Look at the packet rate as well as type of traffic (unicast or multicast) for CPU-punted traffic from an interface. With a PFC3, Release 12.2 (18)SXE and later releases support ERSPAN (see the "ERSPAN Guidelines and Restrictions" section ). -You cannot configure NetFlow export using the Ethernet Management port (g0/0) -You cannot configure a flow monitor on logical interfaces, such as SVI, port-channel, loopback, tunnels. To overcome the limitations of STP, Cisco introduced virtual-port-channels (vPC) in 2010. . A basic span port is very useful in capturing packets or passively monitoring and is a requirement for some web filtering services such as Websense. These are the limitations of Switched Port Analyzer (SPAN) and Remote SPAN (RSPAN) on the Cisco Catalyst 2950, 3550, 3560 and 3750 swtiches: The Cisco Catalyst 2950 switches can only have one SPAN session active at a time. The Cisco Nexus 5000 Series switches include a family of line-rate, low-latency, lossless 10-Gigabit Ethernet, Cisco Data Center Ethernet, Fibre Channel over Ethernet (FCoE), and now native Fibre Channel switches for data center applications. The traffic is encapsulated in generic routing encapsulation (GRE) and is, therefore, routable across a layer 3 . The tap also delivers inter-VM traffic monitoring without inflicting the inherent limitations of hypervisor span ports. On the n9ks that can do this the traffic punted by span to the cpu is rate-limited to 50pps - so if your flow is in excess of that you will not get accurate data. Hi All, I've learned recently that the Nexus 7000 only allows the configuration of a maximum of 2 Monitor sessions for spanning traffic. 6. In this sample chapter from Troubleshooting Cisco Nexus Switches and NX-OS , you will review the various tools available on the Nexus platform that can help in troubleshooting and day-to-day operation. 5. Here's an example: The 90 sets the outbound bandwidth limit on the port to 90 . ** Use "show port-channel compatibility-parameters" to get more information on failure. The Cisco Nexus 5000 Series includes the Cisco Nexus 5500 Platform and the Cisco Nexus 5000 Platform. Configuration Example - Monitoring an entire VLAN traffic. "Other Stateful Configuration" flag: false Send "Default Router Preference" value: Medium Send "Current Hop Limit" field: 64 Send "MTU" option value: 1500 Send "Router Lifetime" field: 1800 secs Send "Reachable Time" field: 0 ms Send "Retrans Timer" field: 0 ms Suppress RA: Disabled Suppress MTU in RA . through the Cisco virtual switch, using the Cisco Nexus 1000V Series. Cisco Bug IDs: CSCuv98660. We configure the port-channel interface to operate in FEX-fabric mode, and then associate the attached FEX by assigning it a number between 100 and 199: switch (config)# interface po101 switch (config-if)# switchport mode fex-fabric switch (config-if)# fex associate 101. Rule-Based SPAN Rule-based SPAN filters the ingress or egress SPAN traffic based on a set of rules. Note The Cisco Nexus 1010 Virtual Services Appliance is not supported with NAM Traffic Analyzer Release 5.0. Troubleshooting Cisco Nexus Switches and NX-OS is your single reference for quickly identifying and solving problems with these . Routed traffic might not be seen on FEX HIF egress SPAN. This vulnerability affects the following products when running Cisco NX-OS Software Release 7.2(1)D(1), 7.2(2)D1(1), or 7.2(2)D1(2) with both the Pong and FabricPath features enabled and the FabricPath port is actively monitored via a SPAN session: Cisco Nexus 7000 Series Switches and Cisco Nexus 7700 Series Switches.
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