Solved: Port spanning - mirror - Cisco Community
2012年12月12日 · Hello, Need some to configure a Cisco 3750 for port spanning or to mirror the ports. What I have now setup is monitor session 1 source interface fa1/0/1 -23 monitor session 1 destination interface fa1/0/24 I'm not able to monitor all the traffic coming from ports 1 through 23 as we plug into port 2...
ASR9000/XR: How to use Port Spanning or Port Mirroring
2011年3月20日 · This document provides some extra documentation and use cases on the use of port spanning or port mirroring. You can monitor traffic passing in & out of a set of L2 or L3 Ethernet interfaces (including bundle-Ether). Core Issue. ASR 9000 is the only platform implementing SPAN on XR (Only support on ethernet linecards, not on SIP-700.)
Understanding SPAN,RSPAN,and ERSPAN - Cisco Community
2013年5月3日 · Introduction: Switch port Analyzer (SPAN) is an efficient, high performance traffic monitoring system. It duplicated network traffic to one or more monitor interfaces as it transverse the switch. SPAN is used for troubleshooting connectivity issues and calculating network utilization and perform...
Solved: STP: Root port vs. designated port - Cisco Community
2010年12月7日 · This is the case because the root port is the uplink towards the root, and the designated port is the downlink to a lower portion of the spanning tree. Hope that clears things up. View solution in original post
How to configure port monitoring (SPAN) on a Catalyst 2940, …
2009年6月22日 · SPAN (Switched Port Analyzer): Copies traffic from source ports to a destination port for monitoring. RSPAN (Remote SPAN): Extends SPAN functionality across multiple switches using a dedicated VLAN. Configuration Steps: Clear any existing configuration for the desired session. Define the source port(s) and traffic direction (ingress, egress, or ...
Solved: When to enable Portfast? - Cisco Community
2007年3月19日 · BTW, I recall (?) the "normal" port PortFast command doesn't apply to switch trunk ports (also recall, there is a PortFast command to enable on trunks, if desired). Remember, STP is only needed if there are intentional L2 loops (i.e. L2 backup paths) or for the unexpected/accidental creation of L2 loops.
Solved: port channel and portfast - Cisco Community
2007年1月4日 · I need to connect a Netscalar Load Balancer to a Cisco 6500 switch via two ethernet (100Mbps/1Gbps) between them. I will be configuring the two uplink ports using set port channel command on the Cisco side. Due to the load balancer, I also have to configure the two uplink ports with portfast enabled...
Best Practice commands on a trunk port - Cisco Community
2017年8月17日 · This is good enough. If you are connecting a tunk port or 2 to a server, you can add this command to the port "spanning-tree portfast trunk" This command is NOT recommended if you are connecting switches together. (sometimes I have to use mode dynamic desirable, and I don't know why/what the difference is. Still looking into that)
Spanning tree block port selection - Cisco Community
2017年2月16日 · First of all sorry for the late reply. After electing the root bridge STP has to be choose the root port to the root bridge & the lowest port-priority become the root port & other redundant port will be blocked. So port-priority is used to elect the root port & block the the redundant link in the network. Regards'
STP config on Port-channel Best Practice - Cisco Community
2012年4月4日 · The Root Guard by itself moves a port into Discarding (Root Inconsistent) state if it receives a superior BPDU that would otherwise make the port the new root port. However, if at the same time, the BPDU Guard was configured on this port, an arrival of a BPDU, be it inferior or superior, would trip the BPDU Guard protection and cause the port ...