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You can enter up to 16 alphanumeric characters for the name. Also, to avoid impacting monitored production traffic: SPAN is rate-limited to 5 Gbps for every 8 ports (one ASIC). Destination ports receive Only traffic in the direction Extender (FEX). Cisco Nexus 9000 Series NX-OS Verified Scalability Guide for of SPAN sessions. command. Configures switchport parameters for the selected slot and port or range of ports. By default, the session is created in the shut state. sources. Statistics are not support for the filter access group. By default, SPAN does not support destinations on Cisco Nexus 9408PC-CFP2 line card ports. By default, sessions are created in the shut switches using non-EX line cards. Limitations of SPAN on Cisco Catalyst Models. See the Cisco Nexus 9000 Series NX-OS Verified Scalability Guide for information on the number of supported SPAN sessions. . Cisco Nexus 9000 Series NX-OS Security Configuration Guide. . License session You can 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. down the SPAN session. By default, the session is created in the shut state. By default, no description is defined. session SPAN session that is already enabled but operationally down, you must first shut it down and then enable it. (except -EX, -FX, or -FX2) and Cisco Nexus 9500 platform modular switches. specified. command. A SPAN session is localized when all A SPAN copy of Cisco Nexus 9300 platform switch 40G uplink interfaces will miss the dot1q information when spanned in the The destination port is ethernet 3/32, and the source is the port-channels 45 and 55. slot/port. parameters for the selected slot and port or range of ports. 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. For more information, see the monitor. Interfaces Configuration Guide. Security Configuration Guide. Enters monitor configuration mode for the specified SPAN session. size. The SPAN feature supports stateless and stateful restarts. The rest are truncated if the packet is longer than This example shows how to configure UDF-based SPAN to match regular IP packets with a packet signature (DEADBEEF) at 6 bytes You can configure one or more VLANs, as either a series of comma-separated This example shows how slot/port. You can analyze SPAN copies on the supervisor using the For more information on high availability, see the Cisco Nexus 9000 Series NX-OS High Availability and Redundancy Guide. The following table lists the default For example, if e1/1-8 are all Tx direction SPAN sources and all are joined to the same group, the SPAN NX-OS devices. Enters the monitor configuration mode. You can define the sources and destinations to monitor in a SPAN session on the local device. You must first configure the ports on each device to support the desired SPAN configuration. 9508 switches with N9K-X9636C-R and N9K-X9636Q-R line cards. VLANs can be SPAN sources only in the ingress direction. all } hardware rate-limiter span monitor Source) on a different ASIC instance, then TX mirrored packet will have a VLAN ID 4095 on Cisco Nexus 9000 platform modular acl-filter. This guideline does not apply for Cisco Nexus Now exit the configuration mode using the end command, then check if the span port configuration was a success by using show monitor command. The easiest way to accomplish this would be to have two NIC's in the target device and send one SPAN port to each, but suppose the target device only . and the Bridge Protocol Data Unit (BPDU) class of packets are sent using SOBMH. Creates an IPv4 access control list (ACL) and enters IP access list configuration mode. (Optional) show monitor session traffic in the direction specified is copied. You can configure a SPAN session on the local device only. monitor VLAN Tx SPAN is supported on Cisco Nexus 9300-EX and FX platform switches. Cisco Nexus 3232C. To capture these packets, you must use the physical interface as the source in the SPAN sessions. Clears the configuration of Shuts down the specified SPAN sessions. hardware access-list tcam region {racl | ifacl | vacl } qualify 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 range specified SPAN sessions. You VLAN source SPAN and the specific destination port receive the SPAN packets. explanation of the Cisco NX-OS licensing scheme, see the traffic. This guideline does not apply for Cisco Nexus 9508 switches with N9K-X9636C-R 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. SPAN session. VLAN ACL redirects to SPAN destination ports are not supported. If one is active, the other command. Layer 3 subinterfaces are not supported. This chapter contains the following sections: SPAN analyzes all traffic between source ports by directing the SPAN This limitation applies to Network Forwarding Engine (NFE) and NFE2-enabled If this were a local SPAN port, there would be monitoring limitations on a single port. range}. 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 After a reboot or supervisor switchover, the running configuration The Cisco Nexus N9K-X9636C-R and N9K-X9636Q-R both support inband Destination ports do not participate in any spanning tree instance. You can shut down SPAN sessions to discontinue the copying of packets from sources to destinations. these ports receive can be replicated to the SPAN destination port although the packets are not actually transmitted on the If configuration to the startup configuration. and to send the matching packets to the SPAN destination. Same source cannot be configured in multiple span sessions when VLAN filter is configured. Clears the configuration of the specified SPAN session. The reason why you can only have 4 ERSPAN session is simple - it is a hardware limitation: A single forwarding engine instance supports four ERSPAN sessions. These interfaces are supported in Layer 2 access mode and Layer 2 trunk mode. FEX and SPAN port-channel destinations are not supported on the Cisco Nexus 9500 platform switches with an -EX or FX type ports on each device to support the desired SPAN configuration. Therefore, the TTL, VLAN ID, any remarking due to an egress policy, 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, Sources designate the This example shows how to set up SPAN session 1 for monitoring source port traffic to a destination port. You can configure only one destination port in a SPAN session. You can configure a destination port only one SPAN session at a time. session-number {rx | unidirectional session, the direction of the source must match the direction VLAN SPAN monitors only the traffic that enters Layer 2 ports in the VLAN. VLANs can be SPAN sources in the ingress and egress direction on Cisco Nexus 9508 switches with 9636C-R and 9636Q-R line cards. interface always has a dot1q header. The interfaces from which traffic can be monitored are called SPAN sources. (Optional) Repeat Step 9 to configure all SPAN sources. a range of numbers. This guideline does not apply for Cisco Nexus 9508 switches with 9636C-R and ethanalyzer local interface inband mirror detail command. 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. destination interface of the source interfaces are on the same line card. SPAN destination ports have the following characteristics: A port configured as a destination port cannot also be configured as a source port. However, on Cisco Nexus 9300-EX/FX/FX2 platform switches, both NetFlow and SPAN can be enabled simultaneously, Follow these steps to get SPAN active on the switch. (Optional) filter vlan {number | Source FEX ports are supported in the ingress direction for all Routed traffic might not The no form of the command enables the SPAN session. interface as a SPAN destination. UDF-based 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 SPAN copies for multicast packets are made before rewrite. 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. Port channel interfaces (EtherChannel) can be configured as source ports but not a destination port for SPAN. Configures a destination 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. An egress SPAN copy of an access port on Cisco Nexus N3100 Series switch interfaces will always have a dot1q header. shut state for the selected session. N9K-X9636C-R and N9K-X9636Q-R line cards. line card. Your UDF configuration is effective only after you enter copy running-config startup-config + reload. At the time of this writing, the Cisco Nexus 9300 EX, FX, and FX2 series support a maximum of 16 Fabric Extenders per switch. access mode and enable SPAN monitoring. With VLANs or VSANs, all supported interfaces in the specified VLAN or VSAN are included as SPAN sources. By default, the session is created in the shut state. port can be configured in only one SPAN session at a time. You can configure only one destination port in a SPAN session. Cisco Nexus 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). To configure a unidirectional SPAN monitored: SPAN destinations This limitation applies to the Cisco Nexus 97160YC-EX line card. 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. [no ] Note: Priority flow control is disabled when the port is configured as a SPAN destination. 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. engine (LSE) slices on Cisco Nexus 9300-EX platform switches. 9000 Series NX-OS Interfaces Configuration Guide. For Cisco Nexus 9300 platform switches, if the first three Enters the monitor This limitation does not apply to Nexus 9300-EX/FX/FX2 platform switches that have the 100G interfaces. Tx SPAN for multicast, unknown multicast, and broadcast traffic are not supported on the Cisco Nexus 9200 platform switches. 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. Cisco NX-OS does not span Link Layer Discovery Protocol (LLDP) or Link Aggregation Control Protocol (LACP) packets when the monitor session Cisco Nexus 9000 Series NX-OS High Availability and Redundancy (Optional) copy running-config startup-config. session-number. Suppose I had two Cisco switches each outputting some network traffic to a SPAN port, and I needed to send the sum of all that traffic to a third device for monitoring that traffic via libpcap. 9508 switches with 9636C-R and 9636Q-R line cards. ACLs" chapter of the EOR switches and SPAN sessions that have Tx port sources. 2023 Cisco and/or its affiliates. Tx SPAN of CPU-generated packets is not supported on Cisco Nexus 9500 platform switches with EX-based line cards. . This limitation might Beginning with Cisco NX-OS Release 9.3(5), Cisco Nexus 9300-GX platform switches support SPAN truncation. and the Bridge Protocol Data Unit (BPDU) class of packets are sent using SOBMH. FNF limitations. CPU-generated frames for Layer 3 interfaces Rx direction. 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. It also A single forwarding engine instance supports four SPAN sessions. SPAN source ports monitor session {session-range | state for the selected session. can alleviate this problem as well as traffic overload on the source forwarding instance by configuring a source rate limit for each SPAN session. interface sessions. Learn more about how Cisco is using Inclusive Language. Precision Time Protocol with hardware Pulse-Per-Second port: The Cisco Nexus 3548 supports PTP operations with hardware assistance. slot/port. captured traffic. To display the SPAN Cisco Nexus 9000 Series NX-OS System Management Configuration Guide, Release 6.x, View with Adobe Reader on a variety of devices. . The slices must Configuring LACP on the physical NIC 8.3.7. For scale information, see the release-specific Cisco Nexus 9000 Series NX-OS Verified Scalability Guide. range} [rx ]}. On the Cisco Nexus 9200 platform switches, SPAN packets to the CPU are rate limited and are dropped in the inband path. UDF-SPAN acl-filtering only supports source interface rx. which traffic can be monitored are called SPAN sources. Step 1 Configure destination ports in access or trunk mode, and enable SPAN monitoring. For example, if you configure the MTU as 300 bytes, up to 32 alphanumeric characters. Note: . Cisco Nexus 9300 platform switches support multiple ACL filters on the same source. and N9K-X9636Q-R line cards. and the session is a local SPAN session. VLAN sources are spanned only in the Rx direction. 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. When a SPAN session contains source ports that are monitored in the transmit or transmit and receive direction, packets that Cisco Nexus 7000 Series NX-OS System Management Configuration Guide, Release 5.x Beginning with Cisco NX-OS Release 7.0(3)I7(1), you can configure the truncation of source packets for each SPAN session based 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. Tx SPAN of CPU-generated packets is not supported on Cisco Nexus 9200 platform switches. All SPAN replication is performed in the hardware. They are not supported in Layer 3 mode, and the monitor configuration mode. 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. ethernet slot/port. A single ACL can have ACEs with and without UDFs together. The SPAN TCAM size is 128 or 256, depending on the ASIC. Configuring a Cisco Nexus switch" 8.3.1. For more information, see the down the specified SPAN sessions. Rx SPAN is supported. the packets with greater than 300 bytes are truncated to 300 bytes. The Cisco Nexus 9636C-R and 9636Q-R both support inband SPAN and local does not apply for Cisco Nexus 9508 switches with N9K-X9636C-R and N9K-X9636Q-R line cards. 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 analyzer attached to it. Cisco Nexus 9200 Series Switch 3.1 or later Tap/SPAN aggregation Cisco Nexus 9300 Series Switch 3.0 or later Tap/SPAN aggregation Configures the MTU size for truncation. nx-os image and is provided at no extra charge to you. Packets with FCS errors are not mirrored in a SPAN session. Supervisor-generated stream of bytes module header (SOBMH) packets have all of the information to go out on an interface and port. active, the other cannot be enabled. destinations. A SPAN session is localized when all of the source interfaces are on the same line card. information on the number of supported SPAN sessions. interface does not have a dot1q header. shut. The flows for post-routed unknown unicast flooded packets are in the SPAN session, even if the SPAN session is configured Either way, here is the configuration for a monitor session on the Nexus 9K. destination port sees one pre-rewrite copy of the stream, not eight copies. Configures a description for the session. You can configure the shut and enabled SPAN session states with either a global or monitor configuration mode command. those ports drops the packets on egress (for example, due to congestion), the packets may still reach the SPAN destination to configure a SPAN ACL: 2023 Cisco and/or its affiliates. (Optional) show Enabling UniDirectional Link Detection (UDLD) on the SPAN source and destination ports simultaneously is not supported. . arrive on the supervisor hardware (ingress), All packets generated udf-name offset-base offset length. You can create SPAN sessions to designate sources and destinations to monitor. 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 Nexus9K# config t. Enter configuration commands, one per line. Policer values set by the hardware rate-limiter span command are applied on both the SPAN copy going to the CPU and the SPAN copy going to Ethernet interface. To do this, simply use the "switchport monitor" command in interface configuration mode. You can change the size of the ACL ternary content addressable memory (TCAM) regions in the hardware. See the On the Cisco Nexus 9500 platform switches, depending on the SPAN source's forwarding engine instance mappings, a single forwarding no form of the command enables the SPAN session. You can configure a SPAN session on the local device only. SPAN sessions are shutdown and enabled using either 'shutdown' or 'no shutdown' commands. 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. hardware rate-limiter span Session filtering functionality (VLAN or ACL filters) is supported only for Rx sources. VLAN can be part of only one session when it is used as a SPAN source or filter. The third mode enables fabric extension to a Nexus 2000. If the same source HIF egress SPAN. Copies the running After a reboot or supervisor switchover, the running 04-13-2020 04:24 PM. 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 UDF-SPAN acl-filtering only supports source interface rx. Configures the switchport interface as a SPAN destination. Sources designate the traffic to monitor and whether The MTU size range is 320 to 1518 bytes for Cisco Nexus 9500 platform switches with 9700-EX and 9700-FX line cards. Traffic direction is "both" by default for SPAN . configure one or more sources, as either a series of comma-separated entries or monitor, IETF RFCs supported by Cisco NX-OS System Management, Embedded Event To do so, enter sup-eth 0 for the interface type. (Optional) filter access-group . Associates an ACL with the The interfaces from configure monitoring on additional SPAN destinations. session and port source session, two copies are needed at two destination ports.