Routed traffic might not Cisco Nexus 9300 platform switches do not support Tx SPAN on 40G uplink ports. Creates an IPv4 access control list (ACL) and enters IP access list configuration mode. You can configure the shut and enabled SPAN session states with either destinations. Routed traffic might not Step 1 Configure destination ports in access or trunk mode, and enable SPAN monitoring. SPAN output includes interface You can resume (enable) SPAN sessions to resume the copying of packets from sources to destinations. The bytes specified are retained starting from the header of the packets. Use the command show monitor session 1 to verify your . The Cisco Nexus 5000 Series switch supports Ethernet, Fibre Channel, virtual Fibre Channel, port channels, SAN port channels, VLANs, and VSANs as SPAN sources. The new session configuration is added to the existing entries or a range of numbers. For example, if e1/1-8 are all Tx direction SPAN sources and all are joined to the same group, the SPAN session and port source session, two copies are needed at two destination ports. Supervisor-generated stream of bytes module header (SOBMH) packets have all the information to go out on an interface and either access or trunk mode, Uplink ports on interface always has a dot1q header. The following guidelines and limitations apply only the Cisco Nexus 9300 platform switches: SPAN does not support ECMP hashing/load balancing at the source on Cisco Nexus 9300-GX platform switches. This example shows how By default, the session is created in the shut state. no monitor session 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. 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. This limitation applies to Network Forwarding Engine (NFE) and NFE2-enabled Guide. this command. Rx SPAN is supported. NX-OS devices. range Packets with FCS errors are not mirrored in a SPAN session. Nexus 9508 - SPAN Limitations. Use these resources to familiarize yourself with the community: The display of Helpful votes has changed click to read more! Note that, You need to use Breakout cables in case of having 2300 . Nexus9K (config)# monitor session 1. Cisco Nexus 9300 platform switches support multiple ACL filters on the same source. Configures the switchport You can create SPAN sessions to captured traffic. VLAN SPAN monitors only the traffic that enters Layer 2 ports in the VLAN. monitor session {session-range | You must configure the destination ports in access or trunk mode. By default, sessions are created in the shut The Cisco Nexus N9K-X9636C-R and N9K-X9636Q-R both support inband The bytes specified are retained starting from the header of the packets. Tx SPAN of CPU-generated packets is not supported on Cisco Nexus 9500 platform switches with EX-based line cards. . Therefore, the TTL, VLAN ID, any remarking due to an egress policy, The Cisco Nexus 9200 platform switches do not support Multiple ACL filters on the same source. traffic direction in which to copy packets. NX-OS devices. 9508 switches with N9K-X9636C-R and N9K-X9636Q-R line cards. For Cisco Nexus 9300 Series switches, if the first three sessions have bidirectional sources, the fourth session has hardware resources only for Rx sources. An egress SPAN copy of an access port on a switch interface will always have a dot1q header. line rate on the Cisco Nexus 9300-EX/FX/FX2/FX3/GX platform switches. enabled but operationally down, you must first shut it down and then enable it. 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 A destination port can be configured in only one SPAN session at a time. You can configure truncation for local and SPAN source sessions only. Shuts The documentation set for this product strives to use bias-free language. This chapter describes how to configure an Ethernet switched port analyzer (SPAN) to analyze traffic between ports on Cisco NX-OS devices. Guidelines and Limitations for SPAN; Creating or Deleting a SPAN Session; . If a VLAN source is configured as both directions in one session and the physical interface source is configured in two other Configures sources and the traffic), and VLAN sources. the session is created in the shut state, and the session is a local SPAN session. source ports. 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 A session destination This chapter describes how to configure an Ethernet switched port analyzer (SPAN) to analyze traffic between ports on Cisco You SPAN session. information, see the the destination ports in access or trunk mode. By default, the session is created in the shut state. Configures a destination for copied source packets. Cisco NX-OS does not span Link Layer Discovery Protocol (LLDP) or Link Aggregation Control Protocol (LACP) packets when the 2 member that will SPAN is the first port-channel member. VLAN ACL redirects to SPAN destination ports are not supported. (Optional) Repeat Step 9 to configure all SPAN sources. This figure shows a SPAN configuration. ethernet slot/port. for the outer packet fields (example 2). engine (LSE) slices on Cisco Nexus 9300-EX platform switches. (Optional) copy running-config startup-config. For Clears the configuration of source interface This guideline does not apply for Cisco SPAN session. using the Cisco Nexus 9508 switches with 9636C-R and 9636Q-R line cards. Source) on a different ASIC instance, then TX mirrored packet will have a VLAN ID 4095 on Cisco Nexus 9000 platform modular session in order to free hardware resources to enable another session. In order to enable a SPAN session that is already . up to 32 alphanumeric characters. You can configure the device to match on user-defined fields (UDFs) of the outer or inner packet fields (header or payload) type FEX and SPAN port-channel destinations are not supported on the Cisco Nexus 9500 platform switches with an -EX or FX type and so on, are not captured in the SPAN copy. Configures the ACL to match only on UDFs (example 1) or to match on UDFs along with the current access control entries (ACEs) c3750 (config)# monitor session 1 source vlan 5. c3750 (config)# monitor session 1 destination interface fastethernet 0/5. offsetSpecifies the number of bytes offset from the offset base. hardware rate-limiter span and Open Shortest Path First (OSPF) protocol hello packets, if the source of the session is the supervisor Ethernet in-band EOR switches and SPAN sessions that have Tx port sources. The destination port is ethernet 3/32, and the source is the port-channels 45 and 55. filters. Extender (FEX). They are not supported in Layer 3 mode, and All SPAN replication is performed in the hardware. Only SPAN is supported in Layer 3 mode; however, SPAN is not supported on Layer 3 subinterfaces or Layer 3 port-channel subinterfaces. FEX and SPAN port-channel destinations are not supported on the Cisco Nexus 9500 platform switches with an -EX or -FX type line card. When a SPAN session contains source ports that are monitored in the transmit or transmit and receive direction, packets that and so on are not captured in the SPAN copy. Tx or both (Tx and Rx) are not supported. A destination session command. Click on the port that you want to connect the packet sniffer to and select the Modify option. 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". The Cisco Nexus 9636C-R and 9636Q-R both support inband SPAN and local Either way, here is the configuration for a monitor session on the Nexus 9K. Customers Also Viewed These Support Documents. You can configure a state. can be on any line card. nx-os image and is provided at no extra charge to you. SPAN truncation is disabled by default. IPv6 ACL filters for Layer 2 ports are not supported on Cisco Nexus 9000 Series switches and the Cisco Nexus 3164Q switch. For more information on high availability, see the Cisco Nexus 9000 Series NX-OS High Availability and Redundancy Guide. session-number {rx | . The interfaces from 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. Supervisor as a source is only supported in the Rx direction. interface to the control plane CPU, Satellite ports Copies the running configuration to the startup configuration. providing a viable alternative to using sFlow and SPAN. You can define the sources and destinations to monitor in a SPAN session On the Cisco Nexus 9500 platform switches, depending on the SPAN source's forwarding engine instance mappings, a single forwarding configuration. Troubleshooting Cisco Nexus Switches and NX-OS is your single reference for quickly identifying and solving problems with these . -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. The forwarding application-specific integrated circuit (ASIC) time- . Cisco NX-OS 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 Cisco Nexus 9300 and 9500 platform switches support FEX ports as SPAN sources in the ingress direction for all traffic and The no form of this command detaches the UDFs from the TCAM region and returns the region to single wide. 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. configuration. VLAN and ACL filters are not supported for FEX ports. ethanalyzer local interface inband mirror detail Enabling Unidirectional Link Detection (UDLD) on the SPAN source and destination ports simultaneously is not supported. This is very useful for a number of reasons: If you want to use wireshark to capture traffic from an interface that is connected to a workstation, server, phone or anything else you want to sniff. Learn more about how Cisco is using Inclusive Language. SPAN destinations refer to the interfaces that monitor source ports. SPAN session. Note: . Cisco Nexus 9300-EX/FX/FX2/FX3/FXP platform switches support FEX ports as SPAN sources only in the ingress direction. This chapter describes how to configure an Ethernet switched port analyzer (SPAN) to analyze traffic between ports on Cisco FNF limitations. Configures a description for the session. description SPAN is not supported for management ports. the MTU. is applied. In addition, if for any reason one or more of slot/port. You can configure a destination port only one SPAN session at a time. To configure a unidirectional SPAN session-range} [brief ]. For port-channel sources, the Layer sources. Your UDF configuration is effective only after you enter copy running-config startup-config + reload. An egress SPAN copy of an access port on a switch interface always has a dot1q header. Select the Smartports option in the CNA menu. The SPAN TCAM size is 128 or 256, depending on the ASIC. 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. configured as a destination port cannot also be configured as a source port. the monitor configuration mode. CPU-generated frames for Layer 3 interfaces 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. Rx is from the perspective of the ASIC (traffic egresses from the supervisor over the inband and is received by the ASIC/SPAN). I am trying to configure sflow on Nexus 9396PX switch and having some difficulty to understand tcam region. 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, acl-filter, destination interface By default, SPAN sessions are created in the shut state. 2023 Cisco and/or its affiliates. (Optional) Repeat Step 9 to configure the shut state. and host interface port channels on the Cisco Nexus 2000 Series Fabric Extender Configuring LACP for a Cisco Nexus switch 8.3.8. source interface is not a host interface port channel. Enabling UniDirectional Link Detection (UDLD) on the SPAN source and destination ports simultaneously is not supported. active, the other cannot be enabled. license. . SPAN session on the local device only. Cisco's Nexus 5000 / 2000 design guide lays out a number of topology choices for your data center. SPAN sources include the following: The inband interface to the control plane CPU. session, follow these steps: Configure destination ports in captured traffic. VLAN SPAN monitors only the traffic that enters Layer 2 ports in the VLAN. Configures switchport parameters for the selected slot and port or range of ports. Configuring LACP on the physical NIC 8.3.7. 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. If the FEX NIF interfaces or Cisco Nexus 9300 Series switches do not support Tx SPAN on 40G uplink ports. The MTU ranges for SPAN packet truncation are: The MTU size range is 320 to 1518 bytes for Cisco Nexus 9300-EX platform switches. You can configure one or more VLANs, as The Cisco Nexus device supports Ethernet, Fibre Channel, virtual Fibre Channel, port channels, SAN port channels, VSANs and VLANs as SPAN sources. VLAN sources are spanned only in the Rx direction. This figure shows a SPAN configuration. MTU value specified. session number. Enters monitor configuration mode for the specified SPAN session. The SPAN feature supports stateless (Optional) direction only for known Layer 2 unicast traffic flows through the switch and FEX. all SPAN sources. Configures the Ethernet SPAN destination port. also apply to Cisco Nexus 9500 Series switches, depending on the SPAN source's forwarding engine instance mappings. (Optional) show You can analyze SPAN copies on the supervisor using the these ports receive might be replicated to the SPAN destination port even though the packets are not actually transmitted 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. 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. Port channel interfaces (EtherChannel) can be configured as source ports but not a destination port for SPAN. (Optional) Repeat Step 11 to configure You can resume (enable) SPAN sessions to resume the copying of packets From the switch CLI, enter configuration mode to set up a monitor session: . You can configure a SPAN session on the local device only. side prior to the ACL enforcement (ACL dropping traffic). FEX ports are not supported as SPAN destination 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. See the multiple UDFs. Requirement. Configuring MTU on a SPAN session truncates all packets egressing on the SPAN destination (for that session) to the MTU value CSCwd55175 Deleting a span port with QinQ vlan is breaking netflow. You can enter up to 16 alphanumeric characters for the name. which traffic can be monitored are called SPAN sources. After a reboot or supervisor switchover, the running It is not supported for SPAN destination sessions. Packets on three Ethernet ports all } Truncation is supported for Cisco Nexus 9500 platform switches with 9700-EX or 9700-FX line cards. state for the selected session. traffic. Any feature not included in a license package is bundled with the Only 1 or 2 bytes are supported. 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. of SPAN sessions. Cisco Nexus 9300-FX2 switches support sFlow and SPAN co-existence. SPAN analyzes all traffic between source ports by directing the SPAN session traffic to a destination port with an external the packets may still reach the SPAN destination port. 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. By default, sessions are created in the shut state. interface can be on any line card. interface. TCAM regions used by SPAN sessions, see the Configuring IP ACLs chapter of the Cisco Nexus 9000 Series NX-OS Security Configuration The no form of the command enables the SPAN session. sessions have bidirectional sources, the fourth session has hardware resources only for Rx sources. Cisco Nexus 3264Q. Using the ACL filter to span subinterface traffic on the parent interface is not supported on the Cisco Nexus 9200 platform Enters the monitor configuration mode. Security Configuration Guide. To capture these packets, you must use the physical interface as the source in the SPAN sessions. Shuts A SPAN session with a VLAN source is not localized. 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. 9508 switches with 9636C-R and 9636Q-R line cards. This guideline does not apply for If The number of SPAN sessions per line card reduces to two if the same interface is configured as a bidirectional source in Cisco Nexus 9300 and 9500 platform switches support FEX ports as SPAN sources in the ingress direction for all traffic and monitor session You can analyze SPAN copies on the supervisor using the This guideline does not apply for Cisco Nexus 9508 switches with 9636C-R and 9636Q-R line cards. Beginning with Cisco NX-OS Release 7.0(3)I7(1), you can configure the truncation of source packets for each SPAN session based You can configure only one destination port in a SPAN session. Cisco Nexus 9000 Series NX-OS Interfaces Configuration Guide. This guideline does not apply for Cisco Nexus Enters interface configuration mode on the selected slot and port. Nexus9K (config-monitor)# exit. session, show session-range} [brief], (Optional) copy running-config startup-config. For the Cisco Nexus 9732C-EX line card, one copy is made per unit that has members. Cisco Nexus 9508 switches with 9636C-R and 9636Q-R line cards. 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. source interface is not a host interface port channel. 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 type When traffic ingresses from an access port and egresses to an access port, an ingress/egress SPAN copy of an access port on You cannot configure a port as both a source and destination port. can bypass all forwarding lookups in the hardware, including SPAN and ERSPAN. on the size of the MTU. This guideline does not apply 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. SPAN and local SPAN. (FEX). CPU. these ports receive can be replicated to the SPAN destination port although the packets are not actually transmitted on the SPAN sources refer to the interfaces from which traffic can be monitored. For more You can change the rate limit shut state for the selected session. You can configure the shut and enabled SPAN session states with either a global or monitor configuration mode command. UDF-SPAN acl-filtering only supports source interface rx. down the specified SPAN sessions. 04-13-2020 04:24 PM. the specified SPAN session. The configuration above will capture all traffic of VLAN 5 and send it to SPAN port fastethernet 0/5. The optional keyword shut specifies a shut A SPAN session is localized when all By default, SPAN sessions are created in the shut state. interface. By default, sessions are created in the shut state. Layer 3 subinterfaces are not supported. Destination ports receive the copied traffic from SPAN VLAN can be part of only one session when it is used as a SPAN source or filter. Cisco Nexus 9000 Series NX-OS Security Configuration Guide. 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. A mirror or SPAN (switch port analyzer) port can be a very useful resource if used in the correct way. size. When you specify the supervisor inband interface as a SPAN source, the device monitors all packets that are sent by the Supervisor About access ports 8.3.4. monitor session To configure the device. You can configure one or more sources, as either a series of comma-separated entries or a range of numbers. 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. Due to the hardware limitation, only the Cisco Nexus 9000 Series NX-OS System Management Configuration Guide, Release 9.3(x), View with Adobe Reader on a variety of devices. Learn more about how Cisco is using Inclusive Language. VLAN Tx SPAN is supported on the Cisco Nexus 9200 platform switches. Beginning with Cisco NX-OS Release 7.0(3)I7(1), you can configure SPAN for multicast Tx traffic across different leaf spine and stateful restarts. Statistics are not support for the filter access group. match for the same list of UDFs. destination ports in access mode and enable SPAN monitoring. interface does not have a dot1q header. arrive on the supervisor hardware (ingress), All packets generated To match the first byte from the offset base (Layer 3/Layer 4 Configure a Statistics are not support for the filter access group. in the egress direction only for known Layer 2 unicast traffic flows through the switch and FEX. An access-group filter in a SPAN session must be configured as vlan-accessmap. 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 CPU-generated frames for Layer 3 interfaces Open a monitor session. those ports drops the packets on egress (for example, due to congestion), the packets may still reach the SPAN destination The 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 Therefore, the TTL, VLAN ID, any remarking due to egress policy,
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