Network Error No Buffer Space Available
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Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top Network Error: no buffer space available up vote 11 down vote favorite 2 After some time of running fine, one of our Windows XP SP3 machines does not open some(!) new TCP/IP connections anymore. Putty says Network Error: no buffer space available, IE no buffer space available maximum connections reached won't open any new connections but e.g. network drive mappings still work, even new ones can be established. netstat does not show more open connections that usual, ping and DNS lookups work fine. Any hints? networking windows-xp socket share|improve this question edited Jun 12 '12 at 5:18 mgorven 22.3k43790 asked Apr 13 '10 at 13:14 braindump 128118 Google photo backups was the culprit in my case. Killed that process and the problem was immediately resolved. –davidparks21 Oct 19 '15 at 19:03 add a comment| 5 Answers 5 active oldest votes up vote 3 down vote This can happen because of just about any piece of software that incorrectly holds network buffers without releasing them. It just happened to me in Win7 64bit. Chrome and Firefox stopped being able to connect to any web pages, windows file sharing stopped working, and WinSCP and PuTTY both gave errors that included the words No buffer space available. Oddly, Ubuntu 10 running under VirtualBox seemed to have no problem making new network connections - maybe it holds a number of network buffers in reserv
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route to the target network (or no https://doc.pfsense.org/index.php/No_buffer_space_available default route) Missing link route for a local target Stale state in pf sending the connection out an invalid path (reset states) Network http://rwatsh.blogspot.com/2012/04/resolution-for-no-buffer-space.html memory buffer exhaustion - See Tuning and Troubleshooting Network Cards Faulty NIC and/or driver issue Sometimes resetting the NIC can bring it back no buffer again: # ifconfig em3 down; ifconfig em3 up Faulty cable Traffic shaping (ALTQ or Limiters) dropping the packet Virtual NIC being disconnected/disabled in certain hypervisors An otherwise overloaded NIC exhausting its send/recv buffers Other various switch/buffer/connectivity issues Trying to bounce the NIC with ifconfig is the easiest no buffer space thing to try first. After that, save/apply the interface settings on each interface (or at least WANs and the LAN in question). Check/(re)set the default route if it has been lost. Reset States. Replacing the cable may also help. Removing traffic shaping if it is enabled is also a good test. Otherwise investigate the traffic on the NIC and look for other buffer-related causes. Seek help from pfSense Commercial Support for assistance in diagnosing the issue, or post on the forum/mailing list. Retrieved from "https://doc.pfsense.org/index.php?title=No_buffer_space_available&oldid=6822" Category: FAQ Navigation menu Personal tools Log in Namespaces Page Discussion Variants Views Read View source View history More Search Navigation Main PageNew articlesRecent changesAvailable categoriesRandom pageHelp Tools What links hereRelated changesSpecial pagesPrintable versionPermanent linkPage information This page was last modified on 2 January 2015, at 13:52. Privacy policy About PFSenseDocs Disclaimers
connections reached?): JVM_Bind" issue I hit this issue recently which occurred on only one windows 7 host. The error was caused by this hard to guess reason (http://support.microsoft.com/kb/196271). The default number of ephemeral TCP ports is 5000. Sometimes this number may become less if the server has too many active client connections due to which the ephemeral TCP ports are all used up and in this case no more can be allocated to a new client connection request resulting in the below issue (for a Java application): Caused by: java.net.SocketException: No buffer space available (maximum connections reached?): JVM_Bind at java.net.PlainSocketImpl.socketBind(Native Method) at java.net.PlainSocketImpl.bind(PlainSocketImpl.java:365) at java.net.Socket.bind(Socket.java:577) at com.sun.net.ssl.internal.ssl.BaseSSLSocketImpl.bind(BaseSSLSocketImpl.java:95) at com.sun.net.ssl.internal.ssl.SSLSocketImpl.bind(SSLSocketImpl.java:45) at com.sun.net.ssl.internal.ssl.SSLSocketImpl.