DO NOT SPAN PORTS ON NEXUS 5K
Cisco Nexus 5000 Series NX-OS System Management Configuration Guide, Release 5.1(3)N1(1) - Configuring SPAN [Cisco Nexus 5000 Series Switches] - Cisco Systems: If a destination port is oversubscribed, it can become congested. This congestion can affect traffic forwarding on one or more of the source ports.
I'm told this is not an issue on 7K's.
9/25/2013
9/17/2013
Cisco Identity Services Engine (ISE) - Cisco Systems
Cisco Identity Services Engine (ISE) - Cisco Systems: Cisco Identity Services Engine
Cisco ACS - Accounting
Configure a device to log every command to the ACS server:
aaa accounting commands 15 default start-stop group
tacacs+
aaa accounting connection default start-stop group
tacacs+
aaa accounting system default start-stop group
tacacs+
9/10/2013
STP loops strike again
STP loops strike again
this is a very interesting post about a L2 loop experience. The "best practice" I've always been told, isn't enough.
And an interesting solution:
use switchport port-security and limit the number of MAC addresses accepted on the switch port.
this is a very interesting post about a L2 loop experience. The "best practice" I've always been told, isn't enough.
And an interesting solution:
use switchport port-security and limit the number of MAC addresses accepted on the switch port.
9/04/2013
Embedded Packet Capture Configuration Guide, Cisco IOS Release 15M&T - Embedded Packet Capture [Support] - Cisco Systems
Embedded Packet Capture::Cisco IOS
I've never used this and sometimes forget it's an optionhttp://www.cisco.com/en/US/docs/ios-xml/ios/epc/configuration/15-mt/nm-packet-capture.html#GUID-7E23C5F6-7BDF-4D18-A208-34FD726D6789
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