| Title: | FDDI - The Next Generation |
| Moderator: | NETCAD::STEFANI |
| Created: | Thu Apr 27 1989 |
| Last Modified: | Thu Jun 05 1997 |
| Last Successful Update: | Fri Jun 06 1997 |
| Number of topics: | 2259 |
| Total number of notes: | 8590 |
A customer has a question on counter on a decbridge 610.
what he sees is as follows:
Counter Creation Time = 4-JUN-1993 16:58:48.20
Port Restarts = 1
Total Frames Received = 136758926 Frames
Total Bytes Received = 45261327408 Bytes
Device Frames Received = 243 Frames
Device Bytes Received = 15552 Bytes
Multicast Frames Received = 3489347 Frames
Multicast Bytes Received = 472510352 Bytes
Total Frames Sent = 16679304 Frames
Total Bytes Sent = 2147220629 Bytes
Device Frames Sent = 557428 Frames
Device Bytes Sent = 38457425 Bytes
Multicast Frames Sent = 1121516 Frames
Multicast Bytes Sent = 85682647 Bytes
Bad Frames Received = 2469 Frames
Transmit Frames Lost = 0 Frames
Lifetime Exceeded Frames = 0 Frames
Receive Frames Lost = 0 Frames
Frames Filtered = 116531569 Frames
Bytes Filtered = 42221370762 Bytes
Receive Overruns = 0 Frames
Forwarding State Entered = 1
Invalid Device Messages = 0 Frames
Bad Hellos Limit Exceeded = 0
Multicast Frames Filtered = 0 Frames
Multicast Device Frames Received = 243 Frames
Multicast Device Frames Sent = 557428 Frames
Device Frames Lost = 0 Frames
Transmit Error Frames = 4 Frames
Bad Bytes Received = 1582608 Bytes
Multicast Source Frames Received = 0 Frames
Transmit Error Bytes = 391742 Bytes
Invalid Device Bytes = 0 Bytes
Multicast Device Bytes Received = 15552 Bytes
Multicast Device Bytes Sent = 38457425 Bytes
Oversize Frames = 41 Frames
Framing Errors = 1167
Transmit Multiple Collisions = 157395
Carrier Lost = 0
Collision Limit Exceeded = 3
Unknown Destination Addresses Received = 991
Frames Addressed Filtered = 116531569 Frames
Bytes Addressed Filtered = 0 Bytes
Bytes Protocol Filtered = 0 Bytes
Collision Presence Test Failed = 14
Length Error = 0
Our questions are:
1. The "Collision Presence Test Failed" counter is non-zero, but we
have COLLISION PRESENCE TEST is set to FALSE. How can this be:
2. Examining the following counters:
Transmit Error Frames = 4 Frames
Transmit Error Bytes = 391742 Bytes
Since the max Ethernet frame is 1541 bytes, the max number of bad
bytes should be 4*1541 = 6140. Why are the numbers so different?
3. What are the following counters actually indicating?
Receive Overruns = 0 Frames
Oversize Frames = 41 Frames
from the decmcc V1.3 Bridge Module use:
Receive Overruns - Number of frames received that were larger than
the bridge's internal buffer size (illegal Ethernet size).
Oversize Frames - Number of oversized frames that were received
on this line.
To me it seems that these 2 counters are almost the same, but for
the life of me I cannot determine the difference.
Cross posted in FDDI and MCC notes conferences.
Steve Woestemeyer
CSC/CS - Network Support Team
| T.R | Title | User | Personal Name | Date | Lines |
|---|---|---|---|---|---|
| 993.1 | QUIVER::WALTER | Mon Jun 14 1993 09:42 | 12 | ||
Numbers 1 and 2 appear to be bugs. I'll send a message off to the
support engineer. What version of firmware is this bridge running?
The third one looks like a misleading description in the manual.
Oversize Frames refers to packets that exceed maximum Enet size.
Receive Overrun is a LANCE silo error, which occurs when the LANCE
can't transfer data to buffer memory fast enough.
Dave
| |||||
| 993.2 | 4 DB610's @ V1.3 | BWTEAL::WOESTEMEYER | Why??...Why not!!! | Tue Jun 15 1993 14:54 | 6 |
Dave,
The customer has 4 DB610's, all of them are at V1.3.
Thanks for your input,
Steve
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