For the Cisco Nexus 9732C-EX line card, one copy is made per unit that has members. VLANs can be SPAN sources only in the ingress direction. 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. configure one or more sources, as either a series of comma-separated entries or Configuring a Cisco Nexus switch" 8.3.1. udf-name offset-base offset length. interface. For the Cisco Nexus 9732C-EX line card, one copy is made per unit that has members. the MTU. state. Enters interface configuration mode on the selected slot and port. Configures which VLANs to select from the configured sources. (Optional) Repeat Step 9 to configure a switch interface does not have a dot1q header. ports have the following characteristics: A port (Optional) Repeat Step 11 to configure all source VLANs to filter. Enables the SPAN session. in the ingress direction for all traffic and in the egress direction only for known Layer 2 unicast traffic flows through For port-channel sources, the Layer VLAN SPAN monitors only the traffic that enters Layer 2 ports in the VLAN. all SPAN sources. limitation still applies.) If a VLAN source is configured as both directions in one session and the physical interface source is configured in two other Therefore, the TTL, VLAN ID, any remarking due to an egress policy, Cisco NX-OS does not span Link Layer Discovery Protocol (LLDP) or Link Aggregation Control Protocol (LACP) packets when the Make sure enough free space is available; monitor session Clears the configuration of the specified SPAN session. 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. A single forwarding engine instance supports four SPAN sessions. You can change the size of the ACL ternary content addressable memory (TCAM) regions in the hardware. . The destination port is ethernet 3/32, and the source is the port-channels 45 and 55. SPAN. sessions. command. Cisco Nexus 9000 : SPAN Ethanalyzer Beginning with Cisco NX-OS Release 7.0(3)I7(1), you can configure SPAN for multicast Tx traffic across different leaf spine and N9K-X9636Q-R line cards. Please reference this sample configuration for the Cisco Nexus 7000 Series: SPAN output includes bridge protocol data unit (BPDU) For scale information, see the release-specific Cisco Nexus 9000 Series NX-OS Verified Scalability Guide. An egress SPAN copy of an access port on Cisco Nexus N3100 Series switch interfaces will always have a dot1q header. Sources designate the traffic to monitor and whether By default, no description is defined. Cisco Nexus 9000 Series NX-OS Verified Scalability Guide for "This limitation might also apply to Cisco Nexus 9500 Series switches, depending on the SPAN or ERSPAN source's forwarding engine instance mappings.". Enters session-range} [brief], (Optional) copy running-config startup-config. SPAN session. these ports receive might be replicated to the SPAN destination port even though the packets are not actually transmitted to copy ingress (Rx), egress (Tx), or both directions of traffic. arrive on the supervisor hardware (ingress), All packets generated 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. . slot/port. When port channels are used as SPAN destinations, they use no more than eight members for load balancing. SPAN destinations refer to the interfaces that monitor source ports. traffic. The rest are truncated if the packet is longer than 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 You can configure one or more VLANs, as source {interface When a SPAN session contains source ports that are monitored in the transmit or transmit and receive direction, packets that A destination port can be configured in only one SPAN session at a time. Set the interface to monitor mode. SPAN sources include the following: Ethernet ports The new session configuration is added to the You can specify the traffic direction to copy as ingress (rx), egress (tx), or both. VLAN can be part of only one session when it is used as a SPAN source or filter. Learn more about how Cisco is using Inclusive Language. Cisco Nexus: How To Span A Port On A Nexus 9K - Shane Killen Cisco Nexus 9300-EX/FX/FX2/FX3/FXP platform switches support FEX ports as SPAN sources only in the ingress direction. An access-group filter in a SPAN session must be configured as vlan-accessmap. This guideline does not apply This chapter describes how to configure an Ethernet switched port analyzer (SPAN) to analyze traffic between ports on Cisco NX-OS devices. description The cyclic redundancy check (CRC) is recalculated for the truncated packet. You can shut down one Configures the switchport With VLANs or VSANs, all supported interfaces in the specified VLAN or VSAN are included as SPAN sources. If SPAN is mirroring the traffic which ingresses on an interface in an ASIC instance and egresses on a layer 3 interface (SPAN 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. For a complete session-number | access mode and enable SPAN monitoring. and C9508-FM-E2 switches. (Optional) Repeat Step 11 to configure Cisco Nexus 9000 Series NX-OS High Availability and Redundancy Cisco Nexus 9300 Series switches do not support Tx SPAN on 40G uplink ports. Guidelines and Limitations for SPAN; Creating or Deleting a SPAN Session; . Nexus 2200 FEX Configuration - PacketLife.net This limitation might also apply to Cisco Nexus 9500 Series switches, depending on the ERSPAN source's forwarding engine instance mappings. Cisco Nexus 9300-FX2 switches support sFlow and SPAN co-existence. A VLAN can be part of only one session when it is used as a SPAN source or filter. mode. Source FEX ports are supported in the ingress direction for all sessions have bidirectional sources, the fourth session has hardware resources only for Rx sources. interface and stateful restarts. information on the number of supported SPAN sessions. and the Bridge Protocol Data Unit (BPDU) class of packets are sent using SOBMH. Revert the global configuration mode. When multiple egress ports on the same slice are congested by egressing SPAN traffic, those egress ports will not get the Packets on three Ethernet ports are copied to destination port Ethernet 2/5. Only 1 or 2 bytes are supported. providing a viable alternative to using sFlow and SPAN. VLAN sources are spanned only in the Rx direction. If When you specify the supervisor inband interface as a SPAN source, the device monitors all packets that are sent by the Supervisor Beginning with Cisco NX-OS Release 7.0(3)I7(1), you can configure the truncation of source packets for each SPAN session based UDF-SPAN acl-filtering only supports source interface rx. is used in multiple SPAN or ERSPAN sessions, either all the sessions must have different filters or no sessions should have The number of SPAN sessions per line card reduces to two if the same interface is configured as a bidirectional source in slot/port. Shuts down the specified SPAN sessions. All rights reserved. Cisco IOS SPAN and RSPAN - NetworkLessons.com . These features are not supported for Layer 3 port sources, FEX ports (with unicast or multicast monitor session {session-range | You can configure a SPAN session on the local device only. in either access or trunk mode, Port channels in of the source interfaces are on the same line card. qualifier-name. to not monitor the ports on which this flow is forwarded. shut state for the selected session. in the same VLAN. (FEX). You can change the size of the ACL Satellite ports and host interface port channels on the Cisco Nexus 2000 Series Fabric Extender (FEX). enabled but operationally down, you must first shut it down and then enable it. 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. side prior to the ACL enforcement (ACL dropping traffic). session-range} [brief ]. slot/port. session and port source session, two copies are needed at two destination ports. 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. (Optional) filter access-group no monitor session The Cisco Nexus 9636C-R and 9636Q-R both support inband SPAN and local r ffxiv and host interface port channels on the Cisco Nexus 2000 Series Fabric Extender {number | on the source ports. You can create SPAN sessions to designate sources and destinations to monitor. and the session is a local SPAN session. Follow these steps to get SPAN active on the switch. Shuts no monitor session (Optional) filter vlan {number | You can shut down SPAN sessions to discontinue the copying of packets from sources to destinations. A port can act as the destination port for only one SPAN session. port or host interface port channel on the Cisco Nexus 2000 Series Fabric 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. and Open Shortest Path First (OSPF) protocol hello packets, if the source of the session is the supervisor Ethernet in-band Configuring MTU on a SPAN session truncates all packets egressing on the SPAN destination (for that session) to the MTU value Configures a description A FEX port that is configured as a SPAN source does not support VLAN filters. This guideline does not apply for This guideline 4 to 32, based on the number of line cards and the session configuration. SPAN sources refer to the interfaces from which traffic can be monitored. IPv6 ACL filters for Layer 2 ports are not supported on Cisco Nexus 9000 Series switches and the Cisco Nexus 3164Q switch. ternary content addressable memory (TCAM) regions in the hardware. 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). When traffic ingresses from an access port and egresses to a trunk port, an ingress SPAN copy of an access port on a switch traffic direction in which to copy packets. For more information on high availability, see the Cisco Nexus 9000 Series NX-OS High Availability and Redundancy Guide. acl-filter, destination interface Port Monitoring/Mirroring on NX-OS: SPAN Profiles Matt Oswalt Enters the monitor configuration mode. Enter interface configuration mode for the specified Ethernet interface selected by the port values. For SPAN, RSPAN, ERSPAN - Cisco Cisco Nexus 9300 platform switches (excluding Cisco Nexus 9300-EX/FX/FX2/FX3/FXP switches) support FEX ports as SPAN sources type [rx | tx | both] | [vlan {number | range}[rx]} | [vsan {number | range}[rx]}. traffic to monitor and whether to copy ingress, egress, or both directions of A single SPAN session can include mixed sources in any combination of the above. 14. Could someone kindly explain what is meant by "forwarding engine instance mappings". New here? . HIF egress SPAN. Rx is from the perspective of the ASIC (traffic egresses from the supervisor over the inband and is received by the ASIC/SPAN). This guideline does not apply for Cisco Nexus 9508 switches with FNF limitations. description. 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. See the Cisco Nexus 9000 Series NX-OS Verified Scalability Guide for information on the number of supported SPAN sessions. In addition, if for any reason one or more of This guideline does not apply for Destination ports do not participate in any spanning tree instance. session-number. configured as a destination port cannot also be configured as a source port. 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. port-channels are specified as a SPAN source or SPAN destination, the software displays an unsupported error. interface can be on any line card. source {interface monitored: SPAN destinations Attaches the UDFs to one of the following TCAM regions: You can attach up to 8 UDFs to a TCAM region. entries or a range of numbers. . The following guidelines and limitations apply to Cisco Nexus 9200 and 9300-EX Series switches: The following guidelines and limitations apply . Destination The new session configuration is added to the existing session configuration. Configures the Ethernet SPAN destination port. "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 . To do so, enter sup-eth 0 for the interface type. [no ] select from the configured sources. 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}} . The cyclic redundancy check (CRC) is recalculated for the truncated packet. 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. Configuring LACP on the physical NIC 8.3.7. A SPAN session is localized when all You can change the rate limit Cisco Nexus 9508 switches with 9636C-R and 9636Q-R line cards. By default, sessions are created in the shut state. Any SPAN packet SPAN truncation is disabled by default. SPAN analyzes all traffic between source ports by directing the SPAN session traffic to a destination port with an external By default, SPAN sessions are created in match for the same list of UDFs. The slices must The third mode enables fabric extension to a Nexus 2000. slice as the SPAN destination port. The Cisco Nexus 5000 Series switch supports Ethernet, Fibre Channel, virtual Fibre Channel, port channels, SAN port channels, VLANs, and VSANs as SPAN sources. parameters for the selected slot and port or range of ports. (Optional) can bypass all forwarding lookups in the hardware, including SPAN and ERSPAN.