[j-nsp] Netflow / JFlow questions

[Derick Winkworth]

Its not possible on an M...  Its one or the other, IPv4 or MPLS...

http://www.juniper.net/techpubs/software/junos/junos94/swconfig-policy/configuring-active-flow-monitoring-using-version-9.html


"You can define a version 9 flow record template suitable for IPv4 traffic, MPLS 
traffic, or a combination of the two. However, you can sample packets from only 
one type of family (inet or mpls) at the same time."






________________________________
From: Chris Evans <chrisccnpspam2 at gmail.com>
To: juniper-nsp at puck.nether.net
Sent: Tue, August 31, 2010 8:01:44 PM
Subject: [j-nsp] Netflow / JFlow questions

Have a few questions for some folks who have implemented JFlow..

I have a working jflow setup with basic ipv4 and ingress collection on a m7i
with a services pic and also on a MX platform with the MS-DPC blade.

#1 - Is egress netflow supported? It appears that only ingress is supported.
#2 - Why do all examples that I can find say to use a firewall filter to
sample traffic, I have successfully used the 'set interface xx-x/x/x unit xx
family inet sample' command. This appears to be the new way of doing it.
#3 - In my lab I have a MPLS VPN setup and am trying to netflow interfaces
within the VRF. As it appears the device can only do ingress netflow I also
need to sample the mpls interface. Does anyone have an example of how to
gather netflow stats from both the vrf and mpls pe <> p interfaces?


Thanks

Chris
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