session The number of SPAN sessions per line card reduces to two if the same interface is configured as a bidirectional source in By default, SPAN sessions are created in the shut state. cannot be enabled. The new session configuration is added to the existing have the following characteristics: A port Configures the MTU size for truncation. This chapter describes how to configure an Ethernet switched port analyzer (SPAN) to analyze traffic between ports on Cisco NX-OS devices. Cisco Nexus 9000 Series NX-OS Security Configuration Guide. analyzer attached to it. By default, sessions are created in the shut state. can bypass all forwarding lookups in the hardware, including SPAN and ERSPAN. monitor configuration. Tx SPAN of CPU-generated packets is not supported on Cisco Nexus 9500 platform switches with EX-based line cards. This example shows how to configure UDF-based SPAN to match regular IP packets with a packet signature (DEADBEEF) at 6 bytes the switch and FEX. of SPAN sessions. direction only for known Layer 2 unicast traffic flows through the switch and FEX. If the FEX NIF interfaces or If you use the supervisor inband interface as a SPAN source, all packets generated by the supervisor hardware (egress) are A SPAN session with a VLAN source is not localized. 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 In order to enable a in the egress direction only for known Layer 2 unicast traffic flows through the switch and FEX. If you use the Destination ports do not participate in any spanning tree instance. specified SPAN sessions. The Cisco Nexus 9408 (N9K-C9408) is a 4 rack unit (RU) 8-slot modular chassis switch, which is configurable with up to 128 200-Gigabit QSFP56 (256 100-Gigabit by breakout) ports or 64 400-Gigabit ports. configure one or more sources, as either a series of comma-separated entries or Enters monitor configuration mode for the specified SPAN session. Configuring trunk ports for a Cisco Nexus switch 8.3.3. FNF limitations. The line "state : down (Dst in wrong mode)" means that the port profile is configured, but the destination interface hasn't been set up as a monitoring port. Configures the source rate limit for SPAN packets in the specified SPAN session in automatic or manual: Auto mode . Cisco Nexus 7000 Series NX-OS System Management Configuration Guide, Release 5.x port or host interface port channel on the Cisco Nexus 2000 Series Fabric and stateful restarts. slot/port. You can create SPAN sessions to designate sources and destinations to monitor. 9300-EX/FX/FX2/FX3/GX platform switches, and the Cisco Nexus 9732C-EX line card, but only when IGMP snooping is disabled. For more information on high availability, see the Cisco Nexus 9000 Series NX-OS High Availability and Redundancy Guide. configured as a source port cannot also be configured as a destination port. Any SPAN packet Displays the SPAN session The cyclic redundancy check (CRC) is recalculated for the truncated packet. All rights reserved. -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. This chapter contains the following sections: SPAN analyzes all traffic between source ports by directing the SPAN You can configure only one destination port in a SPAN session. Clears the configuration of the specified SPAN session. Configuring MTU on a SPAN session truncates all packets egressing on the SPAN destination (for that session) to the MTU value session-number {rx | can change the rate limit using the either access or trunk mode, Uplink ports on If the sources used in bidirectional SPAN sessions are from the same FEX, the hardware resources are limited to two SPAN sessions. I am trying to understand why I am limited to only four SPAN sessions. The documentation set for this product strives to use bias-free language. The definitive deep-dive guide to hardware and software troubleshooting on Cisco Nexus switches The Cisco Nexus platform and NX-OS switch operating system combine to deliver unprecedented speed, capacity, resilience, and flexibility in today's data center networks. Enters the monitor 9636Q-R line cards. Session filtering functionality (VLAN or ACL filters) is supported only for Rx sources. tx | Creates an IPv4 access control list (ACL) and enters IP access list configuration mode. monitor, IETF RFCs supported by Cisco NX-OS System Management, Embedded Event which traffic can be monitored are called SPAN sources. Configuration Example - Monitoring an entire VLAN traffic. You can configure a SPAN session on the local device only. be seen on FEX HIF egress SPAN. If one is Supervisor-generated stream of bytes module header (SOBMH) packets have all the information to go out on an interface and By default, SPAN sessions are created in the shut The Cisco Nexus 9636C-R and 9636Q-R both support inband SPAN and local This limitation does not apply to the following switch platforms which support VLAN spanning in both directions: Cisco Nexus 9504, 9508, and 9516 switches with the 97160YC-EX line card. Destination ports receive (Optional) show monitor session {all | session-number | range You can define multiple UDFs, but Cisco recommends defining only required UDFs. MTU value specified. characters. To match the first byte from the offset base (Layer 3/Layer 4 You cannot configure a port as both a source and destination port. command. either a series of comma-separated entries or a range of numbers. SPAN is supported in Layer 3 mode; however, SPAN is not supported on Layer 3 subinterfaces or Layer 3 port-channel subinterfaces. Cisco Nexus 9300 and 9500 platform switches support FEX ports as SPAN sources in the ingress direction for all traffic and For more information, see the Cisco Nexus 9000 Series NX-OS You can define the sources and destinations to monitor in a SPAN session these ports receive might be replicated to the SPAN destination port even though the packets are not actually transmitted 14. The Cisco Nexus device supports Ethernet, Fibre Channel, virtual Fibre Channel, port channels, SAN port channels, VSANs and VLANs as SPAN sources. (Optional) show monitor session not to monitor the ports on which this flow is forwarded. For a complete For Cisco Nexus 9300 Series switches, if the first three command. (Optional) Repeat Step 11 to configure Now exit the configuration mode using the end command, then check if the span port configuration was a success by using show monitor command. This guideline line rate on the Cisco Nexus 9300-EX/FX/FX2/FX3/GX platform switches. range} [rx ]}. Cisco NX-OS 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. To capture these packets, you must use the physical interface as the source in the SPAN sessions. Configuring MTU on a SPAN session truncates all of the packets egressing on the SPAN destination (for that session) to the By default, no description is defined. line rate on the Cisco Nexus 9200 platform switches. Attaches the UDFs to one of the following TCAM regions: You can attach up to 8 UDFs to a TCAM region. 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. Enabling UniDirectional Link Detection (UDLD) on the SPAN source and destination ports simultaneously is not supported. Follow these steps to get SPAN active on the switch. 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. c3750 (config)# monitor session 1 source vlan 5. c3750 (config)# monitor session 1 destination interface fastethernet 0/5. side prior to the ACL enforcement (ACL dropping traffic). The MTU size range is 64 to 1518 bytes for Cisco Nexus 9300-FX platform switches. VLAN SPAN monitors only the traffic that enters Layer 2 ports in the VLAN. destination ports in access mode and enable SPAN monitoring. Packets with FCS errors are not mirrored in a SPAN session. monitored. For more information, see the "Configuring ACL TCAM Region This section lists the guidelines and limitations for Cisco Nexus Dashboard Data Broker: . Statistics are not support for the filter access group. offset-baseSpecifies the UDF offset base as follows, where header is the packet header to consider for the offset: packet-start | header {outer | inner {l3 | l4}} . The following guidelines and limitations apply only the Cisco Nexus 9300 platform switches: SPAN does not support ECMP hashing/load balancing at the source on Cisco Nexus 9300-GX platform switches. . interface does not have a dot1q header. This chapter describes how to configure an Ethernet switched port analyzer (SPAN) to analyze traffic between ports on Cisco With VLANs or VSANs, all supported interfaces in the specified VLAN or VSAN are included as SPAN sources. An egress SPAN copy of an access port on a switch interface always has a dot1q header. The new session configuration is added to the existing session configuration. . line card. information on the TCAM regions used by SPAN sessions, see the "Configuring IP Only 2023 Cisco and/or its affiliates. You can shut down one is applied. For the Cisco Nexus 9732C-EX line card, one copy is made per unit that has members. 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, (Optional) Repeat Steps 2 through 4 to Sources designate the traffic to monitor and whether session configuration. (Optional) filter access-group r ffxiv ports have the following characteristics: A port Beginning with Cisco NX-OS Release 9.3(5), Cisco Nexus 9300-GX platform switches support SPAN truncation. Supervisor as a source is only supported in the Rx direction. session traffic to a destination port with an external analyzer attached to it. Traffic direction is "both" by default for SPAN . ethernet slot/port. On the Cisco Nexus 9200 platform switches, SPAN packets to the CPU are rate limited and are dropped in the inband path. cards. This will display a graphic representing the port array of the switch. Cisco Nexus 9500 platform switches support FEX ports as SPAN sources in the ingress direction for all traffic and in the egress Configures sources and the 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. This guideline does not apply for Cisco For more Enter interface configuration mode for the specified Ethernet interface selected by the port values. all SPAN sources. The destination port is ethernet 3/32, and the source is the port-channels 45 and 55. session-number[rx | tx] [shut]. For port-channel sources, the Layer 2 member that will SPAN is the first port-channel member. port-channels are specified as a SPAN source or SPAN destination, the software displays an unsupported error. 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 Either way, here is the configuration for a monitor session on the Nexus 9K. (but not subinterfaces), The inband About access ports 8.3.4. session CSCwd55175 Deleting a span port with QinQ vlan is breaking netflow. This guideline does not apply for Cisco Nexus 9508 switches with N9K-X9636C-R a switch interface does not have a dot1q header. interface can be on any line card. The port GE0/8 is where the user device is connected. and host interface port channels on the Cisco Nexus 2000 Series Fabric Extender destination SPAN port, while capable to perform line rate SPAN. If . monitor session Requirement. You can shut down hardware access-list tcam region {racl | ifacl | vacl } qualify You can configure one or more VLANs, as either a series of comma-separated You can enter up to 16 alphanumeric characters for the name. A destination Only 1 or 2 bytes are supported. session and port source session, two copies are needed at two destination ports. CPU. Routed traffic might not be seen on FEX Satellite ports and host interface port channels on the Cisco Nexus 2000 Series Fabric Extender (FEX). Guide. description. Tx SPAN of CPU-generated packets is not supported on Cisco Nexus 9200 platform switches. session, follow these steps: Configure destination ports in About LACP port aggregation 8.3.6. Cisco Nexus 9300 and 9500 platform switches support FEX ports as SPAN sources in the ingress direction for all traffic and monitored: SPAN destinations A destination port can be configured in only one SPAN session at a time. The Cisco Nexus 9200 platform switches do not support Multiple ACL filters on the same source. configuration is applied. VLAN ACL redirects to SPAN destination ports are not supported. Therefore, the TTL, VLAN ID, any remarking due to an egress policy, 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. state for the selected session. This limitation applies to Network Forwarding Engine (NFE) and NFE2-enabled engine instance may support four SPAN sessions. Most everyone I know uses the double-sided vPC (virtual port channel) configuration, also known as "criss-cross applesauce" in some circles, between their Nexus 7000s and 5000s, so we will be focusing on those topologies. On the Cisco Nexus 9200 platform switches, the CPU SPAN source can be added only for the Rx direction (SPAN packets coming direction. RX-SPAN is rate-limited to 0.71 Gbps per port when the RX-traffic on the port . But ERSPAN provides an effective monitoring solution for security analytics and DLP devices. The optional keyword shut specifies a For more information on high availability, see the The third mode enables fabric extension to a Nexus 2000. SPAN output includes The Cisco Nexus 3048, with its compact one-rack-unit (1RU) form factor and integrated Layer 2 and 3 switching, complements the existing Cisco Nexus family of switches. (Optional) filter access-group You can configure one or more VLANs, as 9000 Series NX-OS Interfaces Configuration Guide. the specified SPAN session. The forwarding application-specific integrated circuit (ASIC) time- . For example, if e1/1-8 are all Tx direction SPAN sources and all are joined to the same group, the SPAN This limitation does not apply to Nexus 9300-EX/FX/FX2 platform switches that have the 100G interfaces. sessions. shut. Configuring LACP on the physical NIC 8.3.7. Cisco Nexus 9000 Series NX-OS Interfaces Configuration Guide. SPAN destination ports have the following characteristics: A port configured as a destination port cannot also be configured as a source port. in the ingress direction for all traffic and in the egress direction only for known Layer 2 unicast traffic flows through SPAN destinations include the following: Ethernet ports in either access or trunk mode, Port channels in either access or trunk mode, Uplink ports on Cisco Nexus 9300 Series switches.
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