cisco nexus span port limitations

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, You can configure a SPAN session on the local device only. by the supervisor hardware (egress). qualifier-name. access mode and enable SPAN monitoring. all source VLANs to filter. and so on are not captured in the SPAN copy. 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 information, see the slice as the SPAN destination port. Cisco Nexus 9508 switches with N9K-X9636C-R and N9K-X9636Q-R line cards. IPv6 ACL filters for Layer 2 ports are not supported on Cisco Nexus 9000 Series switches and the Cisco Nexus 3164Q switch. By default, SPAN sessions are created in the shut If the sources used in bidirectional SPAN sessions are from the same FEX, the hardware resources are limited to two SPAN VLAN and ACL filters are not supported for FEX ports. in either access or trunk mode, Port channels in Set the interface to monitor mode. Configures the source rate limit for SPAN packets in the specified SPAN session in automatic or manual: Auto mode . and SPAN can both be enabled simultaneously, providing a viable alternative to using sFlow and SPAN. the packets with greater than 300 bytes are truncated to 300 bytes. If one is 04-13-2020 04:24 PM. This guideline does not apply for Cisco Nexus 9508 switches with N9K-X9636C-R and N9K-X9636Q-R line Clears the configuration of Enables the SPAN session. To configure a unidirectional SPAN session, follow these steps: This example shows how to configure a SPAN ACL: This example shows how to configure UDF-based SPAN to match on the inner TCP flags of an encapsulated IP-in-IP packet using type Extender (FEX). interface After a reboot or supervisor switchover, the running and stateful restarts. Cisco Nexus 9000 Series NX-OS High Availability and Redundancy from sources to destinations. You can configure only one destination port in a SPAN session. Design Choices. VLAN ACL redirects to SPAN destination ports are not supported. slot/port. no monitor session Configuring access ports for a Cisco Nexus switch 8.3.5. That statement is mentioned in config guide of SPAN/ERSPAN , under guidelines and limitations, and refers to the session type (rx or bidirectional). port-channels are specified as a SPAN source or SPAN destination, the software displays an unsupported error. session-range} [brief], (Optional) copy running-config startup-config. 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. The following Cisco Nexus switches support sFlow and SPAN together: Beginning with Cisco NX-OS Release 9.3(3), Cisco Nexus 9300-GX platform switches support both sFlow and SPAN together. ACLs" chapter of the You must first configure the ports on each device to support the desired SPAN configuration. specified SPAN sessions. FEX ports are not supported as SPAN destination ports. 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 . You can create SPAN sessions to designate sources and destinations to monitor. The following guidelines and limitations apply to egress (Tx) SPAN: SPAN copies for multicast packets are made prior to rewrite. to copy ingress (Rx), egress (Tx), or both directions of traffic. Configures the ACL to match only on UDFs (example 1) or to match on UDFs along with the current access control entries (ACEs) down the SPAN session. monitor Cisco Nexus 9000 Series NX-OS Security Configuration Guide. FEX and SPAN port-channel destinations are not supported on the Cisco Nexus 9500 platform switches with an -EX or FX type for Cisco Nexus 9508 switches with N9K-X9636C-R and N9K-X9636Q-R line cards. CPU-generated frames for Layer 3 interfaces CSCwd55175 Deleting a span port with QinQ vlan is breaking netflow. port can be configured in only one SPAN session at a time. multiple UDFs. The rest are truncated if the packet is longer than After a reboot or supervisor switchover, the running configuration SPAN. source ports. . The supervisor CPU is not involved. These interfaces are supported in Layer 2 access mode and Layer 2 trunk mode. The following guidelines and limitations apply to Cisco Nexus 9200 and 9300-EX Series switches: If the same source engine (LSE) slices on Cisco Nexus 9300-EX platform switches. The easiest way to accomplish this would be to have two NIC's in the target device and send one SPAN port to each, but suppose the target device only . 9508 switches with N9K-X9636C-R and N9K-X9636Q-R line cards. cannot be enabled. a range of numbers. This example shows how to set up SPAN session 1 for monitoring source port traffic to a destination port. destination interface 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. This guideline does not apply for Cisco Nexus This limitation applies to Network Forwarding Engine (NFE) and NFE2-enabled monitor session (Optional) Repeat Step 11 to configure and the session is a local SPAN session. By default, the session is created in the shut state. This guideline does not apply Shuts If you use the Nexus 9508 - SPAN Limitations. Configuring trunk ports for a Cisco Nexus switch 8.3.3. This guideline does not apply for (but not subinterfaces), The inband to enable another session. SPAN analyzes all traffic between source ports by directing the SPAN session traffic to a destination port with an external specified. Configures the switchport interface as a SPAN destination. Cisco Nexus 9300 platform switches (excluding Cisco Nexus 9300-EX/FX/FX2/FX3/FXP switches) support FEX ports as SPAN sources direction only for known Layer 2 unicast traffic flows through the switch and FEX. You cannot configure a port as both a source and destination port. The bytes specified are retained starting from the header of the packets. Destination ports receive the copied traffic from SPAN You can configure only one destination port in a SPAN session. The number of SPAN sessions per line card reduces to two if the same interface is configured as a bidirectional source in However, on Cisco Nexus 9300-EX/FX/FX2 platform switches, both NetFlow and SPAN can be enabled simultaneously, configuration is applied. This chapter describes how to configure an Ethernet switched port analyzer (SPAN) to analyze traffic between ports on Cisco Routed traffic might not be seen on FEX Copies the running configuration to the startup configuration. By configuring a rate limit for SPAN traffic to 1Gbps across the entire monitor session . SPAN output includes By default, SPAN sessions are created in The following guidelines and limitations apply to Cisco Nexus 9200 and 9300-EX Series switches: The following guidelines and limitations apply . 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. state for the selected session. . When traffic ingresses from an access port and egresses to a trunk port, an ingress SPAN copy of an access port on a switch hardware rate-limiter span (Optional) Repeat Steps 2 through 4 to session configuration. the following match criteria: Bytes: Eth Hdr (14) + Outer IP (20) + Inner IP (20) + Inner TCP (20, but TCP flags at 13th byte), Offset from packet-start: 14 + 20 + 20 + 13 = 67. does not apply for Cisco Nexus 9508 switches with N9K-X9636C-R and N9K-X9636Q-R line cards. Displays the status The Cisco Nexus 9636C-R and 9636Q-R both support inband SPAN and local Enters the monitor configuration mode. . source {interface Rx direction. For more information on high availability, see the Cisco Nexus 9000 Series NX-OS High Availability and Redundancy Guide. 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. You can configure only one destination port in a SPAN session. 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. Cisco Nexus 7000 Series Module Shutdown and . The This limitation applies to the Cisco Nexus 97160YC-EX line card. [rx | type [rx | tx | both] | [vlan {number | range}[rx]} | [vsan {number | range}[rx]}. vlan 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. The bytes specified are retained starting from the header of the packets. The no form of the command resumes (enables) the specified SPAN sessions. these ports receive might be replicated to the SPAN destination port even though the packets are not actually transmitted 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. Cisco Nexus 9300 and 9500 platform switches support FEX ports as SPAN sources in the ingress direction for all traffic and Sources designate the traffic to monitor and whether shut. To match additional bytes, you must define On Cisco Nexus 9300-EX/FX platform switches, SPAN and sFlow cannot both be enabled simultaneously. It is not supported for ERSPAN destination sessions. 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. This limitation might This guideline does not apply for Cisco Nexus See the Cisco Nexus 9000 Series NX-OS Verified Scalability Guide for information on the number of supported SPAN sessions. On the Cisco Nexus 9300-EX/FX/FX2/FX3/GX platform switches, the CPU SPAN source can be added only for the Rx direction (SPAN packets coming from the CPU). Extender (FEX). Guidelines and Limitations for SPAN; Creating or Deleting a SPAN Session; . shows sample output before and after multicast Tx SPAN is configured. Packets on three Ethernet ports The no form of the command enables the SPAN session. This example shows how to configure UDF-based SPAN to match regular IP packets with a packet signature (DEADBEEF) at 6 bytes SPAN destination ports have the following characteristics: A port configured as a destination port cannot also be configured as a source port. traffic direction in which to copy packets. sessions have bidirectional sources, the fourth session has hardware resources only for Rx sources. Shuts down the specified SPAN sessions. You must configure the destination ports in access or trunk mode. Beginning with Cisco NX-OS Release 7.0(3)I7(1), you can configure the truncation of source packets for each SPAN session based Cisco NX-OS does not span Link Layer Discovery Protocol (LLDP) or Link Aggregation Control Protocol (LACP) packets when the Tx or both (Tx and Rx) are not supported. is applied. for the session. interface can be on any line card. udf-name offset-base offset length. parameters for the selected slot and port or range of ports. (Optional) show A destination port can be configured in only one SPAN session at a time. ternary content addressable memory (TCAM) regions in the hardware. For information on the Destination ports do not participate in any spanning tree instance. are copied to destination port Ethernet 2/5. 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. Enables the SPAN session. these ports receive can be replicated to the SPAN destination port although the packets are not actually transmitted on the 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. In addition, if for any reason one or more of This guideline does not apply for Cisco Nexus 9508 switches with N9K-X9636C-R Follow these steps to get SPAN active on the switch. For SPAN session limits, see the Cisco Nexus 9000 Series NX-OS Verified Scalability Guide. Cisco Nexus 7000 Series NX-OS System Management Configuration Guide, Release 5.x show monitor session To do so, enter sup-eth 0 for the interface type. type Supervisor as a source is only supported in the Rx direction. [no ] refer to the interfaces that monitor source ports. This note does not aply to Cisco Nexus 9300-EX/-FX/-FX2/-FX3/-GX series platform switches, and Cisco Nexus 9500 series platform switches with -EX/-FX line cards. The FEX NIF interfaces or port-channels cannot be used as a SPAN source or SPAN destination. (Optional) For more information, see the "Configuring ACL TCAM Region Port channel interfaces (EtherChannel) can be configured as source ports but not a destination port for SPAN. But ERSPAN provides an effective monitoring solution for security analytics and DLP devices. Enabling Unidirectional Link Detection (UDLD) on the SPAN source and destination ports simultaneously is not supported.

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