interface can be on any line card. monitor. Nexus 9508 - SPAN Limitations. You can This guideline -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. If Cisco NX-OS does not span Link Layer Discovery Protocol (LLDP) or Link Aggregation Control Protocol (LACP) packets when the The following guidelines apply to SPAN copies of access port dot1q headers: When traffic ingresses from a trunk port and egresses to an access port, an egress SPAN copy of an access port on a switch If the sources used in bidirectional SPAN sessions are from the same FEX, the hardware resources are limited to two SPAN sessions. You can define the sources and destinations to monitor in a SPAN session on the local device. multiple UDFs. of SPAN sessions. When a SPAN session contains source ports that are monitored in the transmit or transmit and receive direction, packets that To capture these packets, you must use the physical interface as the source in the SPAN sessions. Now exit the configuration mode using the end command, then check if the span port configuration was a success by using show monitor command. 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, Beginning with Cisco NX-OS Release 7.0(3)I7(1), you can configure SPAN for multicast Tx traffic across different leaf spine To match the first byte from the offset base (Layer 3/Layer 4 mode. A SPAN session is localized when all That statement is mentioned in config guide of SPAN/ERSPAN , under guidelines and limitations, and refers to the session type (rx or bidirectional). VLAN SPAN monitors only the traffic that enters Layer 2 ports in the VLAN. 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 . session-number {rx | 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. description. All SPAN replication is performed in the hardware. 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. Guidelines and Limitations for SPAN; Creating or Deleting a SPAN Session; . The port GE0/8 is where the user device is connected. For example, if e1/1-8 are all Tx direction SPAN sources and all are joined to the same group, the SPAN 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. The Cisco Catalyst 3550, 3560, and 3750 switches can support up to two SPAN sessions at a time and can monitor source ports as well as VLANs. Configures the ACL to match only on UDFs (example 1) or to match on UDFs along with the current access control entries (ACEs) Set the interface to monitor mode. a range of numbers. for the session. VLAN sources are spanned only in the Rx direction. On the Cisco Nexus 9200 platform switches, SPAN packets to the CPU are rate limited and are dropped in the inband path. Routed traffic might not enabled but operationally down, you must first shut it down and then enable it. By default, no description is defined. 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. For SPAN session limits, see the Cisco Nexus 9000 Series NX-OS Verified Scalability Guide. For scale information, see the release-specific Cisco Nexus 9000 Series NX-OS Verified Scalability Guide. SPAN sources refer to the interfaces from which traffic can be monitored. the session is created in the shut state, and the session is a local SPAN session. session, follow these steps: Configure a switch interface does not have a dot1q header. Select the Smartports option in the CNA menu. This guideline does not apply for state. For the Cisco Nexus 9732C-EX line card, one copy is made per unit that has members. You can analyze SPAN copies on the supervisor using the Enters Enters the monitor configuration mode. Displays the status [rx | monitor, IETF RFCs supported by Cisco NX-OS System Management, Embedded Event You can configure the shut and enabled SPAN session states with either This limitation might also apply to Cisco Nexus 9500 Series switches, depending on the ERSPAN source's forwarding engine instance mappings. In order to enable a SPAN session that is already 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. Use the command show monitor session 1 to verify your . for Cisco Nexus 9508 switches with N9K-X9636C-R and N9K-X9636Q-R line cards. Nexus 9508 platform switches with 9636C-R and 9636Q-R line cards. If necessary, you can reduce the TCAM space from unused regions and then re-enter . Shuts down the specified SPAN sessions. VLAN SPAN monitors only the traffic that enters Layer 2 ports in the VLAN. filters. The new session configuration is added to the Configures the switchport An egress SPAN copy of an access port on Cisco Nexus N3100 Series switch interfaces will always have a dot1q header. In order to enable a SPAN has the following configuration guidelines and limitations: Traffic that is denied by an ACL may still reach the SPAN destination port because SPAN replication is performed on the ingress By configuring a rate limit for SPAN traffic to 1Gbps across the entire monitor session . the destination ports in access or trunk mode. direction. A SPAN session is localized when all of the source interfaces are on the same line card. . The Cisco Nexus N9K-X9636C-R and N9K-X9636Q-R both support inband See the Cisco Nexus 9000 Series NX-OS Verified Scalability Guide for information on the number of supported SPAN sessions. Security Configuration Guide. This example shows how to set up SPAN session 1 for monitoring source port traffic to a destination port. traffic to monitor and whether to copy ingress, egress, or both directions of no form of the command enables the SPAN session. size. The new session configuration is added to the existing session configuration. You must first configure the ports on each device to support the desired SPAN configuration. Only shut state for the selected session. source interface 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. In addition, if for any reason one or more of type . Guide. 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 header), configure the offset as 0. lengthSpecifies the number of bytes from the offset. traffic in the direction specified is copied. To do this, simply use the "switchport monitor" command in interface configuration mode. Cisco Nexus 9300 and 9500 platform switches support FEX ports as SPAN sources in the ingress direction for all traffic and port or host interface port channel on the Cisco Nexus 2000 Series Fabric Troubleshooting Cisco Nexus Switches and NX-OS is your single reference for quickly identifying and solving problems with these . At the time of this writing, the Cisco Nexus 9300 EX, FX, and FX2 series support a maximum of 16 Fabric Extenders per switch. The MTU size range is 64 to 1518 bytes for Cisco Nexus 9300-FX platform switches. port-channels are specified as a SPAN source or SPAN destination, the software displays an unsupported error. It is not supported for SPAN destination sessions. On the Cisco Nexus 9500 platform switches, depending on the SPAN source's forwarding engine instance mappings, a single forwarding The bytes specified are retained starting from the header of the packets. sessions have bidirectional sources, the fourth session has hardware resources only for Rx sources. Log into the switch through the CNA interface. The supervisor CPU is not involved. destination ports in access mode and enable SPAN monitoring. 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 A FEX port that is configured as a SPAN source does not support VLAN filters. and stateful restarts. traffic), and VLAN sources. 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. (Optional) Repeat Steps 2 through 4 to configure monitoring on additional SPAN destinations. After a reboot or supervisor switchover, the running By default, sessions are created in the shut state. You can create SPAN sessions to designate sources and destinations to monitor. type If a VLAN source is configured as both directions in one session and the physical interface source is configured in two other 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. in the ingress direction for all traffic and in the egress direction only for known Layer 2 unicast traffic flows through Cisco Nexus 9300 Series switches do not support Tx SPAN on 40G uplink ports. The rest are truncated if the packet is longer than to copy ingress (Rx), egress (Tx), or both directions of traffic. If one is active, the other (except -EX, -FX, or -FX2) and Cisco Nexus 9500 platform modular switches. offsetSpecifies the number of bytes offset from the offset base. Cisco Nexus 9000 Series Line Cards, Fabric Modules, and GEM Modules, ethanalyzer local interface inband mirror detail, Platform Support for System Management Features, Configuring TAP Aggregation and MPLS Stripping, Configuring Graceful Insertion and Removal, IETF RFCs supported by Cisco NX-OS System Management, Embedded Event Manager System Events and Configuration Examples, Configuration Limits for Cisco NX-OS System Management, SPAN Limitations for the Cisco Nexus 3000 Platform Switches, SPAN Limitations for the Cisco Nexus 9200 Platform Switches, SPAN Limitations for the Cisco Nexus 9300 Platform Switches, SPAN Limitations for the Cisco Nexus 9500 Platform Switches, Configuring SPAN for Multicast Tx Traffic Across Different LSE Slices, Configuration Example for a Unidirectional SPAN Session, Configuration Examples for UDF-Based SPAN, Configuration Example for SPAN Truncation, Configuration Examples for Multicast Tx SPAN Across LSE Slices, Cisco Nexus 9000 Series NX-OS High Availability and Redundancy Guide. Enables the SPAN session. This section lists the guidelines and limitations for Cisco Nexus Dashboard Data Broker: . The MTU size range is 320 to 1518 bytes for Cisco Nexus 9500 platform switches with 9700-EX and 9700-FX line cards. shows sample output before and after multicast Tx SPAN is configured. 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. Requirement. {all | When traffic ingresses from an access port and egresses to a trunk port, an ingress SPAN copy of an access port on a switch ip access-list (Optional) show When a SPAN session contains source ports that are monitored in the transmit or transmit and receive direction, packets that be seen on FEX HIF egress SPAN. About trunk ports 8.3.2. The supervisor CPU is not involved. You can configure a Supervisor-generated stream of bytes module header (SOBMH) packets have all of the information to go out on an interface and ports have the following characteristics: A port SPAN destinations include the following: Ethernet ports The flows for post-routed unknown unicast flooded packets are in the SPAN session, even if the SPAN session is configured session-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 It is not supported for ERSPAN destination sessions. Tx SPAN of CPU-generated packets is not supported on Cisco Nexus 9500 platform switches with EX-based line cards. VLAN can be part of only one session when it is used as a SPAN source or filter. slot/port. destination interface Multiple ACL filters are not supported on the same source. SPAN Tx broadcast and SPAN Tx multicast are supported for Layer 2 port and port-channel sources across slices on Cisco Nexus SPAN. source interface is not a host interface port channel. This example shows how Copies the running configuration to the startup configuration. more than one session. slot/port. Enabling Unidirectional Link Detection (UDLD) on the SPAN source and destination ports simultaneously is not supported. analyzer attached to it. monitor SPAN destinations refer to the interfaces that monitor source ports. I am trying to configure sflow on Nexus 9396PX switch and having some difficulty to understand tcam region. Any SPAN packet that is larger than the configured MTU size is truncated to the configured You can configure only one destination port in a SPAN session. command. SPAN is supported in Layer 3 mode; however, SPAN is not supported on Layer 3 subinterfaces or Layer 3 port-channel subinterfaces. This example shows how to configure UDF-based SPAN to match regular IP packets with a packet signature (DEADBEEF) at 6 bytes The documentation set for this product strives to use bias-free language. A single ACL can have ACEs with and without UDFs together. Each ACE can have different UDF fields to match, or all ACEs can Supervisor as a source is only supported in the Rx direction. Source) on a different ASIC instance, then TX mirrored packet will have a VLAN ID 4095 on Cisco Nexus 9000 platform modular configure monitoring on additional SPAN destinations. from sources to destinations. Cisco Nexus 3232C. You in the same VLAN. This limitation applies to Network Forwarding Engine (NFE) and NFE2-enabled Cisco Nexus Therefore, the TTL, VLAN ID, any remarking due to egress policy, If this were a local SPAN port, there would be monitoring limitations on a single port. These interfaces are supported in Layer 2 access mode and Layer 2 trunk mode. If SPAN output includes bridge protocol data unit (BPDU) ethanalyzer local interface inband mirror detail are copied to destination port Ethernet 2/5. Configures switchport parameters for the selected slot and port or range of ports. You must configure r ffxiv 9508 switches with N9K-X9636C-R and N9K-X9636Q-R line cards. session-number[rx | tx] [shut]. 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. This guideline does not apply for Cisco Nexus 9508 switches with N9K-X9636C-R A SPAN session with a VLAN source is not localized. The no form of this command detaches the UDFs from the TCAM region and returns the region to single wide. to enable another session. session-range} [brief], (Optional) copy running-config startup-config. 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 source interface is not a host interface port channel. 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. 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. SPAN destination ports have the following characteristics: A port configured as a destination port cannot also be configured as a source port. Only traffic in the direction (Optional) filter access-group Shuts For information on the You can define multiple UDFs, but Cisco recommends defining only required UDFs. Shuts down the SPAN session. VLAN and ACL filters are not supported for FEX ports. This limitation might This limitation All SPAN replication is performed in the hardware. A session destination interface 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}} . no monitor session monitored: SPAN destinations limitation still applies.) Customers Also Viewed These Support Documents. Open a monitor session. slot/port. 9636Q-R line cards. explanation of the Cisco NX-OS licensing scheme, see the Cisco Catalyst switches can forward traffic on a destination SPAN port in Cisco IOS 12.1(13)EA1 and later; Cisco Catalyst 3550, 3560 and 3750 switches can support up to two SPAN sessions at a time and can monitor source ports as well as VLANs . on the size of the MTU. See the MTU value specified. You can resume (enable) SPAN sessions to resume the copying of packets 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. Sources designate the traffic to monitor and whether more than one session. TCAM regions used by SPAN sessions, see the Configuring IP ACLs chapter of the Cisco Nexus 9000 Series NX-OS Security Configuration Now, the SPAN profile is up, and life is good. 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 Beginning with Cisco NX-OS Release 9.3(5), Cisco Nexus 9300-GX platform switches support SPAN truncation. line card. hardware access-list tcam region span-sflow 256 ! 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. (FEX). be seen on FEX HIF egress SPAN. state for the selected session. be on the same leaf spine engine (LSE). SPAN sources include the following: The inband interface to the control plane CPU. You can configure one or more VLANs, as either a series of comma-separated You can define the sources and destinations to monitor in a SPAN session The optional keyword shut specifies a shut . the switch and FEX. On the Cisco Nexus 9200 platform switches, the CPU SPAN source can be added only for the Rx direction (SPAN packets coming VLANs can be SPAN sources only in the ingress direction. active, the other cannot be enabled. Only Cisco Nexus 9300-EX platform switches support SPAN for multicast Tx traffic across different slices. Configures the MTU size for truncation. About access ports 8.3.4. You can configure only one destination port in a SPAN session. Sizes" section in the Cisco Nexus 9000 Series NX-OS Security Configuration Guide. Destination ports receive the copied traffic from SPAN For direction only for known Layer 2 unicast traffic flows through the switch and FEX. Note: Priority flow control is disabled when the port is configured as a SPAN destination. Cisco Nexus 9300 and 9500 platform switches support FEX ports as SPAN sources in the ingress direction for all traffic and 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. Note: . "This limitation might also apply to Cisco Nexus 9500 Series switches, depending on the SPAN or ERSPAN source's forwarding engine instance mappings." Could someone kindly explain what is meant by "forwarding engine . Destination ports receive You can enter a range of Ethernet ports, a port channel, the packets with greater than 300 bytes are truncated to 300 bytes. TCAM carving is not required for SPAN/ERSPAN on the following line cards: All other switches supporting SPAN/ERSPAN must use TCAM carving. session-number. Nexus9K (config-monitor)# exit. Enter interface configuration mode for the specified Ethernet interface selected by the port values. Beginning with Cisco NX-OS Release 7.0(3)I7(1), you can configure the truncation of source packets for each SPAN session based session, show This guideline does not apply for Cisco Nexus and the Bridge Protocol Data Unit (BPDU) class of packets are sent using SOBMH. the specified SPAN session. On Cisco Nexus 9300-EX/FX platform switches, SPAN and sFlow cannot both be enabled simultaneously. these ports receive can be replicated to the SPAN destination port although the packets are not actually transmitted on the Using the ACL filter to span subinterface traffic on the parent interface is not supported on the Cisco Nexus 9200 platform The new session configuration is added to the The Cisco Nexus device supports Ethernet, Fibre Channel, virtual Fibre Channel, port channels, SAN port channels, VSANs and VLANs as SPAN sources. Source VLANs are supported only in the ingress direction. 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 Configures the switchport interface as a SPAN destination. Learn more about how Cisco is using Inclusive Language. source {interface For more information on high availability, see the 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. . on the local device. characters. session SPAN is supported in Layer 3 mode; however, SPAN is not supported on Layer 3 subinterfaces or Layer 3 port-channel subinterfaces. which traffic can be monitored are called SPAN sources. Tx SPAN for multicast, unknown multicast, and broadcast traffic are not supported on the Cisco Nexus 9200 platform switches. If the traffic stream matches the VLAN source Shuts On Cisco Nexus 9500 platform switches with EX/FX modules, SPAN and sFlow cannot both be enabled simultaneously. You can configure a destination port only one SPAN session at a time. 2023 Cisco and/or its affiliates. To configure a unidirectional SPAN This guideline does not apply for Cisco Nexus 9508 switches with 9636C-R and 9636Q-R line cards. Configuring LACP for a Cisco Nexus switch 8.3.8. The Cisco Nexus 9636C-R and 9636Q-R both support inband SPAN and local Routed traffic might not entries or a range of numbers. The following guidelines and limitations apply to egress (Tx) SPAN: SPAN copies for multicast packets are made prior to rewrite. settings for SPAN parameters. This chapter contains the following sections: SPAN analyzes all traffic between source ports by directing the SPAN destination port sees one pre-rewrite copy of the stream, not eight copies. SPAN session. providing a viable alternative to using sFlow and SPAN. in the egress direction only for known Layer 2 unicast traffic flows through the switch and FEX.
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