purview receives netflow and mirrorN, but apps are not identified

[htw]

Hi,
I installed a virtual vmware purview/analytics AAE in deployment mode 2 (Interface mirrored), with eth0 for netflow and management and eth1 for mirror packet reception:
0. Accept settings and continue
1. Hostname: interpur
2. Deployment Mode: Dual Interface Mirrored
3. Management Interface Configuration (eth0):
Address: 192.168.64.220
Netmask: 255.255.254.0
Gateway: 192.168.64.1
Nameserver: [our dns]
Domain name: [our domain]
4. NIS Server/Domain: Not Configured
5. Monitor Interface Configuration :
Tap Mode Interfaces eth1
An SSA switch sends its netflow packets towards 192.168.64.220 and has a mirror-n towards one of its switch ports which is directly connected to the AAE's host. (AAE's eth1 is mapped to a dedicated vswitch with promiscuous mode and All VLAN (4095) enabled. This vswitch uses the esxi-host's physical adpater which is directly connected to the SSA mirror port ge.1.17.)

SSA mirror and netflowconfig:
# mirror
set mirror create 2
set mirror 2 mirrorN 15
set mirror ports ge.1.17 2
# policy
set policy profile 1 name Purviewmirror pvid-status enable pvid 4095 mirror-destination 2
set policy rule admin-profile port lag.0.4 mask 16 port-string lag.0.4 admin-pid 1
set policy rule admin-profile port lag.0.5 mask 16 port-string lag.0.5 admin-pid 1
set policy rule admin-profile port ge.1.45 mask 16 port-string ge.1.45 admin-pid 1
set policy rule admin-profile port tg.1.4 mask 16 port-string tg.1.4 admin-pid 1
# netflow
set netflow export-interval 1
set netflow export-destination 192.168.64.220 2055
set netflow export-version 9
set netflow port lag.0.4-5 enable rx
set netflow port ge.1.45 enable rx
set netflow port tg.1.4 enable rx
set netflow template refresh-rate 30 timeout 1
set netflow cache enableAAE receives netflow packets on eth0:
root@interpur:~$ tcpdump -i eth0 udp port 2055
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on eth0, link-type EN10MB (Ethernet), capture size 65535 bytes
11:28:35.047775 IP 192.168.64.9.2055 > interpur.man.htw-berlin.de.2055: UDP, length 1420
11:28:35.052489 IP 192.168.64.9.2055 > interpur.man.htw-berlin.de.2055: UDP, length 1444
11:28:35.058061 IP 192.168.64.9.2055 > interpur.man.htw-berlin.de.2055: UDP, length 1464
...AAE receives mirror packets on eth1:
root@interpur:~$ tcpdump -i eth1 -c 2
tcpdump: WARNING: eth1: no IPv4 address assigned
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on eth1, link-type EN10MB (Ethernet), capture size 65535 bytes
11:32:07.549780 20:b3:99??72:3b (oui Unknown) > 20:b3:99:55:a0:1f (oui Unknown), ethertype Unknown (0x7034), length 70:
0x0000: a001 0800 4500 0034 01b2 4000 3406 395e ....E..4..@.4.9^
0x0010: 40ca 7004 8d2d cdb8 0050 c52b 245a cadb @.p..-...P.+$Z..
0x0020: 12e4 469b 8010 003e e21e 0000 0101 080a ..F....>........
0x0030: 6b12 fa03 36f0 de74 k...6..t
11:32:07.549789 20:b3:99??72:3b (oui Unknown) > 20:b3:99:55:a0:1f (oui Unknown), ethertype Unknown (0x7034), length 64:
0x0000: a001 0800 4500 002c 104b 0000 3006 d058 ....E..,.K..0..X
0x0010: bad4 81d1 8d2d e055 0aac 0913 8d2d e055 .....-.U.....-.U
0x0020: 0000 0000 6002 11b4 5b0f 0000 0204 05ac ....'...[.......
0x0030: 0000 ..
Management Center also shows netflow and mirror packets:

But the Identification Rate stays at 0% and Application Infos are not populated. What could be the reason? AAE was enforced and rebooted.

[htw]

Hi Thomas,
in this case "netflow enable rx" is not a problem. Seeing this SSA as a border router between two networks, ge.1.45 and tg.1.4 are "outside" and the two LAGs are "inside". All of them are set to rx, so traffic getting into the net domain and flowing out of the domain gets detected. When the appliance startet to decodes the traffic properly, the "no bidirectional traffic"-message disappeared.

Purview Deployment guide suggest setting netflow to rx on inside and outside interface f.e. to prevent double netflow detection and since policy mirroring works only ingress too. I wonder if one can combine the ingress mirrors on insinde and outside with a "netflow both" on the inside for Purview detection. hmmm...

[Frank_Thomas]

Worth Noting, on the netflow. The reason it's reporting no bi-rdirectional because the netflow config is only sending RX.|

Should look something like "set netflow port ge.1.45 enable both"

[htw]

Hi,
after a reboot the affected port returned to normal policy mirror behaviour too.

[htw]

Since it is unlikely that policy mirroring is totally broken I sent the mirror towards another switch port.
set mirror ports ge.1.19 2Now it worked, packets were clearly decodable. 🙂

When I configure the mirror back to ge.1.17 the problem occurs again. So the problem sticks with the switch port. Maybe it is because before trying the policy mirror config, ge.1.17 was used as target port for a GRE-Tunnel before ("tunnel mode gre l2 ge.1.17" in tun-interface definition). The GRE-tunnel mirror worked perfectly. When I started to change to policy mirror configuration I deleted the loopback and tunnel-interfaces. But maybe switch port ge.1.17 still sticks somehow in that mode. I can reboot the router at night to see if ge.1.17 gets "normal" after a reboot.