Cisco 11503 Administration Guide - Page 159

show mibii, ether-errors, If the CSS handles a content request - slow

Page 159 highlights

Chapter 4 Using the CSS Logging Features Frequently Queried Log Messages Table 4-8 Cisco 11500 Series CSS Log Messages (continued) Log Message (sys.log: Subsystem Name, Level, and Message) FLOWMGR-4: Flow manager received an illegal message with code 255 FLOWMGR-4: Flow manager received an illegal message with code 194 FLOWMGR-6: FM_Tcp: Handling generic FMTCP flow Re-Transmit ERROR FLOWMGR-6: FM_ReTransTimeout: Re-Transmit timeout ERROR FLOWMGR-6: FM_Tcp: Handling generic FMTCP flow Re-Transmit ERROR FLOWMGR-6: FM_ReTransTimeout: Re-Transmit timeout ERROR FLOWMGR-6: FM_Tcp: Handling generic FMTCP flow Re-Transmit ERROR Cause and Resolution One of the CSS Ethernet ports encountered a significant number of errors and a few malformed packets reached the flow manager. The flow manager received an illegal message from the fastpath. This log message may occur due to hardware problems or a port receiving an excessive number of malformed packets. Use the show mibii or show ether-errors command to look for errors on one of the CSS ports. If the CSS handles a content request for a Layer 5 rule that spans more than three TCP packets, after the CSS decides on the server to use, it sends the TCP packets in TCP slow start form. Here is an example of a five-TCP segment content request: Segment 1 --> Segment 2 --> (wait for an ACK) Segment4 -> Segment5 ->

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4-39
Cisco Content Services Switch Administration Guide
OL-5647-02
Chapter 4
Using the CSS Logging Features
Frequently Queried Log Messages
FLOWMGR-4: Flow manager received
an illegal message with code 255
One of the CSS Ethernet ports
encountered a significant number of
errors and a few malformed packets
reached the flow manager.
FLOWMGR-4: Flow manager received
an illegal message with code 194
The flow manager received an illegal
message from the fastpath. This log
message may occur due to hardware
problems or a port receiving an
excessive number of malformed
packets. Use the
show mibii
or
show
ether-errors
command to look for
errors on one of the CSS ports.
FLOWMGR-6: FM_Tcp: Handling
generic FMTCP flow Re-Transmit
ERROR
FLOWMGR-6: FM_ReTransTimeout:
Re-Transmit timeout ERROR
FLOWMGR-6: FM_Tcp: Handling
generic FMTCP flow Re-Transmit
ERROR
FLOWMGR-6: FM_ReTransTimeout:
Re-Transmit timeout ERROR
FLOWMGR-6: FM_Tcp: Handling
generic FMTCP flow Re-Transmit
ERROR
If the CSS handles a content request
for a Layer 5 rule that spans more than
three TCP packets, after the CSS
decides on the server to use, it sends
the TCP packets in TCP slow start
form. Here is an example of a five-TCP
segment content request:
Segment 1 -->
Segment 2 -->
(wait for an ACK)
<--- ACK
Segment3 ->
Segment4 ->
Segment5 ->
<-- Content
If the CSS does not receive an ACK
from the server within three seconds, it
will refuse any remaining packets and
terminate the connection with a reset.
At that point, the log message is
generated.
Table 4-8
Cisco 11500 Series CSS Log Messages (continued)
Log Message (sys.log: Subsystem
Name, Level, and Message)
Cause and Resolution