Cisco 11503 - CSS Content Services Switch Administration Manual page 159

Chapter 4 Using the CSS Logging Features
Table 4-8
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
OL-5647-02
Cisco 11500 Series CSS Log Messages (continued)
Cisco Content Services Switch Administration Guide
Frequently Queried Log Messages
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)
<--- 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.
4-39