I have a SUN environment running an WebLogic that communicates w/a 3rd party running IIS. When the IIS site goes down (frequently), I am stuck with sockets in an ESTABLISHED state, and cannot seem to figure out how to avoid this. No exceptions are thrown as I can still open connections to the IIS... (1 Reply)
Hi All,
On a solaris box A port B
in which port B is established and receiving data.
My question is how do i listen on that established port ,
how can i get the data received at box A: port B through my application
I had searched the forum for the same, but i am unable to retrieve the... (5 Replies)
Hi,
I have a few questions.
There is a CORBA connection between 2 HP-UX 11.11i hosts.
Then the LAN of the 2nd host is pulled.
On the 1st host all connections disappear, as expected.
But on the 2nd host all connections still are present, as established.
With lsof one can see that the... (2 Replies)
Hello,
Actually there are some bugs in application which does not close the TCP connection to other server though CORBA.
We need to kill that ESTABLISHED connections as new connection are not happeneing as the allocated ports were used and showing as ESTABLISHED
Is there any... (4 Replies)
I'm not to sure how to go about this questions, so I will just ask it and then get criticized. How many Established connections should a V440 be able to support? (4 Replies)
HI
I know that it sounds crazy :eek:
appreciated if any one provided me a solution for my below case , the below script is checking the Database availability on many servers by establishing rsh session ( one by one ) , sometime one of the servers goes down and while this the script taking... (0 Replies)
Hi Friends,
On one of my server which having direct connection to internet without firewall ..am seeing a established connection with SSH .. am not getting how ..there no login but I can see this established connection .
## have hidden original IPs with below notations for security concerns .... (0 Replies)
I'm trying to configure a firewall for AIX to accept incoming connections on ports 22 and 443 and deny everything else. All is ok; the server accepts connections only on 22 and 443, but after that I also need to accept all outgoing connections -- ssh and telnet, for example. So I started with
... (0 Replies)
Good morning, I need your help please
After Restarting Aps or connection, these are connections
tcp 0 0 10.80.1.26.57597 10.81.248.79.53008 ESTABLISHED
tcp 0 47 10.80.1.26.57607 10.81.248.79.53008 ESTABLISHED
tcp 0 0 ... (4 Replies)
Discussion started by: alexcol
4 Replies
LEARN ABOUT POSIX
ip-tcp_metrics
IP-TCP_METRICS(8) Linux IP-TCP_METRICS(8)NAME
ip-tcp_metrics - management for TCP Metrics
SYNOPSIS
ip [ OPTIONS ] tcp_metrics { COMMAND | help }
ip tcp_metrics { show | flush } SELECTOR
ip tcp_metrics delete [ address ] ADDRESS
SELECTOR := [ [ address ] PREFIX ]
DESCRIPTION
ip tcp_metrics is used to manipulate entries in the kernel that keep TCP information for IPv4 and IPv6 destinations. The entries are cre-
ated when TCP sockets want to share information for destinations and are stored in a cache keyed by the destination address. The saved
information may include values for metrics (initially obtained from routes), recent TSVAL for TIME-WAIT recycling purposes, state for the
Fast Open feature, etc. For performance reasons the cache can not grow above configured limit and the older entries are replaced with
fresh information, sometimes reclaimed and used for new destinations. The kernel never removes entries, they can be flushed only with this
tool.
ip tcp_metrics show - show cached entries
address PREFIX (default)
IPv4/IPv6 prefix or address. If no prefix is provided all entries are shown.
The output may contain the following information:
age <S.MMM>sec - time after the entry was created, reset or updated with metrics from sockets. The entry is reset and refreshed on use with
metrics from route if the metrics are not updated in last hour. Not all cached values reset the age on update.
cwnd <N> - CWND metric value
fo_cookie <HEX-STRING> - Cookie value received in SYN-ACK to be used by Fast Open for next SYNs
fo_mss <N> - MSS value received in SYN-ACK to be used by Fast Open for next SYNs
fo_syn_drops <N>/<S.MMM>sec ago - Number of drops of initial outgoing Fast Open SYNs with data detected by monitoring the received SYN-ACK
after SYN retransmission. The seconds show the time after last SYN drop and together with the drop count can be used to disable Fast Open
for some time.
reordering <N> - Reordering metric value
rtt <N>us - RTT metric value
rttvar <N>us - RTTVAR metric value
ssthresh <SSTHRESH> - SSTHRESH metric value
tw_ts <TSVAL>/<SEC>sec ago - recent TSVAL and the seconds after saving it into TIME-WAIT socket
ip tcp_metrics delete - delete single entry
address ADDRESS (default)
IPv4/IPv6 address. The address is a required argument.
ip tcp_metrics flush - flush entries
This command flushes the entries selected by some criteria.
This command has the same arguments as show.
EXAMPLES
ip tcp_metrics show address 192.168.0.0/24
Shows the entries for destinations from subnet
ip tcp_metrics show 192.168.0.0/24
The same but address keyword is optional
ip tcp_metrics
Show all is the default action
ip tcp_metrics delete 192.168.0.1
Removes the entry for 192.168.0.1 from cache.
ip tcp_metrics flush 192.168.0.0/24
Removes entries for destinations from subnet
ip tcp_metrics flush all
Removes all entries from cache
ip -6 tcp_metrics flush all
Removes all IPv6 entries from cache keeping the IPv4 entries.
SEE ALSO ip(8)AUTHOR
Original Manpage by Julian Anastasov <ja@ssi.bg>
iproute2 23 Aug 2012 IP-TCP_METRICS(8)