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6506 NetFlow

okandaur89
Level 1
Level 1

Hi,

I'm trying to capture an ingress traffic on SVI interface of my Cisco 6506 (WS-C6506-E).

I've enabled NetFlow on the Multilayer Switch Feature Card (MSFC):

ip flow-export source Vlan254

ip flow-export version 5

ip flow-export destination 172.23.100.21 2055

Enabled NetFlow and NetFlow Data Export (NDE) on the Policy Feature Card (PFC):

ip flow ingress layer2-switched vlan 130

mls netflow interface

mls flow ip interface-destination

mls nde sender version 5

mls aging fast threshold 127

mls aging long 1000

mls sampling time-based 512

mls cef error action reset

mls netflow sampling

and on the monitorable interface:

interface Vlan130

ip address 172.23.170.2 255.255.255.0

ip flow ingress

mls netflow sampling

standby 1 ip + timers + priority + preempt + authentication

Now I'm trying to see capruted flows. The point is I can't see flow's source address, source and destination port, and L4 protocol for unicast flows:

Cat6506-LAN1#sh mls netflow ip

Displaying Netflow entries in Active Supervisor EARL in module 5

DstIP           SrcIP           Prot:SrcPort:DstPort  Src i/f          :AdjPtr

-----------------------------------------------------------------------------

Pkts         Bytes         Age   LastSeen  Attributes

---------------------------------------------------

172.23.131.5    0.0.0.0         0   :0      :0        Vl130            :0x0

202          52554         2     17:04:35   L2 - Dynamic

0.0.0.0         0.0.0.0         0   :0      :0        --               :0x0

13312        6807977       2     17:04:35   L3 - Dynamic

172.23.170.64   0.0.0.0         0   :0      :0        Vl130            :0x0

0            0             2     17:04:34   L2 - Dynamic

172.23.170.123  0.0.0.0         0   :0      :0        Vl130            :0x0

0            0             2     17:04:35   L2 - Dynamic

224.0.0.2       172.23.170.3    udp :1985   :1985     Vl130            :0x0

2            156           1     17:04:35   Multicast

224.0.0.2       172.23.170.3    udp :1985   :1985     Vl130            :0x0

8            624           6     17:28:03   Multicast

172.23.170.181  0.0.0.0         0   :0      :0        Vl130            :0x0

0            0             5     17:28:03   L2 - Dynamic

The same output info I get on my NetFlow collector.

Anybody know a reason what can prevent of collecting flows correctly?

Thanks.

1 Accepted Solution

Accepted Solutions

cmarva
Level 4
Level 4

might want to change the flow mask to full instead of destination. I think that should give you the rest of the info. chris

View solution in original post

1 Reply 1

cmarva
Level 4
Level 4

might want to change the flow mask to full instead of destination. I think that should give you the rest of the info. chris

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