router.
type
The link state advertisement type.
Possible values in an IPv4 link state advertisement (LSA) are:
1
Router-LSA
2
Network-LSA
3
Summary-LSA (IP network)
4
Summary-LSA (ASBR)
5
AS-external-LSA
Possible values in an IPv6 LSA are:
2001
Router-LSA
2002
Network-LSA
2003
Inter-Area-Prefix-LSA
2004
Inter-Area-Router-LSA
4005
AS-External-LSA
0008
Link-LSA
2009
Intra-Area-Prefix-LSA
destination
The link state ID value. This value identifies the portion of the internet environment that is being described by the LSA. The contents of this field depend on the type value. For more information on this value, see RFC 2328 for IPv4 OSPF and RFC 2740 for IPv6 OSPF.
source
The router ID of the originator of the advertisement.

System action

The LSA is discarded.

Operator response

Contact the system programmer.

System programmer response

Contact the manufacturer of the OSPF application on the source router to report the problem. For additional information, including instructions on gathering documentation, see diagnosing OMPROUTE problems in z/OS Communications Server: IP Diagnosis Guide.

Module

SPFLOOD, EZA6RSPL

Example

EZZ7923I FROM 10.2.3.4, LS ADVERTISMENT CHECKSUM FAILS: LS TYPE 1 ID 5 ORG 10.2.3.1

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