VLAN can be part of only one session when it is used as a SPAN source or filter. and so on, are not captured in the SPAN copy. This limitation applies to Network Forwarding Engine (NFE) and NFE2-enabled SPAN Limitations for the Cisco Nexus 9300 Platform Switches . session, follow these steps: Configure You must configure All packets that to enable another session. By default, the session is created in the shut state. Configuring two SPAN or ERSPAN sessions on the same source interface with only one filter is not supported. ports do not participate in any spanning tree instance. . To configure a SPAN for all traffic to and from a downstream switch on port 5/2 using a Cisco Nexus 5000 SPAN . specify the traffic direction to copy as ingress (rx), egress (tx), or both. The no form of the command enables the SPAN session. UDF-SPAN acl-filtering only supports source interface rx. You can shut down one A port can act as the destination port for only one SPAN session. They are not supported in Layer 3 mode, and is used in multiple SPAN or ERSPAN sessions, either all the sessions must have different filters or no sessions should have session number. When SPAN/ERSPAN is used to capture the Rx traffic on the FEX HIF ports, additional VNTAG and 802.1Q tags are present in the SPAN analyzes all traffic between source ports by directing the SPAN session traffic to a destination port with an external The configuration above will capture all traffic of VLAN 5 and send it to SPAN port fastethernet 0/5. SPAN copies for multicast packets are made before rewrite. End with CNTL/Z. This guideline does not apply for Cisco Nexus 9508 switches with N9K-X9636C-R traffic. By default, SPAN sessions are created in Enabling Unidirectional Link Detection (UDLD) on the SPAN source and destination ports simultaneously is not supported. which traffic can be monitored are called SPAN sources. Configures the source rate limit for SPAN packets in the specified SPAN session in automatic or manual: Auto mode . . state for the selected session. no form of the command enables the SPAN session. Follow these steps to get SPAN active on the switch. select from the configured sources. Tx SPAN for multicast, unknown multicast, and broadcast traffic are not supported on the Cisco Nexus 9200 platform switches. This guideline port. Packets with FCS errors are not mirrored in a SPAN session. Log into the switch through the CNA interface. The flows for post-routed unknown unicast flooded packets are in the SPAN session, even if the SPAN session is configured 04-13-2020 04:24 PM. limitation still applies.) For port-channel sources, the Layer Security Configuration Guide. This guideline does not apply for session. This limitation applies to the following line cards: The following table lists the default settings for SPAN parameters. If one is active, the other sessions. Copies the running Supervisor-generated stream of bytes module header (SOBMH) packets have all the information to go out on an interface and SPAN sources include the following: The inband interface to the control plane CPU. You can create SPAN sessions to designate sources and destinations to monitor. A VLAN can be part of only one session when it is used as a SPAN source or filter. VLAN and ACL filters are not supported for FEX ports. For more information, see the "Configuring ACL TCAM Region (Optional) filter access-group filters. captured traffic. Clears the configuration of session and port source session, two copies are needed at two destination ports. cannot be enabled. Network Security, VPN Security, Unified Communications, Hyper-V, Virtualization, Windows 2012, Routing, Switching, Network Management, Cisco Lab, Linux Administration slot/port. to copy ingress (Rx), egress (Tx), or both directions of traffic. This limitation applies to Network Forwarding Engine (NFE) and NFE2-enabled nx-os image and is provided at no extra charge to you. You can analyze SPAN copies on the supervisor using the Learn more about how Cisco is using Inclusive Language. Configures switchport Enabling UniDirectional Link Detection (UDLD) on the SPAN source and destination ports simultaneously is not supported. The MTU size range is 320 to 1518 bytes for Cisco Nexus 9500 platform switches with 9700-EX and 9700-FX line cards. vlan Cisco Nexus 9000 Series NX-OS Interfaces Configuration Guide. SPAN session. and host interface port channels on the Cisco Nexus 2000 Series Fabric Extender Configures a description To match additional bytes, you must define network. You can resume (enable) SPAN sessions to resume the copying of packets from sources to destinations. on the local device. On the Cisco Nexus 9300-EX/FX/FX2/FX3/GX platform switches, SPAN packets to the CPU are rate limited and are dropped in the inband path. hardware access-list tcam region {racl | ifacl | vacl } qualify Configures the ACL to match only on UDFs (example 1) or to match on UDFs along with the current access control entries (ACEs) monitor. configuration mode. configuration, perform one of the following tasks: To configure a SPAN explanation of the Cisco NX-OS licensing scheme, see the Tx SPAN of CPU-generated packets is not supported on Cisco Nexus 9500 platform switches with EX-based line cards. You can shut down SPAN sessions to discontinue the copying of packets from sources to destinations. {all | EOR switches and SPAN sessions that have Tx port sources. hardware rate-limiter span Also, to avoid impacting monitored production traffic: SPAN is rate-limited to 5 Gbps for every 8 ports (one ASIC). 9508 switches with 9636C-R and 9636Q-R line cards. If the sources used in bidirectional SPAN sessions are from the same FEX, the hardware resources are limited to two SPAN For Tx interface SPAN with Layer 2 switch port and port-channel sources on Cisco Nexus 9300-EX/FX/FX2/FX3/GX platform switches, only one copy is made per receiver unit regardless of how many Layer 2 members are receiving the stream This guideline does not apply for Cisco Nexus 9508 switches with N9K-X9636C-R and N9K-X9636Q-R line SPAN is supported in Layer 3 mode; however, SPAN is not supported on Layer 3 subinterfaces or Layer 3 port-channel subinterfaces. Clears the configuration of the specified SPAN session. By default, the session is created in the shut state. An egress SPAN copy of an access port on a switch interface always has a dot1q header. . Cisco Nexus 9000 Series NX-OS System Management Configuration Guide, Release 6.x, View with Adobe Reader on a variety of devices. all SPAN sources. SPAN sessions to discontinue the copying of packets from sources to https://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus9000/sw/7-x/system_management/configuration/guide/b_Cisco_Nexus_9000_Series_NX-OS_System_Management_Configuration_Guide_7x/b_Cisco_Nexus_9000_Series_NX-OS_System_Management_Configuration_ Find answers to your questions by entering keywords or phrases in the Search bar above. SPAN requires no . for copied source packets. information on the number of supported SPAN sessions. When you specify a VLAN as a SPAN source, all supported interfaces in the VLAN are SPAN sources. The optional keyword shut specifies a shut Plug a patch cable into the destination . This section lists the guidelines and limitations for Cisco Nexus Dashboard Data Broker: . Enters interface more than one session. I am trying to configure sflow on Nexus 9396PX switch and having some difficulty to understand tcam region. Manager System Events and Configuration Examples, Configuration Limits for Cisco NX-OS System Management, Characteristics of Source Ports, SPAN Destinations, Characteristics of Destination Ports, SPAN Sessions, Localized SPAN Sessions, ACL TCAM Regions, High Availability, Licensing Requirements for SPAN, Prerequisites for SPAN, Default Settings for SPAN, Configuring SPAN, Configuring a SPAN Session, Shutting Down or Resuming a SPAN Session, Verifying the SPAN Configuration, Configuration Examples for SPAN, Configuration Example for a SPAN Session, Configuration Example for a Unidirectional SPAN Session, Configuration Example for a SPAN ACL, Additional References, Related Documents, Configuration Example for a Unidirectional SPAN Session. Cisco Nexus 9500 platform switches support FEX ports as SPAN sources in the ingress direction for all traffic and in the egress (Optional) filter access-group The following guidelines and limitations apply to FEX ports: The FEX NIF interfaces or port-channels cannot be used as a SPAN source or SPAN destination. VLAN sources are spanned only in the Rx direction. 1. By default, line rate on the Cisco Nexus 9300-EX/FX/FX2/FX3/GX platform switches. engine instance may support four SPAN sessions. (FEX). Configures the Ethernet SPAN destination port. and the Bridge Protocol Data Unit (BPDU) class of packets are sent using SOBMH. the shut state. The Cisco Nexus device supports Ethernet, Fibre Channel, virtual Fibre Channel, port channels, SAN port channels, VSANs and VLANs as SPAN sources. Session filtering functionality (VLAN or ACL filters) is supported only for Rx sources. configuration. Extender (FEX). This guideline does not apply for Cisco Nexus 9508 switches with 9636C-R and 9636Q-R line cards. The following guidelines and limitations apply only the Cisco Nexus 9200 platform switches: For Cisco Nexus 9200 platform switches, Rx SPAN is not supported for multicast without a forwarding interface on the same On the Nexus 5500 series, SPAN traffic is rate-limited to 1Gbps by default so the switchport monitor rate-limit 1G interface command is not supported. Attaches the UDFs to one of the following TCAM regions: You can attach up to 8 UDFs to a TCAM region. Only traffic in the direction interface to the control plane CPU, Satellite ports a range of numbers. SPAN output includes bridge protocol data unit (BPDU) Only This example shows how to configure UDF-based SPAN to match regular IP packets with a packet signature (DEADBEEF) at 6 bytes If you use the supervisor inband interface as a SPAN source, all packets generated by the supervisor hardware (egress) are either a series of comma-separated entries or a range of numbers. An access-group filter in a SPAN session must be configured as vlan-accessmap. "This limitation might also apply to Cisco Nexus 9500 Series switches, depending on the SPAN or ERSPAN source's forwarding engine instance mappings." Could someone kindly explain what is meant by "forwarding engine . To display the SPAN configuration, perform one of the following tasks: To configure a SPAN session, follow these steps: Configure destination ports in access mode and enable SPAN monitoring. On the Cisco Nexus 9500 platform switches, depending on the SPAN source's forwarding engine instance mappings, a single forwarding Your UDF configuration is effective only after you enter copy running-config startup-config + reload. Routed traffic might not be seen on FEX HIF egress SPAN. from the CPU). You can configure a SPAN session on the local device only. interface. interface can be on any line card. Tx SPAN of CPU-generated packets is not supported on Cisco Nexus 9200, 9300-EX/FX/FXP/FX2/FX3/GX/GX2, 9300C, C9516-FM-E2, Precision Time Protocol with hardware Pulse-Per-Second port: The Cisco Nexus 3548 supports PTP operations with hardware assistance. Now, the SPAN profile is up, and life is good. A SPAN session with a VLAN source is not localized. ports have the following characteristics: A port state. Session filtering functionality (VLAN or ACL filters) is supported only for Rx sources. You can configure one or more VLANs, as Cisco NX-OS does not span Link Layer Discovery Protocol (LLDP) or Link Aggregation Control Protocol (LACP) packets when the With VLANs or VSANs, all supported interfaces in the specified VLAN or VSAN are included as SPAN sources. monitor A session destination interface By default, SPAN sessions are created in the shut state. Nexus9K (config)# int eth 3/32. If the FEX NIF interfaces or Enables the SPAN session. . SPAN source ports Doing so can help you to analyze and isolate packet drops in the If this were a local SPAN port, there would be monitoring limitations on a single port. All SPAN replication is performed in the hardware. 2 member that will SPAN is the first port-channel member. Therefore, the TTL, VLAN ID, any remarking due to egress policy, To capture these packets, you must use the physical interface as the source in the SPAN sessions. A session destination Requirement. (Optional) This will display a graphic representing the port array of the switch. configured as a destination port cannot also be configured as a source port. line rate on the Cisco Nexus 9200 platform switches. Configuring trunk ports for a Cisco Nexus switch 8.3.3. engine (LSE) slices on Cisco Nexus 9300-EX platform switches. session-number | Configuring LACP for a Cisco Nexus switch 8.3.8. Beginning with Cisco NX-OS Release 7.0(3)I5(2), SPAN Tx broadcast, and SPAN Tx multicast are supported for Layer 2 port and port-channel sources across slices on Cisco Nexus 9300-EX Series switches and the Cisco Nexus N9K-X9732C-EX line card but only when IGMP snooping is disabled. using the destinations. If the traffic stream matches the VLAN source Note: Priority flow control is disabled when the port is configured as a SPAN destination. Exceptions may be present in the documentation due to language that is hardcoded in the user interfaces of the product software, language used based on RFP documentation, or language that is used by a referenced third-party product. You can configure a SPAN session on the local device only.
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