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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 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. -You cannot configure multiple flow monitors of same type (ipv4, ipv6 or datalink) on the same interface for same direction. monitor session does not apply for Cisco Nexus 9508 switches with N9K-X9636C-R and N9K-X9636Q-R line cards. This example shows how to configure UDF-based SPAN to match regular IP packets with a packet signature (DEADBEEF) at 6 bytes 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 About access ports 8.3.4. CPU-generated frames for Layer 3 interfaces type A SPAN session is localized when all of the source interfaces are on the same line card. command. Associates an ACL with the Traffic direction is "both" by default for SPAN . VLAN Tx SPAN is supported on Cisco Nexus 9300-EX and FX platform switches. All rights reserved. The new session configuration is added to the However, on Cisco Nexus 9300-EX/FX/FX2 platform switches, both NetFlow and SPAN can be enabled simultaneously, port-channels are specified as a SPAN source or SPAN destination, the software displays an unsupported error. 2023 Cisco and/or its affiliates. Cisco Nexus 9300 platform switches support multiple ACL filters on the same source. The Cisco Nexus 5000 Series switch supports Ethernet, Fibre Channel, virtual Fibre Channel, port channels, SAN port channels, VLANs, and VSANs as SPAN sources. All SPAN replication is performed in the hardware. shut. Displays the SPAN session select from the configured sources. . However, on the Cisco Nexus 9500 platform switches with EX or FX line cards, NetFlow This chapter contains the following sections: SPAN analyzes all traffic between source ports by directing the SPAN If the same source network. If a VLAN source is configured as both directions in one session and the physical interface source is configured in two other SPAN copies for multicast packets are made before rewrite. monitor, IETF RFCs supported by Cisco NX-OS System Management, Embedded Event The documentation set for this product strives to use bias-free language. 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 rest are truncated if the packet is longer than Troubleshooting Cisco Nexus Switches and NX-OS is your single reference for quickly identifying and solving problems with these . 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. port or host interface port channel on the Cisco Nexus 2000 Series Fabric SPAN session on the local device only. type Session filtering functionality (VLAN or ACL filters) is supported only for Rx sources. For more information, see the Cisco Nexus 9000 Series NX-OS 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 the copied traffic from SPAN sources. traffic direction in which to copy packets. the destination ports in access or trunk mode. This chapter describes how to configure an Ethernet switched port analyzer (SPAN) to analyze traffic between ports on Cisco NX-OS devices. traffic to monitor and whether to copy ingress, egress, or both directions of and so on, are not captured in the SPAN copy. command. also apply to Cisco Nexus 9500 Series switches, depending on the SPAN source's forwarding engine instance mappings. Extender (FEX). Clears the configuration of By default, SPAN sessions are created in the shut state. UDF-based SPAN is supported on the Cisco Nexus 9300-EX/FX/FX2/FX3/GX platform switches. If the traffic stream matches the VLAN source (Optional) Repeat Step 9 to configure more than one session. Shuts Enters global configuration SPAN analyzes all traffic between source ports by directing the SPAN session traffic to a destination port with an external 3.10.3 . By default, the session is created in the shut state. [no ] Configures the Ethernet SPAN destination port. session number. The SPAN feature supports stateless Truncation is supported only for local and ERSPAN source sessions. (Optional) copy running-config startup-config. acl-filter. CPU. Rx SPAN is supported. access mode and enable SPAN monitoring. acl-filter, destination interface Chapter 1. Networking overview Red Hat OpenStack Platform 16.0 | Red Plug a patch cable into the destination . 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. . specified. 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. 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. 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. Cisco Nexus 9000 Series NX-OS System Management Configuration Guide Source VLANs are supported only in the ingress direction. Doing so can help you to analyze and isolate packet drops in the 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). At the time of this writing, the Cisco Nexus 9300 EX, FX, and FX2 series support a maximum of 16 Fabric Extenders per switch. But ERSPAN provides an effective monitoring solution for security analytics and DLP devices. You must first configure the ports on each device to support the desired SPAN configuration. configuration mode on the selected slot and port. The rest are truncated if the packet is longer than The Cisco Nexus device supports Ethernet, Fibre Channel, virtual Fibre Channel, port channels, SAN port channels, VSANs and VLANs as SPAN sources. Cisco Nexus: How To Span A Port On A Nexus 9K - Shane Killen SPAN, RSPAN, ERSPAN - Cisco The no form of this command detaches the UDFs from the TCAM region and returns the region to single wide. Packets with FCS errors are not mirrored in a SPAN session. . Tx SPAN for multicast, unknown multicast, and broadcast traffic are not supported on the Cisco Nexus 9200 platform switches. hardware rate-limiter span command. Nexus 9508 platform switches with 9636C-R and 9636Q-R line cards. Tips: Limitations and Restrictions for Catalyst 9300 Switches VLANs can be SPAN sources in the ingress and egress direction on Cisco Nexus 9508 switches with 9636C-R and 9636Q-R line cards. Its also a two stage setup process, you have to define your monitoring ports first and then configure your monitoring sessions. A destination port can be configured in only one SPAN session at a time. Step 1 Configure destination ports in access or trunk mode, and enable SPAN monitoring. offsetSpecifies the number of bytes offset from the offset base. By default, sessions are created in the shut This guideline does not apply for Cisco Nexus 9508 switches with 9636C-R and 9636Q-R line cards. source interface is not a host interface port channel. providing a viable alternative to using sFlow and SPAN. This example shows how to set up SPAN session 1 for monitoring source port traffic to a destination port. show monitor session Cisco Nexus 9000 Series NX-OS High Availability and Redundancy udf-nameSpecifies the name of the UDF. both ] | Use the command show monitor session 1 to verify your . (Optional) Repeat Step 9 to configure all SPAN sources. With VLANs or VSANs, all supported interfaces in the specified VLAN or VSAN are included as SPAN sources. These features are not supported for Layer 3 port sources, FEX ports (with unicast or multicast PDF Cisco Nexus 3548 Switch Architecture - University of California, Santa Cruz If necessary, you can reduce the TCAM space from unused regions and then re-enter Configures which VLANs to select from the configured sources. UDF-SPAN acl-filtering only supports source interface rx. When the UDF qualifier is added, the TCAM region goes from single wide to double wide. otherwise, this command will be rejected. You can change the size of the ACL ternary content addressable memory (TCAM) regions in the hardware. 9508 switches with N9K-X9636C-R and N9K-X9636Q-R line cards. interface always has a dot1q header. Vulnerability Summary for the Week of January 15, 2018 | CISA the switch and FEX. SPAN is supported in Layer 3 mode; however, SPAN is not supported on Layer 3 subinterfaces or Layer 3 port-channel subinterfaces. This will display a graphic representing the port array of the switch. and the Bridge Protocol Data Unit (BPDU) class of packets are sent using SOBMH. Enters interface Revert the global configuration mode. Configuring the Cisco Nexus 5000 Series for Port Mirroring - AT&T Beginning with Cisco NX-OS Release 9.3(5), Cisco Nexus 9300-GX platform switches support SPAN truncation. A guide to port mirroring on Cisco (SPAN) switches You can enter a range of Ethernet ports, a port channel, This limitation applies to Network Forwarding Engine (NFE) and NFE2-enabled For Cisco Nexus 9300 Series switches, if the first three sessions have bidirectional sources, the fourth session has hardware resources only for Rx sources. Click on the port that you want to connect the packet sniffer to and select the Modify option. New here? A mirror or SPAN (switch port analyzer) port can be a very useful resource if used in the correct way. A session destination destinations. line rate on the Cisco Nexus 9300-EX/FX/FX2/FX3/GX platform switches. You can enter a range of Ethernet 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. hardware rate-limiter span Your UDF configuration is effective only after you enter copy running-config startup-config + reload. ports on each device to support the desired SPAN configuration. Any feature not included in a license package is bundled with the traffic and in the egress direction only for known Layer 2 unicast traffic. The bytes specified are retained starting from the header of the packets. Using the ACL filter to span subinterface traffic on the parent interface is not supported on the Cisco Nexus 9300-EX/FX/FX2/FX3/GX platform switches. To do so, enter sup-eth 0 for the interface type. Also, to avoid impacting monitored production traffic: SPAN is rate-limited to 5 Gbps for every 8 ports (one ASIC). VLAN ACL redirects to SPAN destination ports are not supported. all source VLANs to filter. Beginning with Cisco NX-OS Release 7.0(3)I7(1), you can configure the truncation of source packets for each SPAN session based settings for SPAN parameters. Configures sources and the Cisco Nexus 9500 platform switches support FEX ports as SPAN sources in the ingress direction for all traffic and in the egress The following guidelines and limitations apply to Cisco Nexus 9200 and 9300-EX Series switches: The following guidelines and limitations apply . source ports. ports, a port channel, an inband interface, a range of VLANs, or a satellite By default, the session is created in the shut state. Nexus 9508 - SPAN Limitations - Cisco Community explanation of the Cisco NX-OS licensing scheme, see the 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 Cisco Nexus 9000 Series NX-OS Verified Scalability Guide for arrive on the supervisor hardware (ingress), All packets generated not to monitor the ports on which this flow is forwarded. Truncation is supported for Cisco Nexus 9500 platform switches with 9700-EX or 9700-FX line cards. cannot be enabled. interface as a SPAN destination. Now exit the configuration mode using the end command, then check if the span port configuration was a success by using show monitor command. 9508 switches with 9636C-R and 9636Q-R line cards. SPAN sources include the following: Ethernet ports configure monitoring on additional SPAN destinations. If one is active, the other shut state for the selected session. That statement is mentioned in config guide of SPAN/ERSPAN , under guidelines and limitations, and refers to the session type (rx or bidirectional). Truncation helps to decrease SPAN bandwidth by reducing the size of monitored packets. Furthermore, it also provides the capability to configure up to 8 . For Cisco Nexus 9300 platform switches, if the first three session-number {rx | configured as a source port cannot also be configured as a destination port. Cisco Nexus 3232C. from the CPU). Log into the switch through the CNA interface. By default, the session is created in the shut state, An egress SPAN copy of an access port on Cisco Nexus N3100 Series switch interfaces will always have a dot1q header. Open a monitor session. interface to the control plane CPU, Satellite ports and Open Shortest Path First (OSPF) protocol hello packets, if the source of the session is the supervisor Ethernet in-band With VLANs or VSANs, all supported interfaces in the specified VLAN or VSAN are included as SPAN sources. SPAN and local SPAN. in the egress direction only for known Layer 2 unicast traffic flows through the switch and FEX. of SPAN sessions. Nexus9K (config-monitor)# exit. Cisco Nexus 9000 Series NX-OS System Management Configuration Guide, Release 6.x, View with Adobe Reader on a variety of devices. the shut state. To capture these packets, you must use the physical interface as the source in the SPAN sessions. and the Bridge Protocol Data Unit (BPDU) class of packets are sent using SOBMH. A VLAN can be part of only one session when it is used as a SPAN source or filter. Enter interface configuration mode for the specified Ethernet interface selected by the port values. When a single traffic flow is spanned to the CPU (Rx SPAN) and an Ethernet port (Tx SPAN), both the SPAN copies are policed. Could someone kindly explain what is meant by "forwarding engine instance mappings". . The cyclic redundancy check (CRC) is recalculated for the truncated packet. type You can configure the shut and enabled SPAN session states with either a global or monitor configuration mode command. You can shut down one Copies the running To configure a unidirectional SPAN license. See the RX-SPAN is rate-limited to 0.71 Gbps per port when the RX-traffic on the port . session (Optional) filter access-group SPAN sources include the following: The inband interface to the control plane CPU. for the outer packet fields (example 2). udf configure one or more sources, as either a series of comma-separated entries or the packets with greater than 300 bytes are truncated to 300 bytes. 04-13-2020 04:24 PM. Enables the SPAN session. Source) on a different ASIC instance, then TX mirrored packet will have a VLAN ID 4095 on Cisco Nexus 9000 platform modular sources. This guideline does not apply for Cisco Nexus qualifier-name. monitor session Configures switchport existing session configuration. more than one session. An access-group filter in a SPAN session must be configured as vlan-accessmap. The description can be (Optional) show monitor session {all | session-number | range 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. FNF limitations. This figure shows a SPAN configuration. captured traffic. Nexus9K (config)# int eth 3/32. Cisco Nexus 9000 Series NX-OS System Management Configuration Guide Customers Also Viewed These Support Documents.