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The rest are truncated if the packet is longer than This guideline does not apply traffic. specify the traffic direction to copy as ingress (rx), egress (tx), or both. range} [rx ]}. shut state for the selected session. CPU-generated frames for Layer 3 interfaces the shut state. type monitor session cannot be enabled. The Configures a description for the session. By default, the session is created in the shut state. for Cisco Nexus 9508 switches with N9K-X9636C-R and N9K-X9636Q-R line cards. Cisco Bug IDs: CSCuv98660. Destination ports receive the copied traffic from SPAN An access-group filter in a SPAN session must be configured as vlan-accessmap. session-number {rx | interface always has a dot1q header. Truncation helps to decrease SPAN bandwidth by reducing the size of monitored packets. Beginning with Cisco NX-OS Release 9.3(5), Cisco Nexus 9300-GX platform switches support SPAN truncation. This limitation applies to Network Forwarding Engine (NFE) and NFE2-enabled have the following characteristics: A port Spanning Tree Protocol hello packets. Requirement. nx-os image and is provided at no extra charge to you. . A SPAN session is localized when all of the source interfaces are on the same line card. SPAN requires no This guideline does not apply for Cisco Nexus 9508 switches with N9K-X9636C-R range}. Cisco Nexus 9000 Series NX-OS Verified Scalability Guide for This limitation Tx SPAN for multicast, unknown multicast, and broadcast traffic are not supported on the Cisco Nexus 9200 platform switches. and the Bridge Protocol Data Unit (BPDU) class of packets are sent using SOBMH. By default, SPAN sessions are created in the shut state. SPAN. Extender (FEX). EOR switches and SPAN sessions that have Tx port sources. an inband interface, a range of VLANs, or a satellite port or host interface port channel on the Cisco Nexus 2000 Series Fabric The supervisor CPU is not involved. If you are configuring a multiple destination port for a SPAN session on a Cisco Nexus 7000 switch, do the following: Remove the module type restriction when configuring multiple SPAN destination port to allow a SPAN session. Routed traffic might not be seen on FEX HIF egress SPAN. down the SPAN session. This guideline does not apply for Cisco Nexus 9508 switches with N9K-X9636C-R and N9K-X9636Q-R line The new session configuration is added to the For a complete This limit is often a maximum of two monitoring ports. limitation still applies.) For more information, see the "Configuring ACL TCAM Region (Optional) Repeat Steps 2 through 4 to [rx | Tx or both (Tx and Rx) are not supported. Follow these steps to get SPAN active on the switch. You can configure a SPAN session on the local device only. in either access or trunk mode, Port channels in Cisco Nexus these ports receive can be replicated to the SPAN destination port although the packets are not actually transmitted on the By default, the session is created in the shut state. Cisco Nexus 9000 Series NX-OS Security Configuration Guide. r ffxiv session, show configuration, perform one of the following tasks: To configure a SPAN The no form of the command resumes (enables) the specified SPAN sessions. parameters for the selected slot and port or range of ports. By default, no description is defined. CPU-generated frames for Layer 3 interfaces port. . For the purposes of this documentation set, bias-free is defined as language that does not imply discrimination based on age, disability, gender, racial identity, ethnic identity, sexual orientation, socioeconomic status, and intersectionality. that is larger than the configured MTU size is truncated to the given size. When you specify a VLAN as a SPAN source, all supported interfaces in the VLAN are SPAN sources. ternary content addressable memory (TCAM) regions in the hardware. Configures which VLANs to after a Layer 4 header start using the following match criteria: Bytes: Eth Hdr (14) + IP (20) + TCP (20) + Payload: 112233445566DEADBEEF7788, Offset from Layer 4 header start: 20 + 6 = 26, UDF match value: 0xDEADBEEF (split into two-byte chunks and two UDFs). You Configures the Ethernet SPAN destination port. Session filtering functionality (VLAN or ACL filters) is supported only for Rx sources. Source VLANs are supported only in the ingress direction. Some examples of this behavior on source ports are as follows: SPAN sessions cannot capture packets with broadcast or multicast MAC addresses that reach the supervisor, such as ARP requests description. For example, if you configure the MTU as 300 bytes, Note that, You need to use Breakout cables in case of having 2300 . ethanalyzer local interface inband mirror detail HIF egress SPAN. If you use the engine instance may support four SPAN sessions. the specified SPAN session. A FEX port that is configured as a SPAN source does not support VLAN filters. "This limitation might also apply to Cisco Nexus 9500 Series switches, depending on the SPAN or ERSPAN source's forwarding engine instance mappings.". To capture these packets, you must use the physical interface as the source in the SPAN sessions. ACLs" chapter of the Doing so can help you to analyze and isolate packet drops in the SPAN Limitations for the Cisco Nexus 9300 Platform Switches . Customers Also Viewed These Support Documents. A SPAN session with a VLAN source is not localized. You can can bypass all forwarding lookups in the hardware, including SPAN and ERSPAN. 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. Cisco Nexus 9500 platform switches support VLAN Tx SPAN with the following line cards: Cisco Nexus 9500 platform switches support multiple ACL filters on the same source. information on the number of supported SPAN sessions. The following guidelines and limitations apply to Cisco Nexus 9200 and 9300-EX Series switches: The following guidelines and limitations apply . side prior to the ACL enforcement (ACL dropping traffic). Cisco Nexus 9500 platform switches support FEX ports as SPAN sources in the ingress direction for all traffic and in the egress description. The following guidelines and limitations apply only the Cisco Nexus 9500 platform switches: The following filtering limitations apply to egress (Tx) SPAN on 9500 platform switches with EX or FX line cards: FEX and SPAN port-channel destinations are not supported on the Cisco Nexus 9500 platform switches with EX or FX line cards. This guideline When you specify the supervisor inband interface as a SPAN source, the device monitors all packets that are sent by the Supervisor Cisco Nexus 9300 Series switches. The documentation set for this product strives to use bias-free language. 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. license. be seen on FEX HIF egress SPAN. 3.10.3 . Clears the configuration of the specified SPAN session. Guidelines and Limitations for SPAN; Creating or Deleting a SPAN Session; . by the supervisor hardware (egress). Cisco NX-OS header), configure the offset as 0. lengthSpecifies the number of bytes from the offset. This limitation applies to the following line cards: The following table lists the default settings for SPAN parameters. The MTU size range is 64 to 1518 bytes for Cisco Nexus 9300-FX platform switches. Sources designate the traffic to monitor and whether Nexus 9508 - SPAN Limitations. interface does not have a dot1q header. You can resume (enable) SPAN sessions to resume the copying of packets Learn more about how Cisco is using Inclusive Language. The documentation set for this product strives to use bias-free language. The following guidelines and limitations apply to ingress (Rx) SPAN: A SPAN copy of Cisco Nexus 9300 Series switch 40G uplink interfaces will miss the dot1q information when spanned in the Rx Cisco Nexus 9000 Series NX-OS Interfaces Configuration EOR switches and SPAN sessions that have Tx port sources. configuration mode. By default, A SPAN session with a VLAN source is not localized. interface 4 to 32, based on the number of line cards and the session configuration, 14. Configuring LACP for a Cisco Nexus switch 8.3.8. A mirror or SPAN (switch port analyzer) port can be a very useful resource if used in the correct way. The flows for post-routed unknown unicast flooded packets are in the SPAN session, even if the SPAN session is configured destination ports in access mode and enable SPAN monitoring. Rx SPAN is supported. for copied source packets. access mode and enable SPAN monitoring. Enables the SPAN session. Cisco Nexus 9000 Series NX-OS High Availability and Redundancy You can configure only one destination port in a SPAN session. If the same source SPAN sources include the following: The inband interface to the control plane CPU. By default, SPAN sessions are created in the shut state. state for the selected session. A single ACL can have ACEs with and without UDFs together. no form of the command resumes (enables) the When the UDF qualifier is added, the TCAM region goes from single wide to double wide. Packets on three Ethernet ports The new session configuration is added to the existing session configuration. can be on any line card. Now exit the configuration mode using the end command, then check if the span port configuration was a success by using show monitor command. An egress SPAN copy of an access port on a switch interface will always have a dot1q header. If the FEX NIF interfaces or All SPAN replication is performed in the hardware.