Re: Timeout: No Response from client-server

If I use tcpdump in client-server:

10:26:48 root[load: 0.00]@client-server ~# tcpdump -i eth0 port 161
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on eth0, link-type EN10MB (Ethernet), capture size 96 bytes


10:32:14.174663 IP marvin.37634 > client-server.snmp:  C=sw 
GetNextRequest(25) 
10:32:14.175457 IP client-server.snmp > monitoring-server.37634:  C=sw 
GetResponse(104)  system.sysDescr.0=[|snmp]
10:32:15.177018 IP monitoring-server.37634 > client-server.snmp:  C=sw 
GetNextRequest(25) 
10:32:15.177793 IP client-server.snmp > monitoring-server.37634:  C=sw 
GetResponse(104)  system.sysDescr.0=[|snmp]
10:32:16.179959 IP monitoring-server.37634 > client-server.snmp:  C=sw 
GetNextRequest(25) 
10:32:16.180662 IP client-server.snmp > monitoring-server.37634:  C=sw 
GetResponse(104)  system.sysDescr.0=[|snmp]
10:32:17.184903 IP monitoring-server.37634 > client-server.snmp:  C=sw 
GetNextRequest(25) 
10:32:17.185615 IP client-server.snmp > monitoring-server.37634:  C=sw 
GetResponse(104)  system.sysDescr.0=[|snmp]
10:32:18.188970 IP monitoring-server.37634 > client-server.snmp:  C=sw 
GetNextRequest(25) 
10:32:18.189696 IP client-server.snmp > monitoring-server.37634:  C=sw 
GetResponse(104)  system.sysDescr.0=[|snmp]
10:32:19.191773 IP monitoring-server.37634 > client-server.snmp:  C=sw 
GetNextRequest(25) 
10:32:19.192529 IP client-server.snmp > monitoring-server.37634:  C=sw 
GetResponse(104)  system.sysDescr.0=[|snmp]

12 packets captured
13 packets received by filter
0 packets dropped by kernel
10:32:27 root[load: 0.00]@client-server ~#


Best regards, Margus "Margusja" Roo
+3725148780
skype: margusja
msn: [email protected]
homepage: http://margusja.pri.ee



Margusja wrote:
> Hi
>
> I have two server-rooms (DZ-A and DZ-B)
>
> in DZ-A there is a server called client-server and in a DZ-B there is a 
> monitoring server called monitoring-server.
>
> if i do in monitoring-server i got:
> ~# snmpwalk -c sw client-server -v1
> Timeout: No Response from client-server
> ~#
> I have a connection between monitoring-server and client-server:
> 15:23:00 root[load: 0.14]@monitoring-server ~# ping client-server
> PING client-server (xxx.xxx.xxx.xxx) 56(84) bytes of data.
> 64 bytes from client-server (xxx.xxx.xxx.xxx): icmp_seq=1 ttl=56 
> time=1.23 ms
> ...
>
> --- client-server ping statistics ---
> 3 packets transmitted, 3 received, 0% packet loss, time 2005ms
> rtt min/avg/max/mdev = 0.842/1.346/1.962/0.464 ms
> 15:26:18 root[load: 0.43]@monitorin-server ~#
>
> 15:26:18 root[load: 0.43]@monitoring-server ~# nmap -sU -v -p 161 
> client-server
>
> Starting Nmap 4.68 ( http://nmap.org ) at 2009-05-07 15:27 EEST
> Initiating Ping Scan at 15:27
> Scanning 194.106.120.83 [2 ports]
> Completed Ping Scan at 15:27, 0.03s elapsed (1 total hosts)
> Initiating UDP Scan at 15:27
> Scanning client-server (xxx.xxx.xxx.xxx) [1 port]
> Completed UDP Scan at 15:27, 0.23s elapsed (1 total ports)
> Host client-server (xxx.xxx.xxx.xxx) appears to be up ... good.
> Interesting ports on client-server (xxx.xxx.xxx.xxx):
> PORT    STATE         SERVICE
> 161/udp open|filtered snmp
>
> Read data files from: /usr/share/nmap
> Nmap done: 1 IP address (1 host up) scanned in 0.322 seconds
>           Raw packets sent: 4 (124B) | Rcvd: 1 (46B)
> 15:27:34 root[load: 0.50]@monitoring-server ~#
>
>
> 15:14:16 root[load: 0.08]@client-server ~# ps aux | grep snmpd
> root     24039  0.0  0.8   8992  4248 ?        S    May06   0:05 
> /usr/sbin/snmpd -Lsd -p /var/run/snmpd.pid
> root     26410  0.0  0.0   1712   452 pts/3    S+   15:14   0:00 grep snmpd
> 15:14:34 root[load: 0.06]@beast ~# netstat -ln | grep 161
> udp        0      0 0.0.0.0:161             
> 0.0.0.0:*                          15:29:31 root[load: 0.00]@beast ~#
>
> 15:29:31 root[load: 0.00]@client-server ~# ping monitoring-server
> PING monitoring-server (xxx.xxx.xxx.xxx) 56(84) bytes of data.
>
> --- monitoring-server ping statistics ---
> 3 packets transmitted, 3 received, 0% packet loss, time 2005ms
> rtt min/avg/max/mdev = 0.934/1.265/1.803/0.384 ms
> 15:30:12 root[load: 0.00]@client-server ~#
>
> so looks like there are no connection and firewall problems
>
> client-server snmpd.local.conf:
> com2sec local client-server sw
> com2sec local xxx.xxx.xxx.xxx (<-- client-server IP) sw
> com2sec local monitoring-server sw
>
>
> group MyRWGroup any             local
>
> view all    included  .1                               80
>
> access MyROGroup ""      any       noauth    exact  all    none   none
> access MyRWGroup ""      any       noauth    exact  all    all    none
>
>
> SNMPD is running: root     24039  0.0  0.8   8992  4248 ?        S    
> May06   0:05 /usr/sbin/snmpd -Lsd -p /var/run/snmpd.pid
> and in both servers: NET-SNMP version:  5.4.2.1
>
>
> ---
> Any ideas?
>
>   

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