OpenVMS Cluster Systems - OpenVMS Systems - HP

Troubleshooting the NISCA Protocol
F.11 Filters
F.11.1 Capturing All LAN Retransmissions for a Specific OpenVMS Cluster
Use the values shown in Table F–13 to set up a filter, named LAVc_TR_ReXMT,
for all of the LAN retransmissions for a specific cluster. Fill in the value for the
local area OpenVMS Cluster group code (nn–nn) to isolate a specific OpenVMS
Cluster on the LAN.
Table F–13
Byte
Capturing Retransmissions on the LAN
Number Field Value
1 DESTINATION xx–xx–xx–xx–xx–xx
7 SOURCE xx–xx–xx–xx–xx–xx
13 TYPE 60–07
23 LAVC_GROUP_CODE nn–nn
31 TR FLAGS 0x1xxxxx2
33 ACKING MESSAGE xx–xx
35 SENDING MESSAGE xx–xx
F.11.2 Capturing All LAN Packets for a Specific OpenVMS Cluster
Use the values shown in Table F–14 to filter all of the LAN packets for a specific
cluster. Fill in the value for OpenVMS Cluster group code (nn–nn) to isolate a
specific OpenVMS Cluster on the LAN. The filter is named LAVc_all.
Table F–14
Byte
Capturing All LAN Packets (LAVc_all)
Number Field Value
1 DESTINATION xx–xx–xx–xx–xx–xx
7 SOURCE xx–xx–xx–xx–xx–xx
13 TYPE 60–07
23 LAVC_GROUP_CODE nn–nn
33 ACKING MESSAGE xx–xx
35 SENDING MESSAGE xx–xx
F.11.3 Setting Up the Distributed Enable Filter
Use the values shown in Table F–15 to set up a filter, named Distrib_Enable,
for the distributed enable packet received event. Use this filter to troubleshoot
multiple LAN segments.
Table F–15
Byte
Setting Up a Distributed Enable Filter (Distrib_Enable)
Number Field Value ASCII
1 DESTINATION 01–4C–41–56–63–45 .LAVcE
7 SOURCE xx–xx–xx–xx–xx–xx
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Troubleshooting the NISCA Protocol F–31