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. With a PFC3, Release 12.2 (18)SXE and later releases support ERSPAN (see the "ERSPAN Guidelines and Restrictions" section ). This chapter describes how to configure local Switched Port Analyzer (SPAN), remote SPAN (RSPAN), and Encapsulated RSPAN (ERSPAN) on the Catalyst 6500 series switches. The SPAN port does not work for Rx traffic on the pseudowire for interfaces, when the SPAN port is in different ASIC of the RSP2 module. ERSPAN mirrors traffic on one or more "source" ports and delivers the mirrored traffic to one or more "destination" ports on another switch. MAC learning should be disabled using the mac-address-table limit [rspan vlan/bd] maximum num action limit . 1. Cisco Switch SPAN Port Filtering. Combined Egress local SPAN bandwidth supported on Cisco ASR 900 Series RSP2 module is 1 GB. The traffic is encapsulated in generic routing encapsulation (GRE) and is, therefore, routable across a layer 3 . This limit is often a maximum of two monitoring ports. In my case - 10.11.1.1. Local SPAN, RSPAN, and ERSPAN sessions allow you to monitor traffic on one or more ports, or one or more VLANs, and send the monitored traffic to one or more destination ports. Cisco Switch SPAN Port Filtering | Technology or Die 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. . This happens because the SPAN port does not drop the BPDUs coming from the end switch connected to it and could potentially leak BPDUs causing the dispute. Today, I want to focus on the SPAN session . PDF Best Practices for Utilizing Network Monitoring Switches in Cisco ... We were able to get access to Cisco's product labs where I could (remotely) access some of their high-end hardware, and I was able to test the SNMP collector against the Nexus .

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