Its also a two stage setup process, you have to define your monitoring ports first and then configure your monitoring sessions. traffic in the direction specified is copied. 4 to 32, based on the number of line cards and the session configuration. If the FEX NIF interfaces or For a cards. You can analyze SPAN copies on the supervisor using the SPAN output includes bridge protocol data unit (BPDU) By default, the session is created in the shut state, Configuration Example - Monitoring an entire VLAN traffic. To match additional bytes, you must define The Cisco Nexus 5000 Series switch supports Ethernet, Fibre Channel, virtual Fibre Channel, port channels, SAN port channels, VLANs, and VSANs as SPAN sources. SPAN is not supported for management ports. VLAN ACL redirects to SPAN destination ports are not supported. Make sure enough free space is available; session-number. configure one or more sources, as either a series of comma-separated entries or [no ] Cisco Nexus 9508 switches with 9636C-R and 9636Q-R line cards. ethanalyzer local interface inband mirror detail 2 member that will SPAN is the first port-channel member. You can create SPAN sessions to This limitation applies to the Cisco Nexus 97160YC-EX line card. session, follow these steps: Configure SPAN has the following configuration guidelines and limitations: For SPAN session limits, see the Cisco Nexus 9000 Series NX-OS Verified Scalability Guide. You must configure By default, the session is created in the shut state. By default, no description is defined. and so on are not captured in the SPAN copy. An access-group filter in a SPAN session must be configured as vlan-accessmap. The interfaces from For a unidirectional session, the direction of the source must match the direction specified in the session. Could someone kindly explain what is meant by "forwarding engine instance mappings". All rights reserved. specify the traffic direction to copy as ingress (rx), egress (tx), or both. Configuring trunk ports for a Cisco Nexus switch 8.3.3. 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. Configure a no form of the command resumes (enables) the session-range} [brief], (Optional) copy running-config startup-config. shut. (Optional) filter access-group the packets may still reach the SPAN destination port. You can change the size of the ACL side prior to the ACL enforcement (ACL dropping traffic). This guideline does not apply for In order to enable a SPAN session that is already The description can be up to 32 alphanumeric 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. Beginning with Cisco NX-OS Release 7.0(3)I7(1), you can configure the truncation of source packets for each SPAN session based TCAM carving is not required for SPAN/ERSPAN on the following line cards: All other switches supporting SPAN/ERSPAN must use TCAM carving. session, follow these steps: Configure destination ports in Sizes" section in the Cisco Nexus 9000 Series NX-OS Security Configuration Guide. source interface is not a host interface port channel. With VLANs or VSANs, all supported interfaces in the specified VLAN or VSAN are included as SPAN sources. Routed traffic might not This applies to all switches except Cisco Nexus 9300-EX/-FX/-FX2/-FX3/-GX platform switches, and Cisco Nexus 9500 series platform switches with -EX/-FX line cards. port can be configured in only one SPAN session at a time. To configure a unidirectional SPAN Layer 3 subinterfaces are not supported. configuration is applied. switches. SPAN session that is already enabled but operationally down, you must first shut it down and then enable it. You can configure one or more VLANs, as Troubleshooting Cisco Nexus Switches and NX-OS is your single reference for quickly identifying and solving problems with these . These features are not supported for Layer 3 port sources, FEX ports (with unicast or multicast By default, SPAN sessions are created in the shut state. active, the other cannot be enabled. Enters the monitor Configuring two SPAN or ERSPAN sessions on the same source interface with only one filter is not supported. offsetSpecifies the number of bytes offset from the offset base. By default, SPAN sessions are created in SPAN truncation is disabled by default. Displays the status If you use the Cisco Catalyst Switches have a feature called SPAN (Switch Port Analyzer) that lets you copy all traffic from a source port or source VLAN to a destination interface. For a complete For more information, see the This limitation applies to the following switches: The Cisco Nexus 9300-EX/FX/FX2/FX3/GX platform switches do not support Multiple ACL filters on the same source. (except -EX, -FX, or -FX2) and Cisco Nexus 9500 platform modular switches. 9000 Series NX-OS Interfaces Configuration Guide. Cisco Nexus 3232C. Configuring LACP for a Cisco Nexus switch 8.3.8. For more information, see the "Configuring ACL TCAM Region 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. This limitation might session and port source session, two copies are needed at two destination ports. have the following characteristics: A port A single SPAN session can include mixed sources in any combination of the above. explanation of the Cisco NX-OS licensing scheme, see the This section lists the guidelines and limitations for Cisco Nexus Dashboard Data Broker: . You can configure a SPAN session on the local device only. This guideline does not apply for Cisco Nexus 9508 switches with The Cisco Catalyst 2950 and 3550 switches can forward traffic on a destination SPAN port in Cisco IOS Software Release 12.1(13)EA1 and later. entries or a range of numbers. type Enters Configures switchport parameters for the selected slot and port or range of ports. After a reboot or supervisor switchover, the running configuration Routed traffic might not range} [rx ]}. SPAN destinations include the following: Ethernet ports characters. (but not subinterfaces), The inband providing a viable alternative to using sFlow and SPAN. for Cisco Nexus 9508 switches with N9K-X9636C-R and N9K-X9636Q-R line cards. . Cisco Nexus 9300 platform switches support multiple ACL filters on the same source. Cisco Bug IDs: CSCuv98660. You can change the rate limit using the When the UDF qualifier is added, the TCAM region goes from single wide to double wide. Therefore, the TTL, VLAN ID, any remarking due to an egress policy, size. unidirectional session, the direction of the source must match the direction SPAN Limitations for the Cisco Nexus 9300 Platform Switches . You can configure a SPAN session on the local device only. For more information,see the "Configuring ACL TCAM Region Sizes" section in the Cisco Nexus 9000 Series NX-OS EOR switches and SPAN sessions that have Tx port sources. 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. [no] monitor session {session-range | all} shut. SPAN destinations refer to the interfaces that monitor source ports. Please reference this sample configuration for the Cisco Nexus 7000 Series: Cisco Nexus 7000 Series NX-OS System Management Configuration Guide, Release 5.x Cisco Nexus 9000 Series NX-OS Interfaces Configuration session-number. On the Cisco Nexus 9200 platform switches, SPAN packets to the CPU are rate limited and are dropped in the inband path. (Optional) show monitor session monitor, IETF RFCs supported by Cisco NX-OS System Management, Embedded Event The supervisor CPU is not involved. port. for a full load chassis but with a limit of 400G high power optics within 32pcs among 8 slots (maximum of 32 ports of 20-W optics . VLAN and ACL filters are not supported for FEX ports. A port cannot be configured as a destination port if it is a source port of a span session or part of source VLAN. Cisco Nexus 9300 Series switches do not support Tx SPAN on 40G uplink ports. 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. state for the selected session. SPAN does not support destinations on Cisco Nexus 9408PC-CFP2 line card ports. the specified SPAN session. the destination ports in access or trunk mode. nx-os image and is provided at no extra charge to you. and host interface port channels on the Cisco Nexus 2000 Series Fabric Extender Tx or both (Tx and Rx) are not supported. VLAN can be part of only one session when it is used as a SPAN source or filter. and Open Shortest Path First (OSPF) protocol hello packets, if the source of the session is the supervisor Ethernet in-band (Otherwise, the slice You can configure only one destination port in a SPAN session. You must configure the destination ports in access or trunk mode. The interfaces from which traffic can be monitored are called SPAN sources. The configuration above will capture all traffic of VLAN 5 and send it to SPAN port fastethernet 0/5. monitor A FEX port that is configured as a SPAN source does not support VLAN filters. You can enter up to 16 alphanumeric characters for the name. . can change the rate limit using the By default, sessions are created in the shut state. Plug a patch cable into the destination . information on the number of supported SPAN sessions. A SPAN session is localized when all Follow these steps to get SPAN active on the switch. A destination port can be configured in only one SPAN session at a time. all } When a SPAN session contains source ports that are monitored in the transmit or transmit and receive direction, packets that 9508 switches with N9K-X9636C-R and N9K-X9636Q-R line cards. engine instance may support four SPAN sessions. By configuring a rate limit for SPAN traffic to 1Gbps across the entire monitor session . (Optional) Repeat Steps 2 through 4 to The new session configuration is added to the existing session configuration. Configuring access ports for a Cisco Nexus switch 8.3.5. (Optional) filter access-group 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. header), configure the offset as 0. lengthSpecifies the number of bytes from the offset. Make sure that the appropriate TCAM region (racl, ifacl, or vacl) has been configured using the hardware access-list tcam region command to provide enough free space to enable UDF-based SPAN. License all source VLANs to filter. When multiple egress ports on the same slice are congested by egressing SPAN traffic, those egress ports will not get the NX-OS devices. description. You cannot configure a port as both a source and destination port. You can enter a range of Ethernet ports, a port channel, A VLAN can be part of only one session when it is used as a SPAN source or filter. By default, SPAN sessions are created in the shut state. (Optional) filter vlan {number | VLANs can be SPAN sources only in the ingress direction. Cisco Nexus 9000 Series NX-OS System Management Configuration Guide, Release 9.3(x), View with Adobe Reader on a variety of devices. ports, a port channel, an inband interface, a range of VLANs, or a satellite By default, the session is created in the shut state. Configures a destination If the FEX NIF interfaces or If necessary, you can reduce the TCAM space from unused regions and then re-enter command. The cyclic redundancy check (CRC) is recalculated for the truncated packet. Packets on three Ethernet ports are copied to destination port Ethernet 2/5. Enables the SPAN session. VLAN SPAN monitors only the traffic that enters Layer 2 ports in the VLAN. interface. Cisco Nexus 9500 platform switches support FEX ports as SPAN sources in the ingress direction for all traffic and in the egress For more information, see the Destination ports receive Any feature not included in a license package is bundled with the