You should be able to graph your VLAN traffic by creating a virtual data source with CDEF. For example, lets say that you have these RRD files:
port6.rrd (for port 6) port7.rrd (for port 7) port8.rrd (for port 8) port9.rrd (for port 9) port10.rrd (for port 10) port11.rrd (and for port 11) Your DEF's when graphing probably looks something like this (ignore the MAX part, you may be using a different consolidation fuction): DEF:port6_in=port6.rrd:in:MAX DEF:port7_in=port7.rrd:in:MAX DEF:port8_in=port8.rrd:in:MAX DEF:port9_in=port9.rrd:in:MAX DEF:port10_in=port10.rrd:in:MAX DEF:port11_in=port11.rrd:in:MAX Now what you can do is create a virtual data source which sums all the port "in" stats like this: CDEF:vlan1_in=port6_in,port7_in,+,port8_in,+,port9_in,+,port10_in,+,port11_i n,+ Then just graph that CDEF and you're done. The CDEF data source uses Reverse Polish Notation (RPN) math, so that's why it may look a little strange. Hope this helps. Jason... -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: Friday, September 24, 2004 10:43 AM To: [email protected] Subject: [rrd-users] create a RRD with the sum of other RRDs Hi!!! Well i hope i explain correctly. I have configured a switch with SNMP to get IN and OUT traffic port by port, so i have a RRD file with IN and OUT for each switch port (in this case 48 ports = 48 RRD files). Well, all this works OK.,.... but what i need is to see all the traffic of the VLANs. I explain...... I have one VLAN called VLAN1 with the ports 6,7,8,9,10 and 11, so i want to create a RRD file with the traffic of that VLAN, the sum of the traffic of ports 6,7,8,9,10 and 10. An example: traffic (in bytes): port 6 = 100 port 7 = 200 port 8 = 50 port 9 = 300 port 10 = 50 port 11 = 100 VLAN1 = 800 How can i create (automatically or via perl script) a RRD file with the VLAN1 traffic??? Thanks in advance..... -- Unsubscribe mailto:[EMAIL PROTECTED] Help mailto:[EMAIL PROTECTED] Archive http://www.ee.ethz.ch/~slist/rrd-users WebAdmin http://www.ee.ethz.ch/~slist/lsg2.cgi -- Unsubscribe mailto:[EMAIL PROTECTED] Help mailto:[EMAIL PROTECTED] Archive http://www.ee.ethz.ch/~slist/rrd-users WebAdmin http://www.ee.ethz.ch/~slist/lsg2.cgi
