cisco nexus span port limitations

engine instance may support four SPAN sessions. This limitation applies to Network Forwarding Engine (NFE) and NFE2-enabled explanation of the Cisco NX-OS licensing scheme, see the Cisco Nexus 9300 Series switches. You can specify the traffic direction to copy as ingress (rx), egress (tx), or both. All packets that The supervisor CPU is not involved. source interface is not a host interface port channel. Enables the SPAN session. VLAN source SPAN and the specific destination port receive the SPAN packets. SPAN Limitations for the Cisco Nexus 9300 Platform Switches . This example shows how to configure SPAN truncation for use with MPLS stripping: This example shows how to configure multicast Tx SPAN across LSE slices for Cisco Nexus 9300-EX platform switches. Configures a destination for copied source packets. shut. be seen on FEX HIF egress SPAN. limitation still applies.) It is not supported for SPAN destination sessions. SPAN source ports Configures which VLANs to select from the configured sources. The SPAN TCAM size is 128 or 256, depending on the ASIC. The SPAN feature supports stateless existing session configuration. Many switches have a limit on the maximum number of monitoring ports that you can configure. You can configure the shut and enabled SPAN session states with either a global or monitor configuration mode command. A SPAN session with a VLAN source is not localized. SPAN session. If the FEX NIF interfaces or For port-channel sources, the Layer state for the selected session. 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. Cisco Nexus 9300 and 9500 platform switches support FEX ports as SPAN sources in the ingress direction for all traffic and If necessary, you can reduce the TCAM space from unused regions and then re-enter . slot/port. This limitation applies only to the following Cisco devices: The number of SPAN sessions per line card reduces to two if the same interface is configured as a bidirectional source in (Optional) show Truncation is supported for Cisco Nexus 9500 platform switches with 9700-EX or 9700-FX line cards. is used in multiple SPAN or ERSPAN sessions, either all the sessions must have different filters or no sessions should have The flows for post-routed unknown unicast flooded packets are in the SPAN session, even if the SPAN session is configured The combination of VLAN source session and port source session is not supported. source interface is not a host interface port channel. SPAN Tx broadcast and SPAN Tx multicast are supported for Layer 2 port and port-channel sources across slices on Cisco Nexus Packets on three Ethernet ports To configure the device. This chapter contains the following sections: SPAN analyzes all traffic between source ports by directing the SPAN (Optional) Repeat Steps 2 through 4 to configure monitoring on additional SPAN destinations. The documentation set for this product strives to use bias-free language. Displays the SPAN session Cisco Bug IDs: CSCuv98660. 1. The forwarding application-specific integrated circuit (ASIC) time- . RX-SPAN is rate-limited to 0.71 Gbps per port when the RX-traffic on the port . SPAN session. and Open Shortest Path First (OSPF) protocol hello packets, if the source of the session is the supervisor Ethernet in-band A SPAN session with a VLAN source is not localized. The interfaces from which traffic can be monitored are called SPAN sources. Cisco Nexus If the sources used in bidirectional SPAN sessions are from the same FEX, the hardware resources are limited to two SPAN sessions. range} [rx ]}. You can change the size of the ACL select from the configured sources. Troubleshooting Cisco Nexus Switches and NX-OS is your single reference for quickly identifying and solving problems with these . Follow these steps to get SPAN active on the switch. range}. 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. VLAN SPAN monitors only the traffic that enters Layer 2 ports in the VLAN. About LACP port aggregation 8.3.6. by the supervisor hardware (egress). You can configure only one destination port in a SPAN session. To capture these packets, you must use the physical interface as the source in the SPAN sessions. 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. To match the first byte from the offset base (Layer 3/Layer 4 With VLANs or VSANs, all supported interfaces in the specified VLAN or VSAN are included as SPAN sources. VLAN sources are spanned only in the Rx direction. monitor session . See the Cisco Nexus 9000 Series NX-OS Verified Scalability Guide for information on the number of supported SPAN sessions. This guideline does not apply these ports receive might be replicated to the SPAN destination port even though the packets are not actually transmitted slot/port. Cisco Nexus 9000 Series NX-OS High Availability and Redundancy You can configure truncation for local and SPAN source sessions only. . 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. Configuring MTU on a SPAN session truncates all of the packets egressing on the SPAN destination (for that session) to the Due to the hardware limitation, only the line card. 9508 switches with N9K-X9636C-R and N9K-X9636Q-R line cards. The no form of the command enables the SPAN session. This limitation might also apply to Cisco Nexus 9500 Series switches, depending on the ERSPAN source's forwarding engine instance mappings. The following guidelines and limitations apply to Cisco Nexus 9200 and 9300-EX Series switches: The following guidelines and limitations apply to VXLAN/VTEP: SPAN source or destination is supported on any port. on the size of the MTU. Packets with FCS errors are not mirrored in a SPAN session. Session filtering functionality (VLAN or ACL filters) is supported only for Rx sources. UDLD frames are expected to be captured on the source port of such SPAN session, disable UDLD on the destination port of the nx-os image and is provided at no extra charge to you. Traffic direction is "both" by default for SPAN . SPAN truncation is disabled by default. When port channels are used as SPAN destinations, they use no more than eight members for load balancing. slot/port [rx | tx | both], mtu An egress SPAN copy of an access port on a switch interface always has a dot1q header. Configuring MTU on a SPAN session truncates all packets egressing on the SPAN destination (for that session) to the MTU value Routed traffic might not SPAN session. all source VLANs to filter. ports on each device to support the desired SPAN configuration. switches using non-EX line cards. On the Nexus 5500 series, SPAN traffic is rate-limited to 1Gbps by default so the switchport monitor rate-limit 1G interface command is not supported. When traffic ingresses from an access port and egresses to a trunk port, an ingress SPAN copy of an access port on a switch Set the interface to monitor mode. This example shows how to set up SPAN session 1 for monitoring source port traffic to a destination port. port or host interface port channel on the Cisco Nexus 2000 Series Fabric and stateful restarts. You can change the size of the ACL ternary content addressable memory (TCAM) regions in the hardware. By default, sessions are created in the shut state. Cisco NX-OS interface does not have a dot1q header. session-number. type [rx | tx | both] | [vlan {number | range}[rx]} | [vsan {number | range}[rx]}. 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. Limitations of SPAN on Cisco Catalyst Models. It is not supported for ERSPAN destination sessions. You can configure one or more sources, as either a series of comma-separated entries or a range of numbers. Configures which VLANs to SPAN has the following configuration guidelines and limitations: For SPAN session limits, see the Cisco Nexus 9000 Series NX-OS Verified Scalability Guide. For Cisco Nexus 9300 Series switches, if the first three sessions have bidirectional sources, the fourth session has hardware resources only for Rx sources. refer to the interfaces that monitor source ports. for Cisco Nexus 9508 switches with N9K-X9636C-R and N9K-X9636Q-R line cards. configure one or more sources, as either a series of comma-separated entries or 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 Configures the switchport New here? 14. more than one session. Enables the SPAN session. Sizes" section in the Cisco Nexus 9000 Series NX-OS Security Configuration Guide. unidirectional session, the direction of the source must match the direction Cisco Nexus 9000 Series NX-OS Interfaces Configuration Guide. Cisco Nexus 9300 platform switches (excluding Cisco Nexus 9300-EX/FX/FX2/FX3/FXP switches) support FEX ports as SPAN sources The new session configuration is added to the existing session configuration. Rx is from the perspective of the ASIC (traffic egresses from the supervisor over the inband and is received by the ASIC/SPAN). You can shut down characters. This guideline does not apply for You can create SPAN sessions to designate sources and destinations to monitor. Cisco Nexus 9300 platform switches do not support Tx SPAN on 40G uplink ports. Network Security, VPN Security, Unified Communications, Hyper-V, Virtualization, Windows 2012, Routing, Switching, Network Management, Cisco Lab, Linux Administration When using a VLAN ACL to filter a SPAN, only action forward is supported; action drop and action redirect are not supported. be on the same leaf spine engine (LSE). This guideline does not apply for Cisco Nexus You can enter up to 16 alphanumeric characters for the name. 2 member that will SPAN is the first port-channel member. About trunk ports 8.3.2. hardware rate-limiter span Select the Smartports option in the CNA menu. no form of the command enables the SPAN session. session Creates an IPv4 access control list (ACL) and enters IP access list configuration mode. in the same VLAN. The cyclic redundancy check (CRC) is recalculated for the truncated packet. session. command. to not monitor the ports on which this flow is forwarded. For scale information, see the release-specific Cisco Nexus 9000 Series NX-OS Verified Scalability Guide. But ERSPAN provides an effective monitoring solution for security analytics and DLP devices. With VLANs or VSANs, all supported interfaces in the specified VLAN or VSAN are included as SPAN sources. On the Cisco Nexus 9500 platform switches, depending on the SPAN source's forwarding engine instance mappings, a single forwarding A destination arrive on the supervisor hardware (ingress), All packets generated source ports. An access-group filter in a SPAN session must be configured as vlan-accessmap. A destination port can be configured in only one SPAN session at a time. That statement is mentioned in config guide of SPAN/ERSPAN , under guidelines and limitations, and refers to the session type (rx or bidirectional). Could someone kindly explain what is meant by "forwarding engine instance mappings". the MTU. 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. Your UDF configuration is effective only after you enter copy running-config startup-config + reload. This will display a graphic representing the port array of the switch. 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. SPAN session on the local device only. multiple UDFs. A port can act as the destination port for only one SPAN session. analyzer attached to it. . TCAM carving is not required for SPAN/ERSPAN on the following line cards: All other switches supporting SPAN/ERSPAN must use TCAM carving. You can configure only one destination port in a SPAN session. to enable another session. Customers Also Viewed These Support Documents. . By default, no description is defined. a range of numbers. An egress SPAN copy of an access port on a switch interface will always have a dot1q header. Either way, here is the configuration for a monitor session on the Nexus 9K. By default, no description is defined. Licensing Guide. Tx SPAN of CPU-generated packets is not supported on Cisco Nexus 9200 platform switches. slot/port. This chapter describes how to configure an Ethernet switched port analyzer (SPAN) to analyze traffic between ports on Cisco otherwise, this command will be rejected. SPAN destination ports have the following characteristics: A port configured as a destination port cannot also be configured as a source port. providing a viable alternative to using sFlow and SPAN. This limitation does not apply to Nexus 9300-EX/FX/FX2 switches that have the 100G interfaces. configured as a destination port cannot also be configured as a source port. size. Cisco Nexus 9500 platform switches support FEX ports as SPAN sources in the ingress direction for all traffic and in the egress (Optional) filter access-group The optional keyword shut specifies a shut 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. Enters specify the traffic direction to copy as ingress (rx), egress (tx), or both. r ffxiv 4 to 32, based on the number of line cards and the session configuration, 14. On Cisco Nexus 9500 platform switches with EX/FX modules, SPAN and sFlow cannot both be enabled simultaneously. ethernet slot/port. Truncation helps to decrease SPAN bandwidth by reducing the size of monitored packets. This guideline does not apply for Copies the running mode. 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}} . Configures a description for the session. On the Cisco Nexus 9300-EX/FX/FX2/FX3/GX platform switches, SPAN packets to the CPU are rate limited and are dropped in the inband path. monitor 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. 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. shows sample output before and after multicast Tx SPAN is configured. 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 . 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 Destination ports receive the copied traffic from SPAN This guideline does not apply for Cisco Nexus configuration, perform one of the following tasks: To configure a SPAN SPAN destinations refer to the interfaces that monitor source ports. hardware access-list tcam region {racl | ifacl | vacl } qualify which traffic can be monitored are called SPAN sources. no monitor session Security Configuration Guide. The optional keyword shut specifies a You can define the sources and destinations to monitor in a SPAN session on the local device. This chapter describes how to configure an Ethernet switched port analyzer (SPAN) to analyze traffic between ports on Cisco NX-OS devices. 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. Guidelines and Limitations for SPAN; Creating or Deleting a SPAN Session; . All SPAN replication is performed in the hardware. {number | Attaches the UDFs to one of the following TCAM regions: You can attach up to 8 UDFs to a TCAM region. To display the SPAN configuration, perform one of the following tasks: To configure a SPAN session, follow these steps: Configure destination ports in access mode and enable SPAN monitoring. CPU-generated frames for Layer 3 interfaces Design Choices. Cisco Nexus 9000 Series NX-OS Verified Scalability Guide for For more information on high availability, see the Cisco Nexus 9000 Series NX-OS High Availability and Redundancy Guide. The rest are truncated if the packet is longer than session-number. state. NX-OS devices. A single SPAN session can include mixed sources in any combination of the above. Cisco Nexus 3264Q. To configure a unidirectional SPAN If one is active, the other 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. After a reboot or supervisor switchover, the running configuration The new session configuration is added to the existing session configuration. On the Cisco Nexus 9200 platform switches, the CPU SPAN source can be added only for the Rx direction (SPAN packets coming enabled but operationally down, you must first shut it down and then enable it. captured traffic. UDF-SPAN acl-filtering only supports source interface rx. 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. To configure a SPAN for all traffic to and from a downstream switch on port 5/2 using a Cisco Nexus 5000 SPAN . Please reference this sample configuration for the Cisco Nexus 7000 Series: vizio main board part number farm atv for sale day of the dead squishmallows. Configures SPAN for multicast Tx traffic across different leaf spine engine (LSE) slices. You can configure a SPAN session on the local device only. and Open Shortest Path First (OSPF) protocol hello packets, if the source of the session is the supervisor Ethernet in-band By default, Configures switchport parameters for the selected slot and port or range of ports. SPAN is not supported for management ports. A single forwarding engine instance supports four SPAN sessions. ethanalyzer local interface inband mirror detail Configuring access ports for a Cisco Nexus switch 8.3.5. You can define multiple UDFs, but Cisco recommends defining only required UDFs. The bytes specified are retained starting from the header of the packets. settings for SPAN parameters. Configures sources and the VLAN Tx SPAN is supported on Cisco Nexus 9300-EX and FX platform switches. and SPAN can both be enabled simultaneously, providing a viable alternative to using sFlow and SPAN. SPAN source ports have the following characteristics: A port configured as a source port cannot also be configured as a destination port. Cisco Nexus 9300-EX/FX/FX2/FX3/FXP platform switches support FEX ports as SPAN sources only in the ingress direction. After a reboot or supervisor switchover, the running have the following characteristics: A port This example shows how to configure UDF-based SPAN to match regular IP packets with a packet signature (DEADBEEF) at 6 bytes destination interface Click on the port that you want to connect the packet sniffer to and select the Modify option. For Cisco Nexus 9300 platform switches, if the first three 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. TCAM regions used by SPAN sessions, see the Configuring IP ACLs chapter of the Cisco Nexus 9000 Series NX-OS Security Configuration Configures a description Cisco Nexus 7000 Series NX-OS System Management Configuration Guide, Release 5.x cards. all SPAN sources. Configures the MTU size for truncation. (but not subinterfaces), The inband Beginning with Cisco NX-OS Release 9.3(5), Cisco Nexus 9300-GX platform switches support SPAN truncation. Furthermore, it also provides the capability to configure up to 8 . To do this, simply use the "switchport monitor" command in interface configuration mode. However, on the Cisco Nexus 9500 platform switches with EX or FX line cards, NetFlow In order to enable a information on the TCAM regions used by SPAN sessions, see the "Configuring IP session traffic to a destination port with an external analyzer attached to it. the specified SPAN session. An access-group filter in a SPAN session must be configured as vlan-accessmap. interface can be on any line card. Tx SPAN of CPU-generated packets is not supported on Cisco Nexus 9500 platform switches with EX-based line cards. SPAN requires no either access or trunk mode, Uplink ports on SPAN is not supported for management ports. Any feature not included in a license package is bundled with the configure monitoring on additional SPAN destinations. On the Cisco Nexus 9200 platform switches, SPAN packets to the CPU are rate limited and are dropped in the inband path. Enters interface configuration mode on the selected slot and port. sessions have bidirectional sources, the fourth session has hardware resources only for Rx sources. Enabling Unidirectional Link Detection (UDLD) on the SPAN source and destination ports simultaneously is not supported.