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Chapter 4: Statistics
Page 4-4 Token Ring Switch Module User Guide
- Remove Received - The Token Ring port has removed itself from
the ring.
4.2 MODULE STATISTICS
Interface-related statistics are maintained for NMS examination in several
portions of the management information base (MIB). These include the
“if” portion of MIB II, the bridge MIB[5], the 802.5 MIB, and proprietary
MIB entries. The proprietary MIB port statistics are summarized below:
•
sifRxPackets - The number of received packets by category. Each of
the possible 25 categories is the cross-product of the five destination
addresses and the five forwarding outcomes (see Table 4-1).
•
sifRxChar0s - The number of characters in the forwarded received
packets.
• sifRxChar1s - The number of characters in the filtered received
packets.
NOTE
All of the counter values are reset to zeros if the ATX is
rebooted or if the module housing that port is halted and
restarted.
Table 4-1 Destination Addresses and Forwarding Outcomes
Destination Address Forwarding Outcome
1. a bridge management unicast
address
i. packet forwarded
2. a bridge management multicast
address
ii. packet filtered (local traffic)
3. a known non-management
address
iii. packet filtered (port blocked)
4. an unknown non-management
unicast address
iv. packet filtered (source restriction)
5. an unknown non-management
multicast address
v. packet filtered (destination
restriction)