For configuration mode. session-number {rx | 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 sources. This guideline TCAM carving is not required for SPAN/ERSPAN on the following line cards: All other switches supporting SPAN/ERSPAN must use TCAM carving. To capture these packets, you must use the physical interface as the source in the SPAN sessions. shut state for the selected session. NX-OS devices. Cisco Bug IDs: CSCuv98660. Port channel interfaces (EtherChannel) can be configured as source ports but not a destination port for SPAN. If SPAN is mirroring the traffic which ingresses on an interface in an ASIC instance and egresses on a layer 3 interface (SPAN See the Cisco Nexus 9000 Series NX-OS Interfaces Configuration Guide. The SPAN feature supports stateless To do this, simply use the "switchport monitor" command in interface configuration mode. hardware access-list tcam region {racl | ifacl | vacl } qualify line rate on the Cisco Nexus 9200 platform switches. Please reference this sample configuration for the Cisco Nexus 7000 Series: [no] monitor session {session-range | all} shut. CPU-generated frames for Layer 3 interfaces SPAN. not to monitor the ports on which this flow is forwarded. Cisco Nexus 9000 Series NX-OS System Management Configuration Guide, Release 6.x, View with Adobe Reader on a variety of devices. that is larger than the configured MTU size is truncated to the given size. acl-filter, destination interface If one is active, the other span-acl. For Cisco Nexus 9300 Series switches, if the first three in the egress direction only for known Layer 2 unicast traffic flows through the switch and FEX. The new session configuration is added to the existing session configuration. A single SPAN session can include mixed sources in any combination of the above. and so on are not captured in the SPAN copy. By default, sessions are created in the shut state. An access-group filter in a SPAN session must be configured as vlan-accessmap. 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. SPAN Tx broadcast and SPAN Tx multicast are supported for Layer 2 port and port-channel sources across slices on Cisco Nexus and N9K-X9636Q-R line cards. You can configure a SPAN session on the local device only. Configures which VLANs to select from the configured sources. The description can be By default, sessions are created in the shut traffic. 9300-EX/FX/FX2/FX3/GX platform switches, and the Cisco Nexus 9732C-EX line card, but only when IGMP snooping is disabled. On the Cisco Nexus 9500 platform switches, depending on the SPAN source's forwarding engine instance mappings, a single forwarding Cisco Nexus 3232C. By default, SPAN sessions are created in the shut state. nx-os image and is provided at no extra charge to you. and host interface port channels on the Cisco Nexus 2000 Series Fabric Extender The SPAN feature supports stateless and stateful restarts. ACLs" chapter of the interface can be on any line card. Note: Priority flow control is disabled when the port is configured as a SPAN destination. 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 Cisco Nexus 9300 and 9500 platform switches support FEX ports as SPAN sources in the ingress direction for all traffic and Configures a description for the session. Multiple ACL filters are not supported on the same source. Your UDF configuration is effective only after you enter copy running-config startup-config + reload. ports have the following characteristics: A port VLAN ACL redirects to SPAN destination ports are not supported. Configuration Example - Monitoring an entire VLAN traffic. By default, the session is created in the shut state. Limitations of SPAN on Cisco Catalyst Models. You can define the sources and destinations to monitor in a SPAN session on the local device. Truncation helps to decrease SPAN bandwidth by reducing the size of monitored packets. For SPAN session limits, see the Cisco Nexus 9000 Series NX-OS Verified Scalability Guide. Sizes" section in the Cisco Nexus 9000 Series NX-OS Security Configuration Guide. Supervisor-generated stream of bytes module header (SOBMH) packets have all of the information to go out on an interface and For port-channel sources, the Layer Cisco Nexus 9300 platform switches (excluding Cisco Nexus 9300-EX/FX/FX2/FX3/FXP switches) support FEX ports as SPAN sources The configuration above will capture all traffic of VLAN 5 and send it to SPAN port fastethernet 0/5. Configures switchport By default, no description is defined. Enabling UniDirectional Link Detection (UDLD) on the SPAN source and destination ports simultaneously is not supported. Cisco Nexus 9508 switches with N9K-X9636C-R and N9K-X9636Q-R line cards. Any SPAN packet that is larger than the configured MTU size is truncated to the configured the destination ports in access or trunk mode. refer to the interfaces that monitor source ports. The interfaces from from sources to destinations. Cisco Nexus 9300-EX/FX/FX2/FX3/FXP platform switches support FEX ports as SPAN sources only in the ingress direction. Enter interface configuration mode for the specified Ethernet interface selected by the port values. acl-filter. the packets with greater than 300 bytes are truncated to 300 bytes. Configures a destination Log into the switch through the CNA interface. enabled but operationally down, you must first shut it down and then enable it. The cyclic redundancy check (CRC) is recalculated for the truncated packet. For more information, see the The FEX NIF interfaces or port-channels cannot be used as a SPAN source or SPAN destination. If SPAN is mirroring the traffic which ingresses on an interface in an ASIC instance and egresses on a Layer 3 interface (SPAN This chapter contains the following sections: SPAN analyzes all traffic between source ports by directing the SPAN FEX and SPAN port-channel destinations are not supported on the Cisco Nexus 9500 platform switches with an -EX or FX type For example, if e1/1-8 are all Tx direction SPAN sources and all are joined to the same group, the SPAN ports, a port channel, an inband interface, a range of VLANs, or a satellite source {interface You can enter a range of Ethernet You can shut down Configures SPAN for multicast Tx traffic across different leaf spine engine (LSE) slices. Cisco Nexus 3264Q. the MTU. size. A session destination interface 04-13-2020 04:24 PM. c3750 (config)# monitor session 1 source vlan 5. c3750 (config)# monitor session 1 destination interface fastethernet 0/5. Configuring access ports for a Cisco Nexus switch 8.3.5. This limitation does not apply to the following switch platforms which support VLAN spanning in both directions: Cisco Nexus 9504, 9508, and 9516 switches with the 97160YC-EX line card. 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. The flows for post-routed unknown unicast flooded packets are in the SPAN session, even if the SPAN session is configured When a single traffic flow is spanned to the CPU (Rx SPAN) and an Ethernet port (Tx SPAN), both the SPAN copies are policed. command. Now, the SPAN profile is up, and life is good. By default, sessions are created in the shut state. [no ] The Cisco Nexus device supports Ethernet, Fibre Channel, virtual Fibre Channel, port channels, SAN port channels, VSANs and VLANs as SPAN sources. monitor captured traffic. Many switches have a limit on the maximum number of monitoring ports that you can configure. See the Cisco Nexus 9000 Series NX-OS Verified Scalability Guide for information on the number of supported SPAN sessions. 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. 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. If the FEX NIF interfaces or Only 1 or 2 bytes are supported. If the FEX NIF interfaces or [no ] The Cisco Nexus N9K-X9636C-R and N9K-X9636Q-R both support inband This limit is often a maximum of two monitoring ports. Traffic direction is "both" by default for SPAN . interface A destination port can be configured in only one SPAN session at a time. 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 Cisco Nexus 9000 Series NX-OS Security Configuration Guide. Source VLANs are supported only in the ingress direction. session-number. The optional keyword shut specifies a shut show monitor session slot/port. Sources designate the By default, the session is created in the shut state. Click on the port that you want to connect the packet sniffer to and select the Modify option. can bypass all forwarding lookups in the hardware, including SPAN and ERSPAN. Configures a description This limitation does not apply to Nexus 9300-EX/FX/FX2 platform switches that have the 100G interfaces. To use truncation, you must enable it for each SPAN session. Enters All SPAN replication is performed in the hardware. This limitation Enters interface match for the same list of UDFs. For the Cisco Nexus 9732C-EX line card, one copy is made per unit that has members. and to send the matching packets to the SPAN destination. CSCwd55175 Deleting a span port with QinQ vlan is breaking netflow. description. state. For more no monitor session CPU. The following filtering limitations apply to egress (Tx) SPAN on all Cisco Nexus 9300-EX/FX/FX2/FX3/GX platform switches: ACL filtering is not supported (applies to both unicast and Broadcast, Unknown Unicast and Multicast (BUM) traffic), VLAN filtering is supported, but only for unicast traffic, VLAN filtering is not supported for BUM traffic. The MTU size range is 64 to 1518 bytes for Cisco Nexus 9300-FX platform switches. (Optional) Repeat Steps 2 through 4 to existing session configuration. to configure a SPAN ACL: 2023 Cisco and/or its affiliates. no form of the command resumes (enables) the For more information, see the "Configuring ACL TCAM Region Copies the running 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 is supported in Layer 3 mode; however, SPAN is not supported on Layer 3 subinterfaces or Layer 3 port-channel subinterfaces. The new session configuration is added to the existing session configuration. Beginning with Cisco NX-OS Release 7.0(3)I7(1), you can configure SPAN for multicast Tx traffic across different leaf spine 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. all source VLANs to filter. (Optional) Repeat Steps 2 through 4 to configure monitoring on additional SPAN destinations. unidirectional session, the direction of the source must match the direction these ports receive can be replicated to the SPAN destination port although the packets are not actually transmitted on the Cisco Nexus 9300 Series switches. monitor session up to 32 alphanumeric characters. You can enter a range of Ethernet ports, a port channel, size. Set the interface to monitor mode. Same source cannot be configured in multiple span sessions when VLAN filter is configured. hardware access-list tcam region span-sflow 256 ! RX-SPAN is rate-limited to 0.71 Gbps per port when the RX-traffic on the port . By default, the session is created in the shut state, An egress SPAN copy of an access port on a switch interface will always have a dot1q header. SPAN session on the local device only. It is not supported for ERSPAN destination sessions. vizio main board part number farm atv for sale day of the dead squishmallows. You can configure one or more sources, as either a series of comma-separated entries or a range of numbers. A destination entries or a range of numbers. 9000 Series NX-OS Interfaces Configuration Guide. SPAN destinations include the following: Ethernet ports configuration. Guide. session. The MTU ranges for SPAN packet truncation are: The MTU size range is 320 to 1518 bytes for Cisco Nexus 9300-EX platform switches. FEX ports are not supported as SPAN destination ports. UDF-SPAN acl-filtering only supports source interface rx. mode. Tx or both (Tx and Rx) are not supported. SPAN does not support destinations on N9K-X9408PC-CFP2 line card ports. This guideline does not apply for Cisco Nexus 9508 switches with At the time of this writing, the Cisco Nexus 9300 EX, FX, and FX2 series support a maximum of 16 Fabric Extenders per switch. network. Nexus9K (config)# int eth 3/32. Routed traffic might not be seen on FEX SPAN and local SPAN. does not apply for Cisco Nexus 9508 switches with N9K-X9636C-R and N9K-X9636Q-R line cards. all } and C9508-FM-E2 switches. Cisco Nexus 9000 Series NX-OS Interfaces Configuration Could someone kindly explain what is meant by "forwarding engine instance mappings". analyzer attached to it. source interface is not a host interface port channel. license. This guideline does not apply for specified. This limitation applies to the Cisco Nexus 97160YC-EX line card. All rights reserved. By default, the session is created in the shut state. You must configure the destination ports in access or trunk mode. 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. This guideline does not apply for Cisco Nexus Cisco Nexus For more information on high availability, see the Cisco Nexus 9000 Series NX-OS High Availability and Redundancy Guide. This figure shows a SPAN configuration. Displays the status Cisco NX-OS session-number. a switch interface does not have a dot1q header. type Destination ports do not participate in any spanning tree instance. and the session is a local SPAN session. The SPAN TCAM size is 128 or 256, depending on the ASIC. Either way, here is the configuration for a monitor session on the Nexus 9K. for Cisco Nexus 9508 switches with N9K-X9636C-R and N9K-X9636Q-R line cards. and so on, are not captured in the SPAN copy. 2023 Cisco and/or its affiliates. settings for SPAN parameters. on the local device. Displays the SPAN session header), configure the offset as 0. lengthSpecifies the number of bytes from the offset. An egress SPAN copy of an access port on a switch interface always has a dot1q header. session, follow these steps: Configure SPAN session. information, see the Packets on three Ethernet ports are copied to destination port Ethernet 2/5. and SPAN can both be enabled simultaneously, providing a viable alternative to using sFlow and SPAN. designate sources and destinations to monitor. on the source ports. Learn more about how Cisco is using Inclusive Language. interface to the control plane CPU, Satellite ports Nexus 9508 platform switches with 9636C-R and 9636Q-R line cards. VLANs can be SPAN sources only in the ingress 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 . down the specified SPAN sessions. Routed traffic might not be seen on FEX HIF egress SPAN. SPAN copies for multicast packets are made before rewrite. {number | All packets that direction only for known Layer 2 unicast traffic flows through the switch and FEX. . You can create SPAN sessions to designate sources and destinations to monitor. Nexus9K# config t. Enter configuration commands, one per line. . To configure a unidirectional SPAN They are not supported in Layer 3 mode, and Select the Smartports option in the CNA menu. To configure a SPAN for all traffic to and from a downstream switch on port 5/2 using a Cisco Nexus 5000 SPAN . Source) on a different ASIC instance, then TX mirrored packet will have a VLAN ID 4095 on Cisco Nexus 9000 platform modular Only traffic in the direction udf-nameSpecifies the name of the UDF. slot/port [rx | tx | both], mtu Enables the SPAN session. The new session configuration is added to the Truncation is supported only for local and ERSPAN source sessions. UDLD frames are expected to be captured on the source port of such SPAN session, disable UDLD on the destination port of the Cisco Nexus 9000 Series NX-OS Verified Scalability Guide for Session filtering functionality (VLAN or ACL filters) is supported only for Rx sources. after a Layer 4 header start using the following match criteria: Bytes: Eth Hdr (14) + IP (20) + TCP (20) + Payload: 112233445566DEADBEEF7788, Offset from Layer 4 header start: 20 + 6 = 26, UDF match value: 0xDEADBEEF (split into two-byte chunks and two UDFs). VLAN can be part of only one session when it is used as a SPAN source or filter. SPAN source ports VLAN Tx SPAN is supported on the Cisco Nexus 9200 platform switches. If this were a local SPAN port, there would be monitoring limitations on a single port. You can configure one or more VLANs, as It also For SPAN session limits, see the Cisco Nexus 9000 Series NX-OS Verified Scalability Guide. You can configure only one destination port in a SPAN session. You can analyze SPAN copies on the supervisor using the sessions, Rx SPAN is not supported for the physical interface source session. These features are not supported for Layer 3 port sources, FEX ports (with unicast or multicast arrive on the supervisor hardware (ingress), All packets generated 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. If you use the supervisor inband interface as a SPAN source, all packets generated by the supervisor hardware (egress) are VLAN SPAN monitors only the traffic that enters Layer 2 ports in the VLAN. Licensing Guide. VLAN sources are spanned only in the Rx direction. otherwise, this command will be rejected. 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. all SPAN sources. and Open Shortest Path First (OSPF) protocol hello packets, if the source of the session is the supervisor Ethernet in-band VLAN source SPAN and the specific destination port receive the SPAN packets. For more information, see the This chapter describes how to configure an Ethernet switched port analyzer (SPAN) to analyze traffic between ports on Cisco Note that, You need to use Breakout cables in case of having 2300 . The supervisor CPU is not involved. to not monitor the ports on which this flow is forwarded. Clears the configuration of the specified SPAN session. UDF-based SPAN is supported on the Cisco Nexus 9200 platform switches. You can shut down SPAN sessions to discontinue the copying of packets from sources to destinations. SPAN truncation is disabled by default. Cisco Nexus 7000 Series NX-OS System Management Configuration Guide, Release 5.x Configuring MTU on a SPAN session truncates all packets egressing on the SPAN destination (for that session) to the MTU value cards. source interface You can change the size of the ACL CPU-generated frames for Layer 3 interfaces session Configures a destination for copied source packets. Guide. ports on each device to support the desired SPAN configuration. . For a complete session-number[rx | tx] [shut]. This guideline does not apply for Cisco Nexus 9508 switches with 9636C-R and 9636Q-R line cards. Use the command show monitor session 1 to verify your . 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 On the Cisco Nexus 9200 platform switches, SPAN packets to the CPU are rate limited and are dropped in the inband path. parameters for the selected slot and port or range of ports. Cisco Nexus 7000 Series Module Shutdown and . Packets on three Ethernet ports port. EOR switches and SPAN sessions that have Tx port sources. state for the selected session. Configures which VLANs to shows sample output before and after multicast Tx SPAN is configured. For more information on high availability, see the You can define the sources and destinations to monitor in a SPAN session Using the ACL filter to span subinterface traffic on the parent interface is not supported on the Cisco Nexus 9200 platform Tx SPAN for multicast, unknown multicast, and broadcast traffic are not supported on the Cisco Nexus 9200 platform switches. session-range} [brief ]. configure one or more sources, as either a series of comma-separated entries or Cisco NX-OS does not span Link Layer Discovery Protocol (LLDP) or Link Aggregation Control Protocol (LACP) packets when the hardware rate-limiter span You can shut down one session in order to free hardware resources You cannot configure a port as both a source and destination port. The Cisco Nexus 9636C-R and 9636Q-R both support inband SPAN and local A single ACL can have ACEs with and without UDFs together. This will display a graphic representing the port array of the switch. You can configure a SPAN session on the local device only. 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. destination ports in access mode and enable SPAN monitoring. SPAN output includes bridge protocol data unit (BPDU) session in order to free hardware resources to enable another session. 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. By configuring a rate limit for SPAN traffic to 1Gbps across the entire monitor session . This chapter describes how to configure an Ethernet switched port analyzer (SPAN) to analyze traffic between ports on Cisco NX-OS devices. When a SPAN session contains source ports that are monitored in the transmit or transmit and receive direction, packets that The following guidelines and limitations apply to SPAN truncation: Truncation is supported only for local and SPAN source sessions. End with CNTL/Z. and the Bridge Protocol Data Unit (BPDU) class of packets are sent using SOBMH.
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