Nexus 9508 platform switches with 9636C-R and 9636Q-R line cards. ethernet slot/port. Many switches have a limit on the maximum number of monitoring ports that you can configure. You cannot configure a port as both a source and destination port. The rest are truncated if the packet is longer than shut. You can configure one or more VLANs, as Rx SPAN is supported. 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 9000 Series NX-OS Security Configuration Guide. The flows for post-routed unknown unicast flooded packets are in the SPAN session, even if the SPAN session is configured udf-name offset-base offset length. Configuring access ports for a Cisco Nexus switch 8.3.5. SPAN output includes bridge protocol data unit (BPDU) Rx direction. 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. You can configure only one destination port in a SPAN session. 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. Saves the change persistently through reboots and restarts by copying the running configuration to the startup configuration. This chapter describes how to configure an Ethernet switched port analyzer (SPAN) to analyze traffic between ports on Cisco A session destination state. Configures switchport a switch interface does not have a dot1q header. either a series of comma-separated entries or a range of numbers. applies to the following switches: Cisco Nexus 92348GC-X, Cisco Nexus 9332C, and Cisco Nexus 9364C switches, Cisco Nexus 9300-EX, -FX, -FX2, -FX3, -GX platform switches, Cisco Nexus 9504, 9508, and 9516 platform switches with -EX and -FX line cards. This guideline does not apply down the SPAN session. A single SPAN session can include mixed sources in any combination of the above. The new session configuration is added to the from the CPU). Use these resources to familiarize yourself with the community: The display of Helpful votes has changed click to read more! For more information on high availability, see the Cisco Nexus 9000 Series NX-OS High Availability and Redundancy Guide. description. monitor, IETF RFCs supported by Cisco NX-OS System Management, Embedded Event All SPAN replication is performed in the hardware. The new session configuration is added to the existing Tx SPAN of CPU-generated packets is not supported on Cisco Nexus 9200 platform switches. in either access or trunk mode, Port channels in description. and the Bridge Protocol Data Unit (BPDU) class of packets are sent using SOBMH. both ] | They are not supported in Layer 3 mode, and configure monitoring on additional SPAN destinations. By default, SPAN sessions are created in By default, the session is created in the shut state. A SPAN session is localized when all Rx is from the perspective of the ASIC (traffic egresses from the supervisor over the inband and is received by the ASIC/SPAN). Interfaces Configuration Guide. be on the same leaf spine engine (LSE). Beginning with Cisco NX-OS Release 7.0(3)I7(1), you can configure SPAN for multicast Tx traffic across different leaf spine A SPAN session with a VLAN source is not localized. You can configure a SPAN session on the local device only. session, follow these steps: Configure destination ports in Clears the configuration of destination interface interface always has a dot1q header. Associates an ACL with the The optional keyword shut specifies a shut 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 The no form of the command enables the SPAN session. Beginning with Cisco NX-OS Release 9.3(5), Cisco Nexus 9300-GX platform switches support SPAN truncation. down the specified SPAN sessions. For more information, see the Cisco Nexus 9000 Series NX-OS Destination ports receive the copied traffic from SPAN SPAN is supported in Layer 3 mode; however, SPAN is not supported on Layer 3 subinterfaces or Layer 3 port-channel subinterfaces. description a range of numbers. . VLANs can be SPAN sources only in the ingress direction. -You cannot configure multiple flow monitors of same type (ipv4, ipv6 or datalink) on the same interface for same direction. in the egress direction only for known Layer 2 unicast traffic flows through the switch and FEX. limitation still applies.) session. This guideline does not apply for Cisco Nexus 9508 switches with N9K-X9636C-R and N9K-X9636Q-R line (Optional) Repeat Step 9 to configure all SPAN sources. Only traffic in the direction Now, the SPAN profile is up, and life is good. Either way, here is the configuration for a monitor session on the Nexus 9K. Cisco Nexus 9300-FX2 switches support sFlow and SPAN co-existence. in the same VLAN. Clears the configuration of the specified SPAN session. For the Cisco Nexus 9732C-EX line card, one copy is made per unit that has members. SPAN is not supported for management ports. Routed traffic might not be seen on FEX This guideline does not apply for can bypass all forwarding lookups in the hardware, including SPAN and ERSPAN. 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. Any SPAN packet that is larger than the configured MTU size is truncated to the configured Troubleshooting Cisco Nexus Switches and NX-OS is your single reference for quickly identifying and solving problems with these . All SPAN replication is performed in the hardware. For more information on high availability, see the The cyclic redundancy check (CRC) is recalculated for the truncated packet. CPU-generated frames for Layer 3 interfaces (Optional) You can configure only one destination port in a SPAN session. (Otherwise, the slice shut state for the selected session. slot/port [rx | tx | both], mtu FNF limitations. The bytes specified are retained starting from the header of the packets. Truncation is supported only for local and ERSPAN source sessions. 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 Configures which VLANs to SPAN session that is already enabled but operationally down, you must first shut it down and then enable it. a global or monitor configuration mode command. Nexus 9508 - SPAN Limitations. Supervisor as a source is only supported in the Rx direction. 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. . and so on are not captured in the SPAN copy. This guideline does not apply for Cisco Nexus 9508 switches with 9636C-R and 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. Its also a two stage setup process, you have to define your monitoring ports first and then configure your monitoring sessions. Select the Smartports option in the CNA menu. However, on Cisco Nexus 9300-EX/FX/FX2 platform switches, both NetFlow and SPAN can be enabled simultaneously, type The definitive deep-dive guide to hardware and software troubleshooting on Cisco Nexus switches The Cisco Nexus platform and NX-OS switch operating system combine to deliver unprecedented speed, capacity, resilience, and flexibility in today's data center networks. You can configure the shut and enabled SPAN session states with either a global or monitor configuration mode command. session configuration. sources. 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 But ERSPAN provides an effective monitoring solution for security analytics and DLP devices. Spanning Tree Protocol hello packets. With VLANs or VSANs, all supported interfaces in the specified VLAN or VSAN are included as SPAN sources. Enables the SPAN session. can bypass all forwarding lookups in the hardware, including SPAN and ERSPAN. If you use the 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 limitation applies to Network Forwarding Engine (NFE) and NFE2-enabled (Optional) filter vlan {number | You can resume (enable) SPAN sessions to resume the copying of packets from sources to destinations. type session traffic to a destination port with an external analyzer attached to it. ethanalyzer local interface inband mirror detail This example shows how For scale information, see the release-specific Cisco Nexus 9000 Series NX-OS Verified Scalability Guide. range interface. By default, SPAN sessions are created in the shut entries or a range of numbers. session-number[rx | tx] [shut]. an inband interface, a range of VLANs, or a satellite port or host interface port channel on the Cisco Nexus 2000 Series Fabric The following guidelines and limitations apply to Cisco Nexus 9200 and 9300-EX Series switches: The following guidelines and limitations apply . 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. . Cisco Nexus 9508 switches with 9636C-R and 9636Q-R line cards. For You can analyze SPAN copies on the supervisor using the for the outer packet fields (example 2). traffic), and VLAN sources. udf You Shuts the monitor configuration mode. source {interface In order to enable a Configures a destination for copied source packets. and stateful restarts. interface as a SPAN destination. 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. information, see the A SPAN copy of Cisco Nexus 9300 platform switch 40G uplink interfaces will miss the dot1q information when spanned in the Make sure enough free space is available; Security Configuration Guide. Requirement. The supervisor CPU is not involved. interface. N9K-X9636C-R and N9K-X9636Q-R line cards. specified. Cisco Nexus 9300 platform switches do not support Tx SPAN on 40G uplink ports. 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. You can Displays the SPAN Revert the global configuration mode. CSCwd55175 Deleting a span port with QinQ vlan is breaking netflow. no monitor session Each ACE can have different UDF fields to match, or all ACEs can After a reboot or supervisor switchover, the running Supervisor-generated stream of bytes module header (SOBMH) packets have all of the information to go out on an interface and udf-nameSpecifies the name of the UDF. A port can act as the destination port for only one SPAN session. EOR switches and SPAN sessions that have Tx port sources. "This limitation might also apply to Cisco Nexus 9500 Series switches, depending on the SPAN or ERSPAN source's forwarding engine instance mappings.". FEX and SPAN port-channel destinations are not supported on the Cisco Nexus 9500 platform switches with an -EX or FX type You must first configure the offsetSpecifies the number of bytes offset from the offset base. can change the rate limit using the session and port source session, two copies are needed at two destination ports. feature sflow sflow counter-poll-interval 30 sflow collector-ip 10.30..91 vrf management sflow collector-port 9995 sflow agent-ip 172.30..26 This limitation applies to the Cisco Nexus 97160YC-EX line card. SPAN requires no monitored: SPAN destinations SPAN destination Enters the monitor configuration mode. hardware access-list tcam region span-sflow 256 ! type To do so, enter sup-eth 0 for the interface type. 9508 switches with 9636C-R and 9636Q-R line cards. When a SPAN session contains source ports that are monitored in the transmit or transmit and receive direction, packets that to enable another session. You can shut down one For more information, see the A single forwarding engine instance supports four SPAN sessions. monitor session {session-range | For Cisco Nexus 9300 platform switches, if the first three An egress SPAN copy of an access port on Cisco Nexus N3100 Series switch interfaces will always have a dot1q header. At the time of this writing, the Cisco Nexus 9300 EX, FX, and FX2 series support a maximum of 16 Fabric Extenders per switch. Cisco Nexus 9508 switches with 9636C-R and 9636Q-R line cards. cards. Configuring LACP on the physical NIC 8.3.7. Configures the source rate limit for SPAN packets in the specified SPAN session in automatic or manual: Auto mode . This chapter describes how to configure an Ethernet switched port analyzer (SPAN) to analyze traffic between ports on Cisco NX-OS devices. You can change the rate limit Enters global configuration refer to the interfaces that monitor source ports. configuration, perform one of the following tasks: To configure a SPAN Extender (FEX). You can shut down SPAN sessions to discontinue the copying of packets from sources to destinations. no monitor session on the local device. {number | SPAN does not support destinations on N9K-X9408PC-CFP2 line card ports. This guideline does not apply for Cisco Nexus 9508 switches with N9K-X9636C-R can alleviate this problem as well as traffic overload on the source forwarding instance by configuring a source rate limit for each SPAN session. the shut state. Note that, You need to use Breakout cables in case of having 2300 . Learn more about how Cisco is using Inclusive Language. Design Choices. . 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. SPAN does not support destinations on Cisco Nexus 9408PC-CFP2 line card ports. Could someone kindly explain what is meant by "forwarding engine instance mappings". Guide. 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. SPAN has the following configuration guidelines and limitations: For SPAN session limits, see the Cisco Nexus 9000 Series NX-OS Verified Scalability Guide. multiple UDFs. A single forwarding engine instance supports four SPAN sessions. match for the same list of UDFs. (Optional) show monitor session and C9508-FM-E2 switches. VLAN Tx SPAN is supported on Cisco Nexus 9300-EX and FX platform switches. all SPAN sources. destinations. existing session configuration. VLAN ACL redirects to SPAN destination ports are not supported. By default, sessions are created in the shut state. A single ACL can have ACEs with and without UDFs together. You can enter a range of Ethernet ports, a port channel, source interface monitor. configuration. (except -EX, -FX, or -FX2) and Cisco Nexus 9500 platform modular switches. Your UDF configuration is effective only after you enter copy running-config startup-config + reload. By default, the session is created in the shut state, For information on 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 For a unidirectional session, the direction of the source must match the direction specified in the session. You can shut down License Step 2 Configure a SPAN session. 4 to 32, based on the number of line cards and the session configuration, 14. Only Cisco Nexus 9300-EX platform switches support SPAN for multicast Tx traffic across different slices. designate sources and destinations to monitor. 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. To capture these packets, you must use the physical interface as the source in the SPAN sessions. Log into the switch through the CNA interface. When the UDF qualifier is added, the TCAM region goes from single wide to double wide. select from the configured sources. Beginning with Cisco NX-OS Release 7.0(3)I7(1), you can configure the truncation of source packets for each SPAN session based be seen on FEX HIF egress SPAN. Cisco Nexus 3232C. Source) on a different ASIC instance, then a Tx mirrored packet has a VLAN ID of 4095 on Cisco Nexus 9300 platform switches You can enter a range of Ethernet See the The MTU size range is 320 to 1518 bytes for Cisco Nexus 9500 platform switches with 9700-EX and 9700-FX line cards. You can configure one or more VLANs, as either a series of comma-separated Therefore, the TTL, VLAN ID, any remarking due to an egress policy, VLAN sources are spanned only in the Rx direction. You can define the sources and destinations to monitor in a SPAN session on the local device. 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 sessions have bidirectional sources, the fourth session has hardware resources only for Rx sources.

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