existing session configuration. 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). By default, sessions are created in the shut state. Packets with FCS errors are not mirrored in a SPAN session. specified in the session. also apply to Cisco Nexus 9500 Series switches, depending on the SPAN source's forwarding engine instance mappings. Limitations of SPAN on Cisco Catalyst Models. Furthermore, it also provides the capability to configure up to 8 . direction. This guideline does not apply for Cisco Nexus When you specify a VLAN as a SPAN source, all supported interfaces in the VLAN are SPAN sources. Creates an IPv4 access control list (ACL) and enters IP access list configuration mode. offsetSpecifies the number of bytes offset from the offset base. interface as a SPAN destination. You can resume (enable) SPAN sessions to resume the copying of packets from sources to destinations. r ffxiv Displays the status VLANs can be SPAN sources in the ingress and egress direction on Cisco Nexus 9508 switches with 9636C-R and 9636Q-R line cards. Shuts down the SPAN session. which traffic can be monitored are called SPAN sources. Tx SPAN of CPU-generated packets is not supported on Cisco Nexus 9200 platform switches. 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 ports have the following characteristics: A port All SPAN replication is performed in the hardware. SPAN Limitations for the Cisco Nexus 9300 Platform Switches . hardware rate-limiter span For Cisco Nexus 9300 Series switches, if the first three sessions have bidirectional sources, the fourth session has hardware resources only for Rx sources. Cisco Nexus 3264Q. If Therefore, the TTL, VLAN ID, any remarking due to egress policy, active, the other cannot be enabled. For a complete Precision Time Protocol with hardware Pulse-Per-Second port: The Cisco Nexus 3548 supports PTP operations with hardware assistance. on the local device. Enters interface configuration mode on the selected slot and port. This guideline does not apply for A SPAN session with a VLAN source is not localized. of SPAN sessions. (except -EX, -FX, or -FX2) and Cisco Nexus 9500 platform modular switches. Saves the change persistently through reboots and restarts by copying the running configuration to the startup configuration. hardware rate-limiter span captured traffic. 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. The no form of this command detaches the UDFs from the TCAM region and returns the region to single wide. Each ACE can have different UDF fields to match, or all ACEs can This guideline does not apply for Cisco Nexus 9508 switches with 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}} . If one is active, the other It is not supported for SPAN destination sessions. Cisco Nexus 9000 version CPU SPAN destination port SPAN Ethanalyzer STEP1, SPAN Eth 1/53 . qualifier-name. specify the traffic direction to copy as ingress (rx), egress (tx), or both. SPAN is supported in Layer 3 mode; however, SPAN is not supported on Layer 3 subinterfaces or Layer 3 port-channel subinterfaces. You can Configuring access ports for a Cisco Nexus switch 8.3.5. 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. and the Bridge Protocol Data Unit (BPDU) class of packets are sent using SOBMH. bridge protocol data unit (BPDU) Spanning Tree Protocol hello packets. Open a monitor session. entries or a range of numbers. applies to the following switches: Cisco Nexus 92348GC-X, Cisco Nexus 9332C, and Cisco Nexus 9364C switches, Cisco Nexus 9300-EX, -FX, -FX2, -FX3, -GX platform switches, Cisco Nexus 9504, 9508, and 9516 platform switches with -EX and -FX line cards. can change the rate limit using the The A port can act as the destination port for only one SPAN session. Configures sources and the Select the Smartports option in the CNA menu. Beginning with Cisco NX-OS Release 9.3(5), Cisco Nexus 9300-GX platform switches support SPAN truncation. a range of numbers. interface. This applies to all switches except Cisco Nexus 9300-EX/-FX/-FX2/-FX3/-GX platform switches, and Cisco Nexus 9500 series platform switches with -EX/-FX line cards. interface. By default, no description is defined. The SPAN TCAM size is 128 or 256, depending on the ASIC. Configuring MTU on a SPAN session truncates all of the packets egressing on the SPAN destination (for that session) to the To capture these packets, you must use the physical interface as the source in the SPAN sessions. For information on the The new session configuration is added to the existing session configuration. line card. For more information, see the The supervisor CPU is not involved. type [rx | tx | both] | [vlan {number | range}[rx]} | [vsan {number | range}[rx]}. configure one or more sources, as either a series of comma-separated entries or Associates an ACL with the range Cisco Nexus 9000 Series NX-OS Security Configuration Guide. Shuts For Enters the monitor configuration mode. session-range} [brief], (Optional) copy running-config startup-config. All rights reserved. command. cannot be enabled. The slices must udf-name offset-base offset length. Plug a patch cable into the destination . [no ] session The Cisco Nexus device supports Ethernet, Fibre Channel, virtual Fibre Channel, port channels, SAN port channels, VSANs and VLANs as SPAN sources. SPAN copies for multicast packets are made before rewrite. 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 shut. SPAN and local SPAN. those ports drops the packets on egress (for example, due to congestion), the packets may still reach the SPAN destination an inband interface, a range of VLANs, or a satellite port or host interface port channel on the Cisco Nexus 2000 Series Fabric 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 . 9508 switches with N9K-X9636C-R and N9K-X9636Q-R line cards. End with CNTL/Z. the copied traffic from SPAN sources. About LACP port aggregation 8.3.6. Truncation is supported only for local and ERSPAN source sessions. show monitor session SPAN requires no in the same VLAN. If the traffic stream matches the VLAN source down the specified SPAN sessions. Configures the switchport the MTU. 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. VLAN and ACL filters are not supported for FEX ports. . The forwarding application-specific integrated circuit (ASIC) time- . SPAN has the following configuration guidelines and limitations: For SPAN session limits, see the Cisco Nexus 9000 Series NX-OS Verified Scalability Guide. Enters the monitor This guideline does not apply for Cisco Nexus 9508 switches with 9636C-R and 9636Q-R line cards. Session filtering functionality (VLAN or ACL filters) is supported only for Rx sources. An egress SPAN copy of an access port on Cisco Nexus N3100 Series switch interfaces will always have a dot1q header. description. 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. Routed traffic might not You can create SPAN sessions to A destination port can be configured in only one SPAN session at a time. engine instance may support four SPAN sessions. You Truncation helps to decrease SPAN bandwidth by reducing the size of monitored packets. Set the interface to monitor mode. 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. You must configure the destination ports in access or trunk mode. Session filtering functionality (VLAN or ACL filters) is supported only for Rx sources. session, follow these steps: Configure destination ports in Multiple ACL filters are not supported on the same source. . SPAN session. That statement is mentioned in config guide of SPAN/ERSPAN , under guidelines and limitations, and refers to the session type (rx or bidirectional). You cannot configure a port as both a source and destination port. to not monitor the ports on which this flow is forwarded. Cisco Nexus 9508 switches with 9636C-R and 9636Q-R line cards. 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. the packets may still reach the SPAN destination port. You can configure one or more VLANs, as By default, no description is defined. You can resume (enable) SPAN sessions to resume the copying of packets SPAN sessions to discontinue the copying of packets from sources to (Optional) Repeat Step 11 to configure destination interface This chapter describes how to configure an Ethernet switched port analyzer (SPAN) to analyze traffic between ports on Cisco NX-OS devices. 2023 Cisco and/or its affiliates. Configures switchport parameters for the selected slot and port or range of ports.