Catalyst 4500 listening on TCP 6154 on all interfaces

Mon May 7 17:55:07 UTC 2018

reading this - just wondering....do you use the SmartCall home service?  I
wonder if that's what is using this.

try this:

no service smart-call-home and see if that disables it...

just a thought

On Thu, May 3, 2018 at 12:51 AM, frederic.jutzet at sig-telecom.net <
frederic.jutzet at sig-telecom.net> wrote:

> Hi,
>
> We have Cat 4500 series on SUP7L-E with IOS/XE 03.06.02.E/152(2).E2
> which have TCP port 6154 listening on all interfaces.
>
> Any idea what it could be ?
>
> #show tcp brief all
> TCB       Local Address               Foreign Address             (state)
> ...
> 5A529430  0.0.0.0.6154        <<<<<<<<<<<<<<<<
>
>
> #show tcp tcb 5A529430
> Connection state is LISTEN, I/O status: 1, unread input bytes: 0
> Connection is ECN Disabled, Mininum incoming TTL 0, Outgoing TTL 255
> Local host: 0.0.0.0, Local port: 6154
> Foreign host: UNKNOWN, Foreign port: 0
> Connection tableid (VRF): 1
> Maximum output segment queue size: 50
>
> Enqueued packets for retransmit: 0, input: 0  mis-ordered: 0 (0 bytes)
>
> Event Timers (current time is 0xF58354):
> Timer          Starts    Wakeups            Next
> Retrans             0          0             0x0
> TimeWait            0          0             0x0
> AckHold             0          0             0x0
> SendWnd             0          0             0x0
> KeepAlive           0          0             0x0
> GiveUp              0          0             0x0
> PmtuAger            0          0             0x0
> DeadWait            0          0             0x0
> Linger              0          0             0x0
> ProcessQ            0          0             0x0
>
> iss:          0  snduna:          0  sndnxt:          0
> irs:          0  rcvnxt:          0
>
> sndwnd:      0  scale:      0  maxrcvwnd:   4128
> rcvwnd:   4128  scale:      0  delrcvwnd:      0
>
> SRTT: 0 ms, RTTO: 2000 ms, RTV: 2000 ms, KRTT: 0 ms
> minRTT: 60000 ms, maxRTT: 0 ms, ACK hold: 200 ms
> uptime: 0 ms, Sent idletime: 0 ms, Receive idletime: 0 ms
> Status Flags: gen tcbs
> Option Flags: VRF id set, keepalive running, nagle, Reuse local address
>   Retrans timeout
> IP Precedence value : 0
>
> Datagrams (max data segment is 516 bytes):
> Rcvd: 0 (out of order: 0), with data: 0, total data bytes: 0
> Sent: 0 (retransmit: 0, fastretransmit: 0, partialack: 0, Second
> Congestion: 0), with data: 0, total data bytes: 0
>
>  Packets received in fast path: 0, fast processed: 0, slow path: 0
>  fast lock acquisition failures: 0, slow path: 0
> TCP Semaphore      0x5BEB9B10  FREE
>
>
>
>
>
> (The command "show control-plane host open-ports" is not available on
> this platform/code)
>
>
>
> I also think that if it would be a local socket for internal process
> communication, it would be 127.0.0.1:6154 instead of 0.0.0.0:6154.
> So this is listening on all interfaces, virtuals and physicals and seam
> not to be for internal internal process communication.
>
>
> Fred
>

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