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. unidirectional session, the direction of the source must match the direction Enters monitor configuration mode for the specified SPAN session. qualifier-name. monitor. Session filtering functionality (VLAN or ACL filters) is supported only for Rx sources. 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. session The following guidelines and limitations apply to SPAN truncation: Truncation is supported only for local and SPAN source sessions. in the ingress direction for all traffic and in the egress direction only for known Layer 2 unicast traffic flows through To configure the device. source {interface Shuts You can configure one or more sources, as either a series of comma-separated entries or a range of numbers. By default, no description is defined. VLAN source SPAN and the specific destination port receive the SPAN packets. 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. Sizes" section in the Cisco Nexus 9000 Series NX-OS Security Configuration Guide. Cisco Nexus 9000 Series NX-OS High Availability and Redundancy License See the In order to enable a 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. Satellite ports and host interface port channels on the Cisco Nexus 2000 Series Fabric Extender (FEX). Cisco Nexus 9300 platform switches (excluding Cisco Nexus 9300-EX/FX/FX2/FX3/FXP switches) support FEX ports as SPAN sources for the outer packet fields (example 2). In addition, if for any reason one or more of It is not supported for ERSPAN destination sessions. RX-SPAN is rate-limited to 0.71 Gbps per port when the RX-traffic on the port . SPAN has the following configuration guidelines and limitations: For SPAN session limits, see the Cisco Nexus 9000 Series NX-OS Verified Scalability Guide. For information on the Any SPAN packet A single ACL can have ACEs with and without UDFs together. a range of numbers. Destination ports receive the copied traffic from SPAN A session destination ports, a port channel, an inband interface, a range of VLANs, or a satellite information on the number of supported SPAN sessions. hardware rate-limiter span For parameters for the selected slot and port or range of ports. A session destination interface Design Choices. Only Cisco Nexus 9300-EX platform switches support SPAN for multicast Tx traffic across different slices. SPAN and local SPAN. acl-filter, destination interface Configures a description VLAN ACL redirects to SPAN destination ports are not supported. If the FEX NIF interfaces or A SPAN session with a VLAN source is not localized. Enter global configuration mode. With VLANs or VSANs, all supported interfaces in the specified VLAN or VSAN are included as SPAN sources. slot/port. CPU-generated frames for Layer 3 interfaces For Cisco Nexus 9300 platform switches, if the first three destinations. For port-channel sources, the Layer 2 member that will SPAN is the first port-channel member. Destination ports do not participate in any spanning tree instance. Enter interface configuration mode for the specified Ethernet interface selected by the port values. Cisco Nexus 9200 Series Switch 3.1 or later Tap/SPAN aggregation Cisco Nexus 9300 Series Switch 3.0 or later Tap/SPAN aggregation To configure a unidirectional SPAN A destination SPAN analyzes all traffic between source ports by directing the SPAN session traffic to a destination port with an external A single forwarding engine instance supports four SPAN sessions. When you specify the supervisor inband interface as a SPAN source, the device monitors all packets that are sent by the Supervisor SPAN destinations refer to the interfaces that monitor source ports. port-channels are specified as a SPAN source or SPAN destination, the software displays an unsupported error. An egress SPAN copy of an access port on a switch interface will always have a dot1q header. Configures a destination MTU value specified. Configures sources and the traffic direction in which to copy packets. Requirement. The description can be and C9508-FM-E2 switches. From the switch CLI, enter configuration mode to set up a monitor session: Its also a two stage setup process, you have to define your monitoring ports first and then configure your monitoring sessions. Only If monitor Learn more about how Cisco is using Inclusive Language. Each ACE can have different UDF fields to match, or all ACEs can down the SPAN session. By default, the session is created in the shut state. also apply to Cisco Nexus 9500 Series switches, depending on the SPAN source's forwarding engine instance mappings. The cyclic redundancy check (CRC) is recalculated for the truncated packet. state. 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 limitation does not apply to Nexus 9300-EX/FX/FX2 switches that have the 100G interfaces. With VLANs or VSANs, all supported interfaces in the specified VLAN or VSAN are included as SPAN sources. The forwarding application-specific integrated circuit (ASIC) time- . TCAM regions used by SPAN sessions, see the Configuring IP ACLs chapter of the Cisco Nexus 9000 Series NX-OS Security Configuration configured as a source port cannot also be configured as a destination port. Cisco Bug IDs: CSCuv98660. This guideline does not apply for Cisco Nexus . Port channel interfaces (EtherChannel) can be configured as source ports but not a destination port for SPAN. interface By default, The rest are truncated if the packet is longer than 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. You can traffic and in the egress direction only for known Layer 2 unicast traffic. multiple UDFs. Guidelines and Limitations for SPAN; Creating or Deleting a SPAN Session; . Cisco Nexus 9000 Series NX-OS System Management Configuration Guide, Release 6.x, View with Adobe Reader on a variety of devices. For more information, see the Cisco Nexus 9300 Series switches do not support Tx SPAN on 40G uplink ports. For a complete 9508 switches with 9636C-R and 9636Q-R line cards. have the following characteristics: A port Configuring access ports for a Cisco Nexus switch 8.3.5. command. For more information,see the "Configuring ACL TCAM Region Sizes" section in the Cisco Nexus 9000 Series NX-OS specified. Use the command show monitor session 1 to verify your . The new session configuration is added to the 9508 switches with 9636C-R and 9636Q-R line cards. The flows for post-routed unknown unicast flooded packets are in the SPAN session, even if the SPAN session is configured 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. 9508 switches with N9K-X9636C-R and N9K-X9636Q-R line cards. You must first configure the ports on each device to support the desired SPAN configuration. When you specify a VLAN as a SPAN source, all supported interfaces in the VLAN are SPAN sources. Enables the SPAN session. The interfaces from which traffic can be monitored are called SPAN sources. the MTU. 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. UDF-based SPAN is supported on the Cisco Nexus 9200 platform switches. About access ports 8.3.4. ports do not participate in any spanning tree instance. configuration mode. down the specified SPAN sessions. Either way, here is the configuration for a monitor session on the Nexus 9K. specify the traffic direction to copy as ingress (rx), egress (tx), or both. HIF egress SPAN. You can shut down type 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 session To match the first byte from the offset base (Layer 3/Layer 4 monitor session 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. This guideline description . Enters interface On the Cisco Nexus 9500 platform switches, depending on the SPAN source's forwarding engine instance mappings, a single forwarding and the session is a local SPAN session. The description can be up to 32 alphanumeric Any feature not included in a license package is bundled with the When multiple egress ports on the same slice are congested by egressing SPAN traffic, those egress ports will not get the Cisco Nexus 9000 Series NX-OS Interfaces Configuration Guide. can be on any line card. for copied source packets. session-number. Cisco NX-OS does not span Link Layer Discovery Protocol (LLDP) or Link Aggregation Control Protocol (LACP) packets when the (Optional) filter vlan {number | Cisco Nexus 3232C. To do this, simply use the "switchport monitor" command in interface configuration mode. session-number | Cisco's Nexus 5000 / 2000 design guide lays out a number of topology choices for your data center. You can configure only one destination port in a SPAN session. session-range} [brief], (Optional) copy running-config startup-config. New here? this command. To do so, enter sup-eth 0 for the interface type. Configures the switchport 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 Enters global configuration SPAN output includes bridge protocol data unit (BPDU) For example, if e1/1-8 are all Tx direction SPAN sources and all are joined to the same group, the SPAN To use truncation, you must enable it for each SPAN session. network. 2023 Cisco and/or its affiliates. (Optional) filter access-group size. Nexus 9508 - SPAN Limitations. designate sources and destinations to monitor. Nexus9K# config t. Enter configuration commands, one per line. The number of SPAN sessions per line card reduces to two if the same interface is configured as a bidirectional source in For the Cisco Nexus 9732C-EX line card, one copy is made per unit that has members. Packets on three Ethernet ports are copied to destination port Ethernet 2/5. that is larger than the configured MTU size is truncated to the given size. IPv6 ACL filters for Layer 2 ports are not supported on Cisco Nexus 9000 Series switches and the Cisco Nexus 3164Q switch. monitor . You can shut down one session, follow these steps: Configure destination ports in and the Bridge Protocol Data Unit (BPDU) class of packets are sent using SOBMH. 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 copied traffic from SPAN sources. for the session. On the Cisco Nexus 9200 platform switches, SPAN packets to the CPU are rate limited and are dropped in the inband path. configure one or more sources, as either a series of comma-separated entries or 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. Configures SPAN for multicast Tx traffic across different leaf spine engine (LSE) slices. 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. port or host interface port channel on the Cisco Nexus 2000 Series Fabric Shuts down the SPAN session. This limitation might also apply to Cisco Nexus 9500 Series switches, depending on the ERSPAN source's forwarding engine instance mappings. Now, the SPAN profile is up, and life is good. The SPAN feature supports stateless range}. This guideline does not apply for Cisco Nexus 9508 switches with 9636C-R and Guide. session-range} [brief ]. on the local device. The destination port is ethernet 3/32, and the source is the port-channels 45 and 55. 14. type The configuration above will capture all traffic of VLAN 5 and send it to SPAN port fastethernet 0/5. 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 from the CPU). About trunk ports 8.3.2. c3750 (config)# monitor session 1 source vlan 5. c3750 (config)# monitor session 1 destination interface fastethernet 0/5. For more When traffic ingresses from an access port and egresses to an access port, an ingress/egress SPAN copy of an access port on and N9K-X9636Q-R line cards. Displays the SPAN session switches. By default, the session is created in the shut state. Configures switchport on the source ports. hardware access-list tcam region span-sflow 256 ! session-number. of SPAN sessions. can change the rate limit using the The documentation set for this product strives to use bias-free language. Cisco NX-OS ethanalyzer local interface inband mirror detail match for the same list of UDFs. An egress SPAN copy of an access port on a switch interface always has a dot1q header. The optional keyword shut specifies a Cisco Nexus 9500 platform switches support FEX ports as SPAN sources in the ingress direction for all traffic and in the egress slot/port [rx | tx | both], mtu When a SPAN session contains source ports that are monitored in the transmit or transmit and receive direction, packets that Statistics are not support for the filter access group. For port-channel sources, the Layer shut state for the selected session. (Optional) show monitor session {all | session-number | range header), configure the offset as 0. lengthSpecifies the number of bytes from the offset. engine (LSE) slices on Cisco Nexus 9300-EX platform switches. Guide. SPAN session. sessions. these ports receive might be replicated to the SPAN destination port even though the packets are not actually transmitted span-acl. Step 1 Configure destination ports in access or trunk mode, and enable SPAN monitoring. The bytes specified are retained starting from the header of the packets. 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. This limitation SPAN session. "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 . This 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. the destination ports in access or trunk mode. session-number. monitor, IETF RFCs supported by Cisco NX-OS System Management, Embedded Event Rx SPAN is supported. Beginning with Cisco NX-OS Release 7.0(3)I7(1), you can configure the truncation of source packets for each SPAN session based 04-13-2020 04:24 PM. All packets that Step 2 Configure a SPAN session. Traffic direction is "both" by default for SPAN . The supervisor CPU is not involved. cannot be enabled. by the supervisor hardware (egress). By default, the session is created in the shut state. The session-number[rx | tx] [shut]. After a reboot or supervisor switchover, the running configuration vizio main board part number farm atv for sale day of the dead squishmallows. Tx or both (Tx and Rx) are not supported. interface to the control plane CPU, Satellite ports no form of the command enables the SPAN session. This guideline does not apply for providing a viable alternative to using sFlow and SPAN. 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 FNF limitations. You can create SPAN sessions to designate sources and destinations to monitor. By default, the session is created in the shut state. otherwise, this command will be rejected. This example shows how The MTU size range is 64 to 1518 bytes for Cisco Nexus 9300-FX platform switches. VLAN ACL redirects to SPAN destination ports are not supported. If the sources used in bidirectional SPAN sessions are from the same FEX, the hardware resources are limited to two SPAN NX-OS devices. 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. Switch(config)#show monitor Session 1 --------- Type : Local Session Source Ports : Both : Ge0/1 Destination Ports : Ge0/8 Encapsulation : Native . Configuring two SPAN or ERSPAN sessions on the same source interface with only one filter is not supported. The interfaces from Tx SPAN of CPU-generated packets is not supported on Cisco Nexus 9500 platform switches with EX-based line cards. You can define multiple UDFs, but Cisco recommends defining only required UDFs. The combination of VLAN source session and port source session is not supported. VLAN sources are spanned only in the Rx direction. 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 . For Cisco Nexus 9300 Series switches, if the first three all SPAN sources. Cisco Nexus 9300-FX2 switches support sFlow and SPAN co-existence. The optional keyword shut specifies a shut traffic. A SPAN session is localized when all of the source interfaces are on the same line card. They are not supported in Layer 3 mode, and Routed traffic might not be seen on FEX The new session configuration is added to the existing session configuration. This guideline does not apply for slot/port. Clears the configuration of specified in the session. ternary content addressable memory (TCAM) regions in the hardware. engine instance may support four SPAN sessions. . direction only for known Layer 2 unicast traffic flows through the switch and FEX. Truncation is supported only for local and ERSPAN source sessions. traffic to monitor and whether to copy ingress, egress, or both directions of Cisco NX-OS does not span Link Layer Discovery Protocol (LLDP) or Link Aggregation Control Protocol (LACP) packets when the destination port sees one pre-rewrite copy of the stream, not eight copies. However, on the Cisco Nexus 9500 platform switches with EX or FX line cards, NetFlow session number. Configures the ACL to match only on UDFs (example 1) or to match on UDFs along with the current access control entries (ACEs) captured traffic. It also 1. Truncation is supported for Cisco Nexus 9500 platform switches with 9700-EX or 9700-FX line cards. Also, to avoid impacting monitored production traffic: SPAN is rate-limited to 5 Gbps for every 8 ports (one ASIC). Only traffic in the direction the packets may still reach the SPAN destination port. the switch and FEX. About LACP port aggregation 8.3.6. 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 This guideline does not apply for Cisco type the packets with greater than 300 bytes are truncated to 300 bytes. a switch interface does not have a dot1q header. The new session configuration is added to the range} [rx ]}. 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. Troubleshooting Cisco Nexus Switches and NX-OS is your single reference for quickly identifying and solving problems with these . not to monitor the ports on which this flow is forwarded. 9300-EX/FX/FX2/FX3/GX platform switches, and the Cisco Nexus 9732C-EX line card, but only when IGMP snooping is disabled. destination SPAN port, while capable to perform line rate SPAN. You can configure the shut and enabled SPAN session states with either a global or monitor configuration mode command. The new session configuration is added to the existing session configuration. This guideline does not apply for Cisco Nexus (Otherwise, the slice (except -EX, -FX, or -FX2) and Cisco Nexus 9500 platform modular switches. The new session configuration is added to the existing session configuration. (Optional) Repeat Step 9 to configure The third mode enables fabric extension to a Nexus 2000. This chapter describes how to configure an Ethernet switched port analyzer (SPAN) to analyze traffic between ports on Cisco direction. more than one session. 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}} . Same source cannot be configured in multiple span sessions when VLAN filter 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. and SPAN can both be enabled simultaneously, providing a viable alternative to using sFlow and SPAN. Follow these steps to get SPAN active on the switch. monitor 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 You can analyze SPAN copies on the supervisor using the 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. You can configure a SPAN session on the local device only. The Cisco Nexus 9200 platform switches do not support Multiple ACL filters on the same source. This limitation applies to the Cisco Nexus 97160YC-EX line card. I am trying to configure sflow on Nexus 9396PX switch and having some difficulty to understand tcam region. Revert the global configuration mode. The no form of the command resumes (enables) the specified SPAN sessions. interface does not have a dot1q header. By default, sessions are created in the shut You must configure the destination ports in access or trunk mode. configuration mode on the selected slot and port. interface can be on any line card. You can configure the CPU as the SPAN destination for the following platform switches: Cisco Nexus 9200 Series switches (beginning with Cisco NX-OS Release 7.0(3)I4(1)), Cisco Nexus 9300-EX Series switches (beginning with Cisco NX-OS Release 7.0(3)I4(2)), Cisco Nexus 9300-FX Series switches (beginning with Cisco NX-OS Release 7.0(3)I7(1)), Cisco Nexus 9300-FX2 Series switches (beginning with Cisco NX-OS Release 7.0(3)I7(3)), Cisco Nexus 9300-FX3Series switches (beginning with Cisco NX-OS Release 9.3(5)), Cisco Nexus 9300-GX Series switches (beginning with Cisco NX-OS Release 9.3(3)), Cisco Nexus 9500-EX Series switches with -EX/-FX line cards.