Mls flow ip interface-full – why do important?

In the support staff we frequently help customers setup configurations to allow NetFlow and sFlow on a variety of device types. The unit types always appear in the future in waves, or things i call, “;the flavor each week.Inches A week ago I generate a quantity of ’cisco’ ASA firewalls. Now I’ve been establishing a couple of ’cisco’ 6500 Catalyst Series Switches.

In the support staff we frequently help customers setup configurations to allow NetFlow and sFlow on a variety of device types. The unit types always appear in the future in waves, or things i call, “;the flavor each week.Inches A week ago I generate a quantity of ’cisco’ ASA firewalls. Now I’ve been establishing a couple of ’cisco’ 6500 Catalyst Series Switches.

Frequently customers initially set these ’cisco’ switches track of the standard NetFlow instructions after which see traffic under reported when searching at details from your NetFlow reporting tool.

When configuring the 6500 Catalyst for flow monitoring you have to remember to include the right MLS instructions to allow flow monitoring from the Layer 2 switched traffic. There’s an excellent 6509 configuration blog which i reference on all these setup calls that explains all the instructions required to properly obtain the switch configured.

It is recommended that you apply the INTERFACE-FULL option when configuring the flow mask around the MLS FLOW command.

Why so much interest?

The flow mask defines the format of the cache entry within the NetFlow cache table. You are able to configure the flow mask type based on your requirement. If all of the network admin likes you is aggregated usage statistics on the source or destination IP basis, then your shortened flow masks may be helpful. Furthermore, shorter mask sizes lead to smaller sized cache/TCAM utilization. Speculate Scrutinizer is mainly aimed toward the use of NetFlow within an enterprise atmosphere our customers usually need to see the entire flow information.

This is actually the listing of flow masks available.

• source-only—A less-specific flow mask. One entry for every source Ip is maintained. All flows from the given source Ip make use of this entry.
• destination—Like source-only, a less-specific flow mask. One entry for every destination Ip is maintained. All flows to some given destination Ip make use of this entry.
• destination-source—A more-specific flow mask. One entry for every source and destination Ip pair. All flows between same source and destination IP addresses make use of this entry.
• destination-source-interface—A more-specific flow mask. Adds the origin VLAN Simple Network Management Protocol (SNMP) ifIndex towards the information within the destination-source flow mask.
• full—A more-specific flow mask. The PFC creates and keeps a separate cache entry for every IP flow. A complete entry includes the origin Ip, destination Ip, protocol, and protocol interfaces.
• interface-full—The most-specific flow mask. Adds the origin VLAN SNMP ifIndex towards the information within the full-flow mask.

This is a diagram that does a fantastic job illustrating the various mls masking possibilities within the Catalyst 6500.

Check Cisco’s configuration guide for additional info on all the NetFlow configuration instructions around the Catalyst 6500 Switch.

If you would like help configuring your devices for NetFlow monitoring and export, or if you’d like me to inform you how Scrutinizer and NetFlow can offer obvious visibility into what sort of visitors are happening in your network.

Call me – (207)324-8805

Resourse: https://plixer.com/blog/mls-flow-ip-interface-full-why-is-it-important/

kinX: Keyboard Hacking

Video COMMENTS:

• Denis Gantsev: i watched the whole video but still don't understand… lol Why he is not happy with some regular keyboard? Why he takes all this work to shave 1ms delay when a key is pressed?.. I really don't get it; like the problem he is trying to solve is taken out of nowhere
  well great, many things have been learnt; but duude.. it's not even perceptible at that level

• Anton Feoktistov: Great talk and project, thank you for sharing!

• Dean Drover: Bought Das-keyboard. In the instruction manual they say it's better to connect to PS/2 port rather than usb (if you have one). Maybe this is due to polling?