Re: DCE - RPC Communication Breaks on Redhat 9.0

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The problem got fixed with  glibc version  2.3.2-27.9.7
 
Thanks,
Vaibhav Khanduja
 
<bug_linux@xxxxxxxxx> wrote:
Hi All,
 
I have done some more investigation on this and have reached to a conclusion that rpcd daemon running on port 135 is being contacted through UDP communication but somehow it is not able to receive it.
 
netstat -a returs
 
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address           Foreign Address         State
tcp        0      0 localhost.localdo:32769 *:*                     LISTEN
tcp        0      0 *:shell                 *:*                     LISTEN
tcp        0      0 *:135                   *:*                     LISTEN
tcp        0      0 *:sunrpc                *:*                     LISTEN
tcp        0      0 *:x11                   *:*                     LISTEN
tcp        0      0 *:ftp                   *:*                     LISTEN
tcp        0      0 *:ssh                   *:*                     LISTEN
tcp        0      0 localhost.localdoma:ipp *:*                     LISTEN
tcp        0      0 *:telnet                *:*                     LISTEN
tcp        0      0 localhost.localdom:smtp *:*                     LISTEN
tcp       72      0 vmlctlx4.india.hp.c:135 nt12254.india.hp.c:1497 ESTABLISHED
tcp        0      0 vmlctlx4.india.h:telnet nt1751.india.hp.co:3436 ESTABLISHED
tcp        0      2 vmlctlx4.india.h:telnet nt1751.india.hp.co:3337 ESTABLISHED
udp    65344      0 *:135                   *:*
udp        0      0 *:sunrpc                *:*
udp        0      0 *:631                   *:*
Active UNIX domain sockets (servers and established)
Proto RefCnt Flags       Type       State         I-Node Path
unix  2      [ ACC ]     STREAM     LISTENING     1717   /dev/gpmctl
unix  2      [ ACC ]     STREAM     LISTENING     1838   /tmp/.font-unix/fs7100
unix  2      [ ACC ]     STREAM     LISTENING     1962   /tmp/.X11-unix/X0
unix  9      [ ]         DGRAM                    1113   /dev/log
unix  2      [ ACC ]     STREAM     LISTENING     1952   /tmp/.gdm_socket
unix  3      [ ]         STREAM     CONNECTED     1992   /tmp/.X11-unix/X0
unix  3      [ ]         STREAM     CONNECTED     1991
unix  3   &! ;nbs! p;  [ ]         STREAM     CONNECTED     1988   /tmp/.X11-unix/X0
unix  3      [ ]         STREAM     CONNECTED     1987
unix  3      [ ]         STREAM     CONNECTED     1972   /tmp/.font-unix/fs7100
unix  3      [ ]         STREAM     CONNECTED     1971
unix  3      [ ]         STREAM     CONNECTED     1974   /tmp/.X11-unix/X0
unix  3      [ ]       ! ;  STREAM     CONNECTED     1965
unix  2      [ ]         DGRAM                    1860
unix  2      [ ]         DGRAM                    1728
unix  2      [ ]         DGRAM                    1693
unix  2      [ ]         DGRAM                    1679
unix  2      [ ]         DGRAM                    1563
unix  2      [ ]         DGRAM                    1323
unix  2      [ ]         DGRAM                    1122
 
cat /proc/net/udp returns
 
 sl  local_address rem_address   st tx_queue rx_queue tr tm->when retrnsmt   uid  timeout inode
   7: 00000000:0087 00000000:0000 07 00000000:0000FF40 00:00000000 00000000     0        0 26555 2 c1391080
 111: 00000000:006F 00000000:0000 07 00000000:00000000 00:00000000 00000000     0        0 1151 2 c1935060
 119: 00000000:0277 00000000:0000 07 00000000:00000000 00:00000000 00000000     0       
0 1809 2 cdcbc0c0

As you can see some bytes present in the UDP queue. I am not sure why rpcd listening is not able to get this.
 
Any help would be appreciated.
 
Thanks,
Vaibhav Khanduja
 

"Steven J. Yellin" <yellin@xxxxxxxxxxxxxxxxx> wrote:
You are using the original RH9 kernel. I don't know how to deal with
the problem you've partly described, but the first thing to try is getting
all the updates, including the latest kernel, version 2.4.20-43.9.

Steven Yellin

On Sun, 26 Jun 2005, Vaibhav Khanduja wrote:

> Hi All,
>
> I am problems dce/rpc communication on Redhat Linux 9.0
>
> uname -a
>
> 2.4.20-8smp #1 SMP Thu Mar 13 17:45:54 EST 2003 i686 i686 i386 GNU/Linux
>
> cat /etc/redhat-release
>
> Red Hat Linux release 9 (Shrike)
> DCE rpc communication comes with a daemon rpcd, which is used to
> register rpc server interfaces running the machine. The rpcd daemon runs
> on port 135 and any external client who wants to take service of the rpc
> server contacts rpcd, gets the interfaces and port number of! ! rpc server
> and then sends a request. The problem which I see here is the rpc
> servers are not getting registered with rpcd i.e. because the rpc
> communication breaks. This problem immediately does not come on Redhat
> 9.0 but is observed after some and is persistent.
> Any help in this regard is realy appreciated. I have also seen a bug
> in bugzilla related to nfs rpc communication, it might be similar to
> that.
>
> The bugzilla link is
> https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=118839
>
> Thanks,

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