How to resolve "max_conn_overload" alarm from WAE-674 in WCCP mode?
I have a WAVE-574 and a WAE-674 showing the minor alarm "max_conn_overload: The TFO accelerator is overloaded (connection limit)". Both are running WCCP redirection.
From CM GUI > Dashboard > Device > Monitor > Traffic Analysis > Connection Statistics, one device showed 175 connections and the other showed 864 connections. The alarm seems to say there's a limit of # of connections the TFO accerelator can handle. But how can I find the limit on the device? Is it configurable? What is the best practice to resolve this overload?
I have searched Cisco web sites for possible explanations, but couldn't find any.
Re: How to resolve "max_conn_overload" alarm from WAE-674 in WCC
Thanks for the info. The TFO overload alarm was found on WCCP WAE and also Inline mode WAE. So probably not the routing loop issue. I looked at TFO stats, but not sure what numbers are good indications.
Can you take a look at the stats from the WCCP WAE-674?
Thanks a lot
WAE674-WCCP#sh stat tfo detail
Total number of connections : 10173
No. of active connections : 31
No. of pending (to be accepted) connections : 0
No. of bypass connections : 2216
No. of normal closed conns : 9587
No. of reset connections : 555
Socket write failure : 174
Socket read failure : 0
WAN socket close while waiting to write : 0
AO socket close while waiting to write : 0
WAN socket error close while waiting to read : 0
AO socket error close while waiting to read : 197
DRE decode failure : 0
DRE encode failure : 0
Connection init failure : 43
WAN socket unexpected close while waiting to read : 30
Exceeded maximum number of supported connections : 0
Buffer allocation or manipulation failed : 0
Peer received reset from end host : 106
DRE connection state out of sync : 0
Memory allocation failed for buffer heads : 0
Unoptimized packet received on optimized side : 5
Data buffer usages:
Used size: 0 B, B-size: 0 B, B-num: 0
Cloned size: 234 KB, B-size: 337 KB, B-num: 1230
Queue Size: IO: 0, Semi-IO: 0, Non-IO: 0
Total Jobs: IO: 243894, Semi-IO: 215419, Non-IO: 29919
Policy Engine Statistics
Session timeouts: 0, Total timeouts: 0
Last keepalive received 00.1 Secs ago
Last registration occurred 7:22:30:06.9 Days:Hours:Mins:Secs ago
Hits: 4101731, Update Released: 67270
Active Connections: 2018, Completed Connections: 22638
Rejected Connection Counts Due To: (Total: 4010359)
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