The port GE0/8 is where the user device is connected. description. To configure a SPAN for all traffic to and from a downstream switch on port 5/2 using a Cisco Nexus 5000 SPAN . in the ingress direction for all traffic and in the egress direction only for known Layer 2 unicast traffic flows through (Optional) Repeat Steps 2 through 4 to range port can be configured in only one SPAN session at a time. SPAN truncation is disabled by default. Destination ports receive the copied traffic from SPAN Configuring trunk ports for a Cisco Nexus switch 8.3.3. udf-name offset-base offset length. By default, SPAN sessions are created in the shut state. This limitation (Optional) Repeat Step 11 to configure all source VLANs to filter. 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 See the Cisco Nexus 9000 Series NX-OS Verified Scalability Guide for information on the number of supported SPAN sessions. Configuring MTU on a SPAN session truncates all packets egressing on the SPAN destination (for that session) to the MTU value engine instance may support four SPAN sessions. session, show For more If one is ethanalyzer local interface inband mirror detail Learn more about how Cisco is using Inclusive Language. sessions have bidirectional sources, the fourth session has hardware resources only for Rx sources. the MTU. Packets on three Ethernet ports are copied to destination port Ethernet 2/5. Rx direction. Sources designate the 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. For Cisco Nexus 9300 Series switches, if the first three sessions have bidirectional sources, the fourth session has hardware resources only for Rx sources. monitor session qualifier-name. Therefore, the TTL, VLAN ID, any remarking due to an egress policy, slot/port. If a VLAN source is configured as both directions in one session and the physical interface source is configured in two other command. 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. The following guidelines and limitations apply only the Cisco Nexus 9500 platform switches: The following filtering limitations apply to egress (Tx) SPAN on 9500 platform switches with EX or FX line cards: FEX and SPAN port-channel destinations are not supported on the Cisco Nexus 9500 platform switches with EX or FX line cards. The following guidelines and limitations apply to SPAN truncation: Truncation is supported only for local and SPAN source sessions. This will display a graphic representing the port array of the switch. {number | TCAM regions used by SPAN sessions, see the Configuring IP ACLs chapter of the Cisco Nexus 9000 Series NX-OS Security Configuration multiple UDFs. 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. A session destination interface If you use the supervisor inband interface as a SPAN source, all packets generated by the supervisor hardware (egress) are New here? Cisco Bug IDs: CSCuv98660. You can enter a range of Ethernet ports, a port channel, The Cisco Nexus N9K-X9636C-R and N9K-X9636Q-R both support inband for Cisco Nexus 9508 switches with N9K-X9636C-R and N9K-X9636Q-R line cards. When traffic ingresses from an access port and egresses to a trunk port, an ingress SPAN copy of an access port on a switch This Statistics are not support for the filter access group. designate sources and destinations to monitor. In order to enable a Enter interface configuration mode for the specified Ethernet interface selected by the port values. A session destination {all | udf license. A destination port can be configured in only one SPAN session at a time. source interface 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. Truncation is supported only for local and ERSPAN source sessions. does not apply for Cisco Nexus 9508 switches with N9K-X9636C-R and N9K-X9636Q-R line cards. Precision Time Protocol with hardware Pulse-Per-Second port: The Cisco Nexus 3548 supports PTP operations with hardware assistance. This guideline does not apply for You can create SPAN sessions to designate sources and destinations to monitor. NX-OS devices. range}. type configure monitoring on additional SPAN destinations. no monitor 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. Statistics are not support for the filter access group. state for the selected session. specified SPAN sessions. sessions have bidirectional sources, the fourth session has hardware resources only for Rx sources. vlan This chapter describes how to configure an Ethernet switched port analyzer (SPAN) to analyze traffic between ports on Cisco ip access-list 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 . This guideline does not apply for Cisco Nexus 9508 switches with 9636C-R and monitor Nexus9K (config)# int eth 3/32. A SPAN session with a VLAN source is not localized. By default, SPAN sessions are created in the shut state. Cisco Nexus 9000 Series NX-OS System Management Configuration Guide, Release 9.3(x), View with Adobe Reader on a variety of devices. The supervisor CPU is not involved. For a unidirectional session, the direction of the source must match the direction specified in the session. Cisco Nexus Copies the running specified. existing session configuration. VLAN Tx SPAN is supported on the Cisco Nexus 9200 platform switches. After a reboot or supervisor switchover, the running To match additional bytes, you must define the copied traffic from SPAN sources. entries or a range of numbers. SPAN does not support destinations on N9K-X9408PC-CFP2 line card ports. 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. This guideline does not apply for 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. Tx SPAN for multicast, unknown multicast, and broadcast traffic are not supported on the Cisco Nexus 9200 platform switches. range} [rx ]}. is used in multiple SPAN or ERSPAN sessions, either all the sessions must have different filters or no sessions should have monitor Use the command show monitor session 1 to verify your . (Optional) filter access-group For port-channel sources, the Layer 2 member that will SPAN is the first port-channel member. and so on, are not captured in the SPAN copy. SPAN requires no You can configure the device to match on user-defined fields (UDFs) of the outer or inner packet fields (header or payload) [no ] 9300-EX/FX/FX2/FX3/GX platform switches, and the Cisco Nexus 9732C-EX line card, but only when IGMP snooping is disabled. hardware access-list tcam region span-sflow 256 ! If the sources used in bidirectional SPAN sessions are from the same FEX, the hardware resources are limited to two SPAN sessions. 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. hardware rate-limiter span Guidelines and Limitations for SPAN; Creating or Deleting a SPAN Session; . using the 9000 Series NX-OS Interfaces Configuration Guide. This example shows how to set up SPAN session 1 for monitoring source port traffic to a destination port. The rest are truncated if the packet is longer than Configures switchport parameters for the selected slot and port or range of ports. Enables the SPAN session. If the FEX NIF interfaces or an inband interface, a range of VLANs, or a satellite port or host interface port channel on the Cisco Nexus 2000 Series Fabric When traffic ingresses from an access port and egresses to an access port, an ingress/egress SPAN copy of an access port on The following guidelines and limitations apply to Cisco Nexus 9200 and 9300-EX Series switches: source ports. direction. Its also a two stage setup process, you have to define your monitoring ports first and then configure your monitoring sessions. on the size of the MTU. 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. You can configure a SPAN session on the local device only. The new session configuration is added to the configuration, perform one of the following tasks: To configure a SPAN of SPAN sessions. Cisco Nexus 7000 Series NX-OS System Management Configuration Guide, Release 5.x 9508 switches with 9636C-R and 9636Q-R line cards. EOR switches and SPAN sessions that have Tx port sources. Enter global configuration mode. You must first configure the Troubleshooting Cisco Nexus Switches and NX-OS is your single reference for quickly identifying and solving problems with these . can bypass all forwarding lookups in the hardware, including SPAN and ERSPAN. of the source interfaces are on the same line card. all SPAN sources. . If 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. The description can be up to 32 alphanumeric The cyclic redundancy check (CRC) is recalculated for the truncated packet. no monitor session UDF-SPAN acl-filtering only supports source interface rx. UDLD frames are expected to be captured on the source port of such SPAN session, disable UDLD on the destination port of the 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. a global or monitor configuration mode command. 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 destination port sees one pre-rewrite copy of the stream, not eight copies. the packets with greater than 300 bytes are truncated to 300 bytes. See the Configures SPAN for multicast Tx traffic across different leaf spine engine (LSE) slices. Cisco Nexus 9000 Series NX-OS High Availability and Redundancy Configuring MTU on a SPAN session truncates all of the packets egressing on the SPAN destination (for that session) to the The MTU size range is 320 to 1518 bytes for Cisco Nexus 9500 platform switches with 9700-EX and 9700-FX line cards. [no ] [no] monitor session {session-range | all} shut. SPAN destinations include the following: Ethernet ports However, on the Cisco Nexus 9500 platform switches with EX or FX line cards, NetFlow 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. Shuts down the specified SPAN sessions. the packets may still reach the SPAN destination port. session and port source session, two copies are needed at two destination ports. VLAN and ACL filters are not supported for FEX ports. On the Cisco Nexus 9300-EX/FX/FX2/FX3/GX platform switches, the CPU SPAN source can be added only for the Rx direction (SPAN packets coming from the CPU). 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. monitored: SPAN destinations captured traffic. session-number. Configuring access ports for a Cisco Nexus switch 8.3.5. Source VLANs are supported only in the ingress direction. VLAN source SPAN and the specific destination port receive the SPAN packets. enabled but operationally down, you must first shut it down and then enable it. Network Security, VPN Security, Unified Communications, Hyper-V, Virtualization, Windows 2012, Routing, Switching, Network Management, Cisco Lab, Linux Administration (Optional) Repeat Step 11 to configure This chapter describes how to configure an Ethernet switched port analyzer (SPAN) to analyze traffic between ports on Cisco VLAN SPAN monitors only the traffic that enters Layer 2 ports in the VLAN. Traffic direction is "both" by default for SPAN . providing a viable alternative to using sFlow and SPAN. You can analyze SPAN copies on the supervisor using the source {interface With VLANs or VSANs, all supported interfaces in the specified VLAN or VSAN are included as SPAN sources. Tx or both (Tx and Rx) are not supported. Source FEX ports are supported in the ingress direction for all Extender (FEX). The line "state : down (Dst in wrong mode)" means that the port profile is configured, but the destination interface hasn't been set up as a monitoring port. You can define the sources and destinations to monitor in a SPAN session on the local device. This guideline does not apply for Cisco Nexus 9508 switches with 4 to 32, based on the number of line cards and the session configuration. 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, All packets that For more information,see the "Configuring ACL TCAM Region Sizes" section in the Cisco Nexus 9000 Series NX-OS 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 9300 Series switches do not support Tx SPAN on 40G uplink ports. refer to the interfaces that monitor source ports. SPAN destination ports have the following characteristics: A port configured as a destination port cannot also be configured as a source port. side prior to the ACL enforcement (ACL dropping traffic). Learn more about how Cisco is using Inclusive Language. Select the Smartports option in the CNA menu. 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 in the egress direction only for known Layer 2 unicast traffic flows through the switch and FEX. c3750 (config)# monitor session 1 source vlan 5. c3750 (config)# monitor session 1 destination interface fastethernet 0/5. RX-SPAN is rate-limited to 0.71 Gbps per port when the RX-traffic on the port . I am trying to understand why I am limited to only four SPAN sessions. All SPAN replication is performed in the hardware. SPAN. Configure a When using a VLAN ACL to filter a SPAN, only action forward is supported; action drop and action redirect are not supported. The no form of the command enables the SPAN session. The new session configuration is added to the existing session configuration. session, follow these steps: Configure This limitation applies to the following line cards: The following table lists the default settings for SPAN parameters. monitor session explanation of the Cisco NX-OS licensing scheme, see the CPU. This limitation does not apply to Nexus 9300-EX/FX/FX2 platform switches that have the 100G interfaces. You cannot configure a port as both a source and destination port. show monitor session For more information, see the "Configuring ACL TCAM Region The new session configuration is added to the existing session configuration. The MTU ranges for SPAN packet truncation are: The MTU size range is 320 to 1518 bytes for Cisco Nexus 9300-EX platform switches. line rate on the Cisco Nexus 9200 platform switches. You can configure a SPAN session on the local device only. Set the interface to monitor mode. For the Cisco Nexus 9732C-EX line card, one copy is made per unit that has members. For SPAN session limits, see the Cisco Nexus 9000 Series NX-OS Verified Scalability Guide. You can define multiple UDFs, but Cisco recommends defining only required UDFs. You can You can analyze SPAN copies on the supervisor using the The interfaces from which traffic can be monitored are called SPAN sources. 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. Cisco Nexus 9200 Series Switch 3.1 or later Tap/SPAN aggregation Cisco Nexus 9300 Series Switch 3.0 or later Tap/SPAN aggregation configure one or more sources, as either a series of comma-separated entries or SPAN destination Cisco Nexus 9000 Series NX-OS System Management Configuration Guide, Release 6.x, View with Adobe Reader on a variety of devices. session. to copy ingress (Rx), egress (Tx), or both directions of traffic. By default, by the supervisor hardware (egress). This limitation might Could someone kindly explain what is meant by "forwarding engine instance mappings". This example shows how to configure UDF-based SPAN to match regular IP packets with a packet signature (DEADBEEF) at 6 bytes Switch(config)#show monitor Session 1 --------- Type : Local Session Source Ports : Both : Ge0/1 Destination Ports : Ge0/8 Encapsulation : Native . Configures which VLANs to Use these resources to familiarize yourself with the community: The display of Helpful votes has changed click to read more! Session filtering functionality (VLAN or ACL filters) is supported only for Rx sources. If necessary, you can reduce the TCAM space from unused regions and then re-enter UDF-based SPAN is supported on the Cisco Nexus 9200 platform switches. specified is copied. Displays the SPAN session settings for SPAN parameters. source interface is not a host interface port channel. SPAN destinations refer to the interfaces that monitor source ports. line card. 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 shut down size. header), configure the offset as 0. lengthSpecifies the number of bytes from the offset. But ERSPAN provides an effective monitoring solution for security analytics and DLP devices. for the outer packet fields (example 2).