z/OS Communications Server: IP Messages Volume 4 (EZZ, SNM)
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EZZ7918I

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

EZZ7918I
No FSM match, ipversion OSPF, neighbor neighbor, state state, event event

Explanation

The specified event was generated for the specified neighbor, which is currently in the specified state. This was not anticipated by the neighbor Finite State Machine. Also, this message often occurs after OMPROUTE is stopped and restarted in the dead router interval seconds.

ipversion is the IP version that OSPF is running. Possible values for ipversion are:
  • IPv6 — OSPF for IPv6
  • IPv4 — OSPF for IPv4

neighbor is the neighboring OSPF router. If ipversion is IPv4, it is the neighbor's interface address on the common network. If ipversion is IPv6, it is the neighbor's OSPF router ID.

state is the Neighbor State Code. The Neighbor State Codes are described in RFC 2328. See Related protocol specifications for directions to get a copy of the RFC. The Neighbor State Codes can be one of the following:
1
Down
2
Attempt
4
Init
8
2-way
16
ExStart
32
Exchange
64
Loading
128
Full
event is the Neighbor Event Code. The Neighbor Event Codes are described in RFC 2328. See Related protocol specifications for directions to get a copy of the RFC. The Neighbor Event Codes can be one of the following:
1
HelloReceived
2
Start
3
2-WayReceived
4
AdjOK?
5
NegotiationDone
6
ExchangeDone
7
SeqNumberMismatch
8
BadLSReq
9
LoadingDone
10
1-way
11
KillNbr
12
InactivityTimer
13
LLDown
14
AdjStart. This state is not described in RFC2328. Bidirectional communication was established with the neighbor and this is a neighbor with whom an adjacency should be established.
15
NoProg. This state is not described in RFC2328. This indicates that adjacency establishment with the neighbor failed to complete in a reasonable time period (Dead_Router_Interval seconds). Adjacency establishment restarts.
16
MaxAdj. This event is not described in RFC2328. This indicates that OMPROUTE has exceeded the futile neighbor state loop threshold (DR_Max_Adj_Attempt). Even if a redundant parallel interface (primary or backup) exists, OMPROUTE continues to attempt to establish adjacency with the same neighboring designated router over the existing or alternate interface.

See the network design considerations with z/OS® Communications Server information in z/OS Communications Server: IP Configuration Guide for more information about futile neighbor state loops.

System action

The event is ignored.

Operator response

Contact the system programmer.

System programmer response

Possible internal error. Collect a dump of OMPROUTE and an OMPROUTE debug trace and contact the IBM® software support center.

Module

SPFNBR, EZA6RSPB

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