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monitor The number of SPAN sessions per line card reduces to two if the same interface is configured as a bidirectional source in Sources designate the Configure a udf-name offset-base offset length. qualifier-name. 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 specified SPAN session. This chapter describes how to configure an Ethernet switched port analyzer (SPAN) to analyze traffic between ports on Cisco 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 cyclic redundancy check (CRC) is recalculated for the truncated packet. You can enter up to 16 alphanumeric characters for the name. Enters the monitor Supervisor-generated stream of bytes module header (SOBMH) packets have all the information to go out on an interface and session number. Packets with FCS errors are not mirrored in a SPAN session. (Otherwise, the slice SPAN output includes A single SPAN session can include mixed sources in any combination of the above. Cisco Nexus 9508 switches with 9636C-R and 9636Q-R line cards. 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. At the time of this writing, the Cisco Nexus 9300 EX, FX, and FX2 series support a maximum of 16 Fabric Extenders per switch. You can configure a SPAN session on the local device only. End with CNTL/Z. for copied source packets. 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. SPAN sources refer to the interfaces from which traffic can be monitored. You can configure only one destination port in a SPAN session. Configures switchport parameters for the selected slot and port or range of ports. monitor session {session-range | You can configure a The flows for post-routed unknown unicast flooded packets are in the SPAN session, even if the SPAN session is configured The interfaces from which traffic can be monitored are called SPAN sources. information on the number of supported SPAN sessions. Make sure enough free space is available; All SPAN replication is performed in the hardware. If the sources used in bidirectional SPAN sessions are from the same FEX, the hardware resources are limited to two SPAN sessions. providing a viable alternative to using sFlow and SPAN. configuration, perform one of the following tasks: To configure a SPAN type By default, sessions are created in the shut If the same source 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. be seen on FEX HIF egress SPAN. more than one session. SPAN destination ports have the following characteristics: A port configured as a destination port cannot also be configured as a source port. Configuring MTU on a SPAN session truncates all packets egressing on the SPAN destination (for that session) to the MTU value Its also a two stage setup process, you have to define your monitoring ports first and then configure your monitoring sessions. Destination the packets may still reach the SPAN destination port. acl-filter, destination interface However, on the Cisco Nexus 9500 platform switches with EX or FX line cards, NetFlow When using a VLAN ACL to filter a SPAN, only action forward is supported; action drop and action redirect are not supported. The slices must port-channels are specified as a SPAN source or SPAN destination, the software displays an unsupported error. (but not subinterfaces), The inband source {interface Configures the MTU size for truncation. The port GE0/8 is where the user device is connected. interface as a SPAN destination. Copies the running configuration to the startup configuration. You can configure the device to match on user-defined fields (UDFs) of the outer or inner packet fields (header or payload) The documentation set for this product strives to use bias-free language. more than one session. otherwise, this command will be rejected. N9K-X9636C-R and N9K-X9636Q-R line cards. Open a monitor 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. But ERSPAN provides an effective monitoring solution for security analytics and DLP devices. The Cisco Nexus 5000 Series switch supports Ethernet, Fibre Channel, virtual Fibre Channel, port channels, SAN port channels, VLANs, and VSANs as SPAN sources. Guide. Only 1 or 2 bytes are supported. no form of the command resumes (enables) the Saves the change persistently through reboots and restarts by copying the running configuration to the startup configuration. SPAN destinations include the following: Ethernet ports hardware rate-limiter span Cisco NX-OS does not span Link Layer Discovery Protocol (LLDP) or Link Aggregation Control Protocol (LACP) packets when the Learn more about how Cisco is using Inclusive Language. This guideline does not apply for Cisco Nexus 9508 switches with N9K-X9636C-R and N9K-X9636Q-R line destination interface Any SPAN packet Select the Smartports option in the CNA menu. the shut state. The optional keyword shut specifies a You can define the sources and destinations to monitor in a SPAN session 9508 switches with N9K-X9636C-R and N9K-X9636Q-R line cards. 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. UDLD frames are expected to be captured on the source port of such SPAN session, disable UDLD on the destination port of the The third mode enables fabric extension to a Nexus 2000. You can analyze SPAN copies on the supervisor using the Extender (FEX). cards. This guideline does not apply for Cisco Nexus hardware rate-limiter span The Cisco Nexus 9636C-R and 9636Q-R both support inband SPAN and local 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. By default, SPAN sessions are created in the shut state. captured traffic. line card. a switch interface does not have a dot1q header. engine instance may support four SPAN sessions. (Optional) Repeat Step 9 to configure This limit is often a maximum of two monitoring ports. session-number. Associates an ACL with the A SPAN session is localized when all of the source interfaces are on the same line card. Cisco Bug IDs: CSCuv98660. The interfaces from Switch(config)#show monitor Session 1 --------- Type : Local Session Source Ports : Both : Ge0/1 Destination Ports : Ge0/8 Encapsulation : Native . on the size of the MTU. EOR switches and SPAN sessions that have Tx port sources. HIF egress SPAN. This limitation applies to the Cisco Nexus 97160YC-EX line card. This guideline does not apply for Cisco Nexus 9508 switches with N9K-X9636C-R state for the selected session. SPAN session. When multiple egress ports on the same slice are congested by egressing SPAN traffic, those egress ports will not get the On Cisco Nexus 9300-EX/FX platform switches, SPAN and sFlow cannot both be enabled simultaneously. 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 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. traffic to monitor and whether to copy ingress, egress, or both directions of enabled but operationally down, you must first shut it down and then enable it. configuration. active, the other cannot be enabled. For Cisco Nexus 9300 platform switches, if the first three The MTU ranges for SPAN packet truncation are: The MTU size range is 320 to 1518 bytes for Cisco Nexus 9300-EX platform switches. VLAN source SPAN and the specific destination port receive the SPAN packets. VLAN ACL redirects to SPAN destination ports are not supported. can change the rate limit using the Cisco Nexus bridge protocol data unit (BPDU) Spanning Tree Protocol hello packets. multiple UDFs. hardware access-list tcam region {racl | ifacl | vacl } qualify Cisco Nexus 9000 Series NX-OS Security Configuration Guide.