CoPP (Control Plane Policying) should be used to protect RP on the Cisco devices by unnecessary and malicious traffic. The traffic managed by the RP(Route Processor) is divided into three functional planes, Data plane, Management Plane, Control plane.
How identify control plane traffic? simply said traffic is destined to the device that you want to apply. such as Routing traffic, SNMP, SSH, Telnet, NTP and so on.
Basically, you want to project, reserve and limit to communication route to the device.
It uses a MQC(Modular QoS CLI). See below template.
Don't forget to apply control plane interface.
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If you want to hide 'Administrator' account on window XP logon screen
1. Run 'regedit.exe' from and find 'UserList'
Last Updated (Sunday, 22 August 2010 00:19)
It took a time to figure out how to make it work RADIUS on Cisco ACS server. Actually, it was fairely easy to setup.
1. Setup RADIUS option on Interface configuration mode.
Last Updated (Wednesday, 25 August 2010 07:31)
LFI stands for Link Fragmentation and interleaving is not of QoS mechanism. However, it is help for real-time traffic such as VOIP on small size of link. LFI on Multilink PPP allows large packets to be fragmented into a small size to fit a minimum delay requirement for real-time traffic. Also, interleaving function provides a special transmit queue for the high priority traffic can be sent earlier than others. 1. Configuring LFI on Multilink PPPRouter-LFI-1#conf t
Last Updated (Wednesday, 31 March 2010 14:10)
Came across good Cisco IP routing concept and fundametal videos on Internet. It produced by Routehub is Premium Cisco Consulting provider of Cisco Products, Solutions, Training, and Professional Services for small, medium, and large-sized businesses. Visit Routehub.com to see more useful information. Part I
Last Updated (Wednesday, 17 March 2010 00:08)
So slow Internet connection after scheduled maintenance on upstream provider(ISP). It could be multiple reasons such as software issue, hardware failure, bad patch cable , dirty fiber and trunk issue. Those are very rare case. Lately I noticed more trouble with MTU mis-setting on backbone routers. When ISP expends their backbone trunk, they put TenGigE card instead of SONET in these days. No wonder why they do that b/c GigE or TenGigE card is much cheaper then SONET card. Here is common mistake is that the forget to change default MTU size(1500) of the fresh card from the box. Most of ISP set MTU on their backbone as upto 9180 or at least bigger than 1524 bytes (due to VLAN tag for internal use). Again, this is very rare case, but it happens. See how to verify MTU size wrong in the ISP backbone.
Last Updated (Saturday, 13 March 2010 22:37)
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