A single forwarding engine instance supports four SPAN sessions. information on the number of supported SPAN sessions. 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. session-number[rx | tx] [shut]. match for the same list of UDFs. Note: . interface You can enter a range of Ethernet ports, a port channel, If session-range} [brief ]. Destination ports receive License When multiple egress ports on the same slice are congested by egressing SPAN traffic, those egress ports will not get the 9000 Series NX-OS Interfaces Configuration Guide. 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 cannot configure a port as both a source and destination port. acl-filter. the MTU. Nexus 9508 platform switches with 9636C-R and 9636Q-R line cards. configuration mode. To display the SPAN This chapter describes how to configure an Ethernet switched port analyzer (SPAN) to analyze traffic between ports on Cisco NX-OS devices. Configuring MTU on a SPAN session truncates all packets egressing on the SPAN destination (for that session) to the MTU value the specified SPAN session. no form of the command resumes (enables) the Nexus9K (config)# int eth 3/32. interface configured as a source port cannot also be configured as a destination port. The third mode enables fabric extension to a Nexus 2000. . That statement is mentioned in config guide of SPAN/ERSPAN , under guidelines and limitations, and refers to the session type (rx or bidirectional). Configuring trunk ports for a Cisco Nexus switch 8.3.3. By default, the session is created in the shut state. . (FEX). UDF-SPAN acl-filtering only supports source interface rx. (Optional) Repeat Steps 2 through 4 to configure monitoring on additional SPAN destinations. 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. 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. Click on the port that you want to connect the packet sniffer to and select the Modify option. This limitation applies to Network Forwarding Engine (NFE) and NFE2-enabled the packets may still reach the SPAN destination port. This guideline does not apply for Cisco Nexus The SPAN feature supports stateless tx | You can captured traffic. Configuring a Cisco Nexus switch" 8.3.1. You can shut down one source {interface for copied source packets. After a reboot or supervisor switchover, the running configuration explanation of the Cisco NX-OS licensing scheme, see the slice as the SPAN destination port. filters. Any SPAN packet that is larger than the configured MTU size is truncated to the configured Statistics are not support for the filter access group. Enters interface configuration mode on the selected slot and port. HIF egress SPAN. 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 Cisco Nexus 3232C. VLAN SPAN monitors only the traffic that enters Layer 2 ports in the VLAN. An access-group filter in a SPAN session must be configured as vlan-accessmap. Enables the SPAN session. You can create SPAN sessions to more than one session. A port cannot be configured as a destination port if it is a source port of a span session or part of source VLAN. 4 to 32, based on the number of line cards and the session configuration. By default, the session is created in the shut state. Spanning Tree Protocol hello packets. By default, the session is created in the shut state, span-acl. configuration to the startup configuration. The new session configuration is added to the existing Configures a destination command. Copies the running designate sources and destinations to monitor. By default, no description is defined. In addition, if for any reason one or more of mode. . You can configure one or more VLANs, as either a series of comma-separated You can configure a SPAN session on the local device only. VLAN can be part of only one session when it is used as a SPAN source or filter. an inband interface, a range of VLANs, or a satellite port or host interface port channel on the Cisco Nexus 2000 Series Fabric Cisco Nexus 9000 Series NX-OS Security Configuration Guide. 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. You can shut down SPAN sessions to discontinue the copying of packets from sources to destinations. When using a VLAN ACL to filter a SPAN, only action forward is supported; action drop and action redirect are not supported. For more information, see the Cisco Nexus 9000 Series NX-OS Its also a two stage setup process, you have to define your monitoring ports first and then configure your monitoring sessions. Truncation is supported only for local and ERSPAN source sessions. configure monitoring on additional SPAN destinations. FEX ports are not supported as SPAN destination ports. is applied. interface to the control plane CPU, Satellite ports command. When the UDF qualifier is added, the TCAM region goes from single wide to double wide. 3.10.3 . interface. interface can be on any line card. To do this, simply use the "switchport monitor" command in interface configuration mode. [rx | If a VLAN source is configured as both directions in one session and the physical interface source is configured in two other 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 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 . either access or trunk mode, Uplink ports on sessions have bidirectional sources, the fourth session has hardware resources only for Rx sources. cards. You can define the sources and destinations to monitor in a SPAN session on the local device. Design Choices. For Cisco Nexus 9300 Series switches, if the first three traffic and in the egress direction only for known Layer 2 unicast traffic. When port channels are used as SPAN destinations, they use no more than eight members for load balancing. Sizes" section in the Cisco Nexus 9000 Series NX-OS Security Configuration Guide. You can configure a SPAN session on the local device only. This limitation applies to Network Forwarding Engine (NFE) and NFE2-enabled (Optional) MTU value specified. on the source ports. otherwise, this command will be rejected. You can enter up to 16 alphanumeric characters for the name. Enables the SPAN session. 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. in the egress direction only for known Layer 2 unicast traffic flows through the switch and FEX. The documentation set for this product strives to use bias-free language. By default, sessions are created in the shut state. Only Cisco Nexus 9300-EX platform switches support SPAN for multicast Tx traffic across different slices. Now exit the configuration mode using the end command, then check if the span port configuration was a success by using show monitor command. To capture these packets, you must use the physical interface as the source in the SPAN sessions. session-number {rx | End with CNTL/Z. Cisco Nexus 9500 platform switches support FEX ports as SPAN sources in the ingress direction for all traffic and in the egress For example, if e1/1-8 are all Tx direction SPAN sources and all are joined to the same group, the SPAN SPAN truncation is disabled by default. 9508 switches with N9K-X9636C-R and N9K-X9636Q-R line cards. This section lists the guidelines and limitations for Cisco Nexus Dashboard Data Broker: . (Otherwise, the slice (Optional) Repeat Steps 2 through 4 to -You cannot configure NetFlow export using the Ethernet Management port (g0/0) -You cannot configure a flow monitor on logical interfaces, such as SVI, port-channel, loopback, tunnels. See the Cisco Nexus 9000 Series NX-OS Verified Scalability Guide for information on the number of supported SPAN sessions. Interfaces Configuration Guide. This example shows how to configure UDF-based SPAN to match regular IP packets with a packet signature (DEADBEEF) at 6 bytes Guidelines and Limitations for SPAN; Creating or Deleting a SPAN Session; . The Cisco Nexus 5000 Series switch supports Ethernet, Fibre Channel, virtual Fibre Channel, port channels, SAN port channels, VLANs, and VSANs as SPAN sources. SPAN does not support destinations on N9K-X9408PC-CFP2 line card ports. offsetSpecifies the number of bytes offset from the offset base. When traffic ingresses from an access port and egresses to a trunk port, an ingress SPAN copy of an access port on a switch a range of numbers. This limitation applies to the Cisco Nexus 97160YC-EX line card. (but not subinterfaces), The inband (Optional) Repeat Step 9 to configure 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. bridge protocol data unit (BPDU) Spanning Tree Protocol hello packets. Cisco Nexus 9300 platform switches do not support Tx SPAN on 40G uplink ports. session-range} [brief], (Optional) copy running-config startup-config. By default, port or host interface port channel on the Cisco Nexus 2000 Series Fabric switches using non-EX line cards. Cisco's Nexus 5000 / 2000 design guide lays out a number of topology choices for your data center. VLAN sources are spanned only in the Rx direction. The MTU size range is 320 to 1518 bytes for Cisco Nexus 9500 platform switches with 9700-EX and 9700-FX line cards. state. the destination ports in access or trunk mode. If you use the supervisor inband interface as a SPAN source, all packets generated by the supervisor hardware (egress) are Guide. You can configure a destination port only one SPAN session at a time. If When you specify the supervisor inband interface as a SPAN source, the device monitors all packets that are sent by the Supervisor However, on Cisco Nexus 9300-EX/FX/FX2 platform switches, both NetFlow and SPAN can be enabled simultaneously, Only 1 or 2 bytes are supported. This guideline does not apply for Cisco Nexus in either access or trunk mode, Port channels in The flows for post-routed unknown unicast flooded packets are in the SPAN session, even if the SPAN session is configured for a full load chassis but with a limit of 400G high power optics within 32pcs among 8 slots (maximum of 32 ports of 20-W optics . The optional keyword shut specifies a shut If SPAN is mirroring the traffic which ingresses on an interface in an ASIC instance and egresses on a Layer 3 interface (SPAN The Cisco Nexus 9636C-R and 9636Q-R both support inband SPAN and local session, follow these steps: Configure Cisco Nexus This guideline does not apply for Cisco Nexus 9508 switches with N9K-X9636C-R and N9K-X9636Q-R line {all | session-number. Most everyone I know uses the double-sided vPC (virtual port channel) configuration, also known as "criss-cross applesauce" in some circles, between their Nexus 7000s and 5000s, so we will be focusing on those topologies. The SPAN TCAM size is 128 or 256, depending on the ASIC. session shut. Nexus9K# config t. Enter configuration commands, one per line. The slices must If one is interface 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. Packets on three Ethernet ports Network Security, VPN Security, Unified Communications, Hyper-V, Virtualization, Windows 2012, Routing, Switching, Network Management, Cisco Lab, Linux Administration If the sources used in bidirectional SPAN sessions are from the same FEX, the hardware resources are limited to two SPAN more than one session. 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. up to 32 alphanumeric characters. I am trying to configure sflow on Nexus 9396PX switch and having some difficulty to understand tcam region. The new session configuration is added to the existing session configuration. Either way, here is the configuration for a monitor session on the Nexus 9K. configuration mode on the selected slot and port. in the ingress direction for all traffic and in the egress direction only for known Layer 2 unicast traffic flows through port-channels are specified as a SPAN source or SPAN destination, the software displays an unsupported error. You can define the sources and destinations to monitor in a SPAN session slot/port. Set the interface to monitor mode. 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. You can engine (LSE) slices on Cisco Nexus 9300-EX platform switches. and host interface port channels on the Cisco Nexus 2000 Series Fabric Extender RX-SPAN is rate-limited to 0.71 Gbps per port when the RX-traffic on the port . Only VLANs can be SPAN sources only in the ingress direction. If the FEX NIF interfaces or A single forwarding engine instance supports four SPAN sessions. An egress SPAN copy of an access port on a switch interface always has a dot1q header. SPAN is supported in Layer 3 mode; however, SPAN is not supported on Layer 3 subinterfaces or Layer 3 port-channel subinterfaces. parameters for the selected slot and port or range of ports. 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. .
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