Cabletron Systems SSIM-A8-01 Spezifikationen Seite 106

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Seitenansicht 105
APPN Views
APPN Application
9-26
Miscellaneous Applications
Curr Num Nodes The number of nodes currently in this node’s topology database. If this value
exceeds the maximum number of nodes allowed (the value in Max Num
Nodes), APPN issues the CPDB002 alert.
Total TDUs In The number of TDUs received from all adjacent network nodes since the last
initialization.
Total TDUs Out The number of TDUs built by this node to be sent to all adjacent network
nodes since the last initialization.
Tot Low RSNs Rxd The number of topology node updates received by this node with an RSN
(Resource Sequence Number) less than the current RSN. Both even and odd
RSNs are included. These TDUs are not errors, but result when TDUs are
broadcast to all adjacent network nodes. This node’s topology database is not
updated, but the node sends a TDU with it’s higher RSN to the adjacent
node that sent this low RSN.
Tot Equ RSNs Rxd The number of topology node updates received by this node with an RSN
equal to the current RSN. Both even and odd RSNs are included. These
TDUs are not errors, but result when TDUs are broadcast to all adjacent
network nodes. This node’s topology database is not updated.
Good High RSNs Rxd The number of topology node updates received by this node with an RSN
greater than the current RSN. This node’s topology database is updated and
the node broadcasts a TDU to all adjacent network nodes.
Bad High RSNs Rxd The number of topology node updates received by this node with an odd RSN
greater than the current RSN. These updates represent a topology
inconsistency detected by one of the APPN network nodes. This node’s
topology database is updated and the node broadcasts a TDU to all adjacent
network nodes.
Num State Updates The number of topology node records built as a result of internally detected
node state changes that affect APPN topology and routing. Updates are sent
via TDUs to all adjacent nodes.
Record Errors The number of topology node record inconsistencies detected by this node.
This occurs when the node attempts to update its topology database and
detects a data inconsistency. The node then creates a TDU with the current
RSN incremented to the next odd number and broadcasts it to all adjacent
network nodes.
APPN Global Topology View (Continued)
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