Hello,

You can try:

OPC_RPC_ONLY to TRUE
Set the OPC_RPC_ONLY variable to TRUE by running the following command:
ovconfchg -ns eaagt -set OPC_RPC_ONLY TRUE

docs.microfocus.com/.../12.24
DISABLE_EXPECT_100 bbc.http
The Expect HTTP request header implies expectations to be fulfilled by server for client to continue forward the request. In scenarios, where client plans to send large content in message body, it initially sends request to server with expectation of interim "100 continue" response from the server. This header is useful in environments where there are potential of large request size in the payloads, wherein server can choose to reject request based on the size mentioned in the content-length header. 100 continue status code implies that server intends to receive the request body before acting upon the same and sending the final response.

Setting DISABLE_EXPECT_100 to TRUE helps in avoiding network round trip time caused with 100-continue responses.

It's good to set this value to TRUE in the management server as well as agent.

For management server:
ovconfchg -ns bbc.http -set DISABLE_EXPECT_100 TRUE

ovconfchg -ovrg server -ns bbc.http -set DISABLE_EXPECT_100 TRUE

Thanks.

Dear duncan, 

Thanks for the quick update, 

As i verified, EXPECT_100 is already set to DISABLE on both client and Mgmt server, 

DISABLE_EXPECT_100=true

Also as I checked RPC in client side which is as below: 

OPC_MONA_CONF_RPC_ONLY=TRUE
OPC_RPC_ONLY=TRUE

From Mgmt server side its as below: 

OPC_MONA_CONF_RPC_ONLY=FALSE
OPC_RPC_ONLY=TRUE

As you have mentioned its seems to be issue with the Packets only, because we could see the buffering alert volume is less during the non-business hours and high volume of alerts in the business hours. So suspect some thing related to network.

[bbc.cb]
LOCAL_CONTROL_ONLY=true
LOCAL_INFO_ONLY=true
REQUEST_TIMEOUT=1
RESTRICT_REG=true
SSL_REQUIRED=true

[bbc.fx]
FX_MAX_RETRIES=3

[bbc.http]
LOCAL_INFO_ONLY=false
LOG_SERVER_ACCESS=false
MAX_CONNECTIONS=0
RESPONSE_TIMEOUT=100000
SERVER_PORT=0

[bbc.http.ext.opcmsga]
AUTO_CONNECTION_CLOSE_INTERVAL=60

[bbc.snf]
MAX_FILE_BUFFER_SIZE=0

OPC_BUFLIMIT_SEVERITY=major
OPC_BUFLIMIT_SIZE=10000
OPC_HBP_INTERVAL_ON_AGENT=300
OPC_INSTALLATION_TIME=Mon Apr 29 08:51:24 +03 2024
OPC_INSTALLED_VERSION=12.24.008
OPC_INT_MSG_FLT=TRUE
OPC_IP_ADDRESS=******************
OPC_LE_CMD_WAIT_TIME=500
OPC_MONA_CONF_RPC_ONLY=TRUE
OPC_NODENAME=*************
OPC_NODE_CHARSET=utf8
OPC_PUB_DIR_NOT_WW=true
OPC_RPC_ONLY=TRUE

======================================================

Below is the System.txt error which is logged exactly upon agent moves to buffer state: 

0: INF: Wed May 1 11:55:07 2024: opcmsga (1440323/140067547158336): Exception:: Server config info XML file is empty [ file will be ignored ] or not present itself.
0: INF: Wed May 1 11:55:07 2024: opcmsga (1440323/140067547158336): Server config info xml file is empty or not present, skipping deployment integrity check
0: WRN: Wed May 1 11:59:03 2024: ovbbccb (1440127/139904966231808): (bbc-90) The incoming HTTPS client connection from host 172.24.12.183 failed due to the SSL error:
1: ERR: Wed May 1 11:59:03 2024: ovbbccb (1440127/139904966231808): (xpl-333) recv() on '[DPS:IP]:21195' failed.
2: ERR: Wed May 1 11:59:03 2024: ovbbccb (1440127/139904966231808): (RTL-104) Connection reset by peer
0: WRN: Wed May 1 11:59:03 2024: ovbbccb (1440127/139904970442496): (bbc-90) The incoming HTTPS client connection from host 172.24.12.183 failed due to the SSL error:
1: ERR: Wed May 1 11:59:03 2024: ovbbccb (1440127/139904970442496): (xpl-333) recv() on '[DPS:IP]:23106' failed.
2: ERR: Wed May 1 11:59:03 2024: ovbbccb (1440127/139904970442496): (RTL-104) Connection reset by peer

=======================================================================

Hello,

Thanks for letting me know.  The RTL-104 is your usual "104 Connection reset by peer" error.  If it works most of the time, then yes, it may be a networking issue of some sort.  I really don't know and cannot comment any further...

Best of luck.