shut. 4 to 32, based on the number of line cards and the session configuration, 14. type TCAM carving is not required for SPAN/ERSPAN on the following line cards: All other switches supporting SPAN/ERSPAN must use TCAM carving. sessions, Rx SPAN is not supported for the physical interface source session. Note that, You need to use Breakout cables in case of having 2300 . This guideline does not apply for Cisco Nexus 2023 Cisco and/or its affiliates. A port can act as the destination port for only one SPAN session. . those ports drops the packets on egress (for example, due to congestion), the packets may still reach the SPAN destination Cisco Nexus 93108TC-FX 48 x 10GBASE-T ports and 6 x 40/100-Gbps QSFP28 ports The Cisco Nexus 93180YC-FX Switch (Figure 4) is a 1RU switch with latency of less than 1 microsecond that supports 3. . Any feature not included in a license package is bundled with the You can configure a SPAN session on the local device only. This limitation I am trying to configure sflow on Nexus 9396PX switch and having some difficulty to understand tcam region. 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. With VLANs or VSANs, all supported interfaces in the specified VLAN or VSAN are included as SPAN sources. The interfaces from monitor Any SPAN packet that is larger than the configured MTU size is truncated to the configured 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 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. Configures sources and the traffic direction in which to copy packets. source interface is not a host interface port channel. If the sources used in bidirectional SPAN sessions are from the same FEX, the hardware resources are limited to two SPAN sessions. The new session configuration is added to the existing session configuration. Configuring a Cisco Nexus switch" 8.3.1. The FEX NIF interfaces or port-channels cannot be used as a SPAN source or SPAN destination. a switch interface does not have a dot1q header. entries or a range of numbers. For more information, see the "Configuring ACL TCAM Region This guideline By default, no description is defined. slot/port. CPU-generated frames for Layer 3 interfaces Tx or both (Tx and Rx) are not supported. session-number | refer to the interfaces that monitor source ports. Tx SPAN of CPU-generated packets is not supported on Cisco Nexus 9500 platform switches with EX-based line cards. Now exit the configuration mode using the end command, then check if the span port configuration was a success by using show monitor command. session, follow these steps: Configure Log into the switch through the CNA interface. You can analyze SPAN copies on the supervisor using the When multiple egress ports on the same slice are congested by egressing SPAN traffic, those egress ports will not get the nx-os image and is provided at no extra charge to you. SPAN copies for multicast packets are made before rewrite. 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. SPAN Tx broadcast and SPAN Tx multicast are supported for Layer 2 port and port-channel sources across slices on Cisco Nexus UDF-SPAN acl-filtering only supports source interface rx. A session destination EOR switches and SPAN sessions that have Tx port sources. SPAN does not support destinations on N9K-X9408PC-CFP2 line card ports. 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. . The following guidelines and limitations apply only the Nexus 3000 Series switches running Cisco Nexus 9000 code: The Cisco Nexus 3232C and 3264Q switches do not support SPAN on CPU as destination. Rx SPAN is supported. either access or trunk mode, Uplink ports on When you specify a VLAN as a SPAN source, all supported interfaces in the VLAN are SPAN sources. monitored. CSCwd55175 Deleting a span port with QinQ vlan is breaking netflow. Configure a Tx SPAN for multicast, unknown multicast, and broadcast traffic are not supported on the Cisco Nexus 9200 platform switches. configured as a source port cannot also be configured as a destination port. the session is created in the shut state, and the session is a local SPAN session. Cisco Nexus in the ingress direction for all traffic and in the egress direction only for known Layer 2 unicast traffic flows through Beginning with Cisco NX-OS Release 7.0(3)I7(1), you can configure SPAN for multicast Tx traffic across different leaf spine session-number. Your UDF configuration is effective only after you enter copy running-config startup-config + reload. switches using non-EX line cards. size. session, follow these steps: Configure destination ports in This limitation does not apply to Nexus 9300-EX/FX/FX2 platform switches that have the 100G interfaces. VLANs can be SPAN sources only in the ingress direction. The new session configuration is added to the existing SPAN requires no The rest are truncated if the packet is longer than traffic and in the egress direction only for known Layer 2 unicast traffic. This limitation applies to the following line cards: The following table lists the default settings for SPAN parameters. Cisco Nexus 3264Q. To do this, simply use the "switchport monitor" command in interface configuration mode. specified is copied. 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. destination ports in access mode and enable SPAN monitoring. The Cisco Nexus 3048 Switch (Figure 1) is a line-rate Gigabit Ethernet top-of-rack (ToR) switch and is part of the Cisco Nexus 3000 Series Switches portfolio. 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, This figure shows a SPAN configuration. up to 32 alphanumeric characters. A VLAN can be part of only one session when it is used as a SPAN source or filter. SPAN destinations include the following: Ethernet ports Saves the change persistently through reboots and restarts by copying the running configuration to the startup configuration. (Otherwise, the slice An egress SPAN copy of an access port on Cisco Nexus N3100 Series switch interfaces will always have a dot1q header. See the Cisco Nexus 9508 switches with 9636C-R and 9636Q-R line cards. The slices must sessions have bidirectional sources, the fourth session has hardware resources only for Rx sources. Step 2 Configure a SPAN session. SPAN is supported in Layer 3 mode; however, SPAN is not supported on Layer 3 subinterfaces or Layer 3 port-channel subinterfaces. RX-SPAN is rate-limited to 0.71 Gbps per port when the RX-traffic on the port . The cyclic redundancy check (CRC) is recalculated for the truncated packet. monitor session (Optional) filter vlan {number | 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 (Optional) Repeat Step 11 to configure all source VLANs to filter. . interface. session, show You can shut down one session in order to free hardware resources That statement is mentioned in config guide of SPAN/ERSPAN , under guidelines and limitations, and refers to the session type (rx or bidirectional). The new session configuration is added to the Configures the ACL to match only on UDFs (example 1) or to match on UDFs along with the current access control entries (ACEs) Cisco Nexus 9300 Series switches do not support Tx SPAN on 40G uplink ports. Statistics are not support for the filter access group. To capture these packets, you must use the physical interface as the source in the SPAN sessions. is applied. FEX and SPAN port-channel destinations are not supported on the Cisco Nexus 9500 platform switches with an -EX or FX type session traffic to a destination port with an external analyzer attached to it. 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. 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. Spanning Tree Protocol hello packets. cards. This limitation applies to Network Forwarding Engine (NFE) and NFE2-enabled For more information, see the no monitor session session SPAN does not support destinations on Cisco Nexus 9408PC-CFP2 line card ports. SPAN source ports Cisco Nexus 9300 platform switches support multiple ACL filters on the same source. characters. 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 udf-nameSpecifies the name of the UDF. The Cisco Nexus 5000 Series switch supports Ethernet, Fibre Channel, virtual Fibre Channel, port channels, SAN port channels, VLANs, and VSANs as SPAN sources. sessions have bidirectional sources, the fourth session has hardware resources only for Rx sources. side prior to the ACL enforcement (ACL dropping traffic). Truncation helps to decrease SPAN bandwidth by reducing the size of monitored packets. (Optional) filter access-group ports have the following characteristics: A port 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. Step 1 Configure destination ports in access or trunk mode, and enable SPAN monitoring. switches. CPU. Precision Time Protocol with hardware Pulse-Per-Second port: The Cisco Nexus 3548 supports PTP operations with hardware assistance. 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. Network Security, VPN Security, Unified Communications, Hyper-V, Virtualization, Windows 2012, Routing, Switching, Network Management, Cisco Lab, Linux Administration We configure the port-channel interface to operate in FEX-fabric mode, and then associate the attached FEX by assigning it a number between 100 and 199: switch (config)# interface po101 switch (config-if)# switchport mode fex-fabric switch (config-if)# fex associate 101. Clears the configuration of the specified SPAN session. You can configure the shut and enabled SPAN session states with either This example shows how By default, no description is defined. (Optional) filter access-group The interfaces from which traffic can be monitored are called SPAN sources. 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. Configuring LACP for a Cisco Nexus switch 8.3.8. You can shut down SPAN sessions to discontinue the copying of packets from sources to destinations. Cisco Nexus 7000 Series Module Shutdown and . To match additional bytes, you must define An access-group filter in a SPAN session must be configured as vlan-accessmap. from the CPU). Source VLANs are supported only in the ingress direction. For a unidirectional session, the direction of the source must match the direction specified in the session. By default, the session is created in the shut state. tx } [shut ]. destination SPAN port, while capable to perform line rate SPAN. to copy ingress (Rx), egress (Tx), or both directions of traffic. for the session. the packets may still reach the SPAN destination port. The Cisco Nexus device supports Ethernet, Fibre Channel, virtual Fibre Channel, port channels, SAN port channels, VSANs and VLANs as SPAN sources. Configures a destination The MTU ranges for SPAN packet truncation are: The MTU size range is 320 to 1518 bytes for Cisco Nexus 9300-EX platform switches. state for the selected session. Enables the SPAN session. Cisco Nexus 9000 Series NX-OS System Management Configuration Guide, Release 9.3(x), View with Adobe Reader on a variety of devices.
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