- Community Home
- >
- Networking
- >
- Software Defined Networking
- >
- Empty Hardware Table of HP 2920
Categories
Company
Local Language
Forums
Discussions
Forums
- Data Protection and Retention
- Entry Storage Systems
- Legacy
- Midrange and Enterprise Storage
- Storage Networking
- HPE Nimble Storage
Discussions
Discussions
Discussions
Forums
Discussions
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
- BladeSystem Infrastructure and Application Solutions
- Appliance Servers
- Alpha Servers
- BackOffice Products
- Internet Products
- HPE 9000 and HPE e3000 Servers
- Networking
- Netservers
- Secure OS Software for Linux
- Server Management (Insight Manager 7)
- Windows Server 2003
- Operating System - Tru64 Unix
- ProLiant Deployment and Provisioning
- Linux-Based Community / Regional
- Microsoft System Center Integration
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Community
Resources
Forums
Blogs
- Subscribe to RSS Feed
- Mark Topic as New
- Mark Topic as Read
- Float this Topic for Current User
- Bookmark
- Subscribe
- Printer Friendly Page
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
06-05-2015 07:44 AM
06-05-2015 07:44 AM
Empty Hardware Table of HP 2920
Dear all,
I would like to ask is any way can I empty the Hardware table of HP 2920 Switch while sending traffic pass through it? I have a testbed like this:
host 1 -------------------- HP 2920 ---------------------- host 2
I also sent UDP traffic from host 1 to host 2, when the switch connected to the controller, it automatically created the rules in H/W table for connecting between hosts. I want to delete these rules and make the connection broken until I install another rule which matches the traffic (the traffic still sends from host 1 to host 2, but host 2 only receives packages when the controller applies the new rules).
I tried to disable then enable the OpenFlow instance, at first the H/W table was empty but after few seconds, the rules were appeared again (I kept sending traffic).
Can I delete all the rules on H/W table? I'm using OpenFlow 1.0 protocol and Opendaylight controller.
Thanks and Best regards.
Anh
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
07-03-2015 08:31 AM
07-03-2015 08:31 AM
Re: Empty Hardware Table of HP 2920
Hi Anh,
SDN controllers most of the time install a few 'default flows' on a switch in order to steal or copy some traffic that the controller then can use to construct a view of the topology of the network. Sometimes also a flow is installed to ensure that packets that are not matched by any other flow in the tables of the switch are forwarded normally. These flows are typically installed by the controller as soon as the openflow instance on the switch is activated and contacts the controller. It might be that these are the flows that you are seeing.
This type of flows should typically not interfere with whatever you are trying to to do, so there should be no reason to delete them. Deleting them could impact the behaviour of the controller and depending on the controller they might just get reinstalled immediately. If you have any concerns, could you maybe post output of the flows involved? Let me know if this is of any help to you.
Best regards,
Wouter
HP SDN CoE Team