Cisco Support Community
Community Member

ACE-TCP RST, ACE initiated RST

Hello members,

What is the command to identify if ACE is initiating TCP RST?

Is there a way to overcome or change timers/window/ect, if ACE do initiate TCP RST?

Thanks in advance members.


Re: ACE-TCP RST, ACE initiated RST

There are some default timeouts e.g. idle tcp sessions 60 minutes. You can change those if desired.

Create a TCP Parameter Map change what you want and apply it globally. If you want to check what happens with a flow you imho need to capture packets in the corresponding context.

Maybe someone else has even better advice.


Cisco Employee

Re: ACE-TCP RST, ACE initiated RST

you can use the following command to see the TCP stats.

show np 1 me-stats "-s tcp"

There are RESET counters.

However, you don't know why the reset was generated and modifying all kind of parameters without knowing the true cause of the RESET is a little bit dangerous.

You should capture a sniffer trace and try to understand the reason of the reset.


Community Member

Re: ACE-TCP RST, ACE initiated RST

Thanks Giles.

Very useful command

show np 1 me-stats "-s tcp"

I'll look at the capture file that was done couple of days ago.

I'm attaching the show output, just collected. Any clues will be appriciated.


switch/001_snippedcus# show np 1 me-stats "-s tcp"

TCP Statistics: (Current)


TCP RX messages received: 0x50bc5841

TCP RX unknown messages: 0

TCP RX racing messages (fin): 6815

TCP RX racing messages (forward): 199102

TCP RX racing messages (conn create): 170

TCP TX messages received: 0x41fa25a8

TCP TX Hi Priority messages received: 14002856

TCP TX unknown messages: 0

TCP TX racing messages (connect): 7

TCP TX racing messages (data): 1884954

TCP TX racing messages (proxy): 8066793

Reproxy message received: 0x073533fd

Data messages received: 0x2a741cdc

TCP connect message received: 0x02639a8a

Ack trigger message received: 3036

Unproxy req. message received: 0x07d7f2ce

Unproxy rsp. message received: 0x07cacdc4

TCP accepted msgs sent: 0x01343370

TCP connected msgs sent: 0x0263408b

Conn_ctrl msgs sent: 5029091

Buffer alloc failed: 0

Invalid msg ring id: 1218

Start retrans timer: 0x1f175a0c

Start ackdelay timer: 0x171d7346

Start persist timer: 300659

Start timewait timer: 0

Delete act timer: 0x16ee4b8f

Delete rtp timer: 0x1e3ee16d

Connections unproxying: 0x07cacfa5

Connections unproxying canceled by TCP: 833690

Connections unproxying canceled by app: 156752

Connections unproxying immediate reproxy 0x0315f058

Connections unproxying flush retransq: 0x07c2788a

Connections unproxying flush inputq: 0x02167109

Connections unproxied: 0x04829af2

Connections reproxied: 0x039a94a0

Drop reproxy msg queue full: 2916

Drop control msg: 7972

Drops due to FastTX queue full: 0

Drops due to Fastpath queue full: 0

Drops due to HTTP queue full: 134145

Drops due to SSL queue full: 0

Drops due to AI queue full: 0

ACK past SEQ: 36504

Unproxy rsp post failed: 207

Drops due to invalid proxy id: 0

(Context ALL Statistics)

Handshakes completed: 0x0395731f

Handshakes failed: 150512

Packets received to app: 0x2ad1fc92

Packets sent to network: 0x57f27343

Segs outside window: 524277

Dup ACKs received: 0

Dup ACK limit met: 0

Malformed TCP options: 0

Reassemble segs: 806787

Nagled data segs: 0

Retransmitted data segs: 0x065e16c4

Round-trip timeouts: 10595624

Round-trip timeout limit met: 385691

Persist timeouts: 70351

..... see attachment, as this exceeds char limits

Community Member

Re: ACE-TCP RST, ACE initiated RST

Hi Gilles,

I have a screenshot of a capture and thinking of sharing this in private, if your time permits. Please let me know.



Cisco Employee

Re: ACE-TCP RST, ACE initiated RST

I had a look to your data but can't tell the reason for the resets.

Another command you could collec is

show np 1 me-stat "-s icm"

It will tell us if there was connection time out.

If you need to send me private data, you can do it to

I'll answer only if time allows me to.


Community Member

Re: ACE-TCP RST, ACE initiated RST


Thank you verymuch for this offer. I'll send the details direct to you.

CreatePlease to create content