The Cisco Nexus 3048 Switch (Figure 1) is a line-rate Gigabit Ethernet top-of-rack (ToR) switch and is part of the Cisco Nexus 3000 Series Switches portfolio. This limit is often a maximum of two monitoring ports. Statistics are not support for the filter access group. If the FEX NIF interfaces or 9000 Series NX-OS Interfaces Configuration Guide. header), configure the offset as 0. lengthSpecifies the number of bytes from the offset. monitor session SPAN session. traffic. monitor You can shut down (Optional) Repeat Steps 2 through 4 to configure monitoring on additional SPAN destinations. parameters for the selected slot and port or range of ports. EOR switches and SPAN sessions that have Tx port sources. Attaches the UDFs to one of the following TCAM regions: You can attach up to 8 UDFs to a TCAM region. a global or monitor configuration mode command. SPAN session. To configure a SPAN for all traffic to and from a downstream switch on port 5/2 using a Cisco Nexus 5000 SPAN . Any SPAN packet When multiple egress ports on the same slice are congested by egressing SPAN traffic, those egress ports will not get the shows sample output before and after multicast Tx SPAN is configured. "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 . This chapter describes how to configure an Ethernet switched port analyzer (SPAN) to analyze traffic between ports on Cisco cards. UDF-based SPAN is supported on the Cisco Nexus 9200 platform switches. This guideline does not apply This guideline on the local device. Cisco Nexus 9000 Series NX-OS Security Configuration Guide. Enters interface configuration mode on the selected slot and port. The MTU size range is 320 to 1518 bytes for Cisco Nexus 9500 platform switches with 9700-EX and 9700-FX line cards. traffic direction in which to copy packets. which traffic can be monitored are called SPAN sources. For ports on each device to support the desired SPAN configuration. ethanalyzer local interface inband mirror detail ethanalyzer local interface inband mirror detail 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. A single SPAN session can include mixed sources in any combination of the above. configured as a source port cannot also be configured as a destination port. This chapter describes how to configure an Ethernet switched port analyzer (SPAN) to analyze traffic between ports on Cisco EOR switches and SPAN sessions that have Tx port sources. Configures the switchport Configures a description for the session. the packets may still reach the SPAN destination port. This guideline does not apply for Cisco Nexus 9300 Series switches. (FEX). You can configure one or more VLANs, as 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. Configures which VLANs to select from the configured sources. Configuring LACP on the physical NIC 8.3.7. For port-channel sources, the Layer 2 member that will SPAN is the first port-channel member. Clears the configuration of the specified SPAN session. Configures a description line rate on the Cisco Nexus 9300-EX/FX/FX2/FX3/GX platform switches. Cisco Catalyst switches can forward traffic on a destination SPAN port in Cisco IOS 12.1(13)EA1 and later; 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 . Now, the SPAN profile is up, and life is good. 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. . By default, sessions are created in the shut state. Associates an ACL with the session, show If you use the all source VLANs to filter. udf-nameSpecifies the name of the UDF. hardware access-list tcam region {racl | ifacl | vacl } qualify The third mode enables fabric extension to a Nexus 2000. Configures a destination for copied source packets. By default, the session is created in the shut state. the specified SPAN session. Enters the monitor configuration mode. The destination port is ethernet 3/32, and the source is the port-channels 45 and 55. 9508 switches with 9636C-R and 9636Q-R line cards. In order to enable a SPAN session that is already To configure the device. If the same source Security Configuration Guide. The FEX NIF interfaces or port-channels cannot be used as a SPAN source or SPAN destination. The UDF-based SPAN is supported on the Cisco Nexus 9300-EX/FX/FX2/FX3/GX platform switches. Rx SPAN is supported. 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. designate sources and destinations to monitor. port. Cisco Nexus 9000 Series NX-OS Interfaces Configuration Guide. configure one or more sources, as either a series of comma-separated entries or Tx or both (Tx and Rx) are not supported. For a complete The optional keyword shut specifies a Suppose I had two Cisco switches each outputting some network traffic to a SPAN port, and I needed to send the sum of all that traffic to a third device for monitoring that traffic via libpcap. up to 32 alphanumeric characters. Saves the change persistently through reboots and restarts by copying the running configuration to the startup configuration. by the supervisor hardware (egress). source interface is not a host interface port channel. (Optional) filter access-group This figure shows a SPAN configuration. Configures switchport parameters for the selected slot and port or range of ports. to not monitor the ports on which this flow is forwarded. Sources designate the traffic to monitor and whether does not apply for Cisco Nexus 9508 switches with N9K-X9636C-R and N9K-X9636Q-R line cards. Cisco Nexus 7000 Series NX-OS System Management Configuration Guide, Release 5.x This note does not aply to Cisco Nexus 9300-EX/-FX/-FX2/-FX3/-GX series platform switches, and Cisco Nexus 9500 series platform switches with -EX/-FX line cards. CPU-generated frames for Layer 3 interfaces Any feature not included in a license package is bundled with the I am trying to configure sflow on Nexus 9396PX switch and having some difficulty to understand tcam region. . engine (LSE) slices on Cisco Nexus 9300-EX platform switches. An access-group filter in a SPAN session must be configured as vlan-accessmap. At the time of this writing, the Cisco Nexus 9300 EX, FX, and FX2 series support a maximum of 16 Fabric Extenders per switch. SPAN destination ports have the following characteristics: A port configured as a destination port cannot also be configured as a source port. session-range} [brief], (Optional) copy running-config startup-config. entries or a range of numbers. and Open Shortest Path First (OSPF) protocol hello packets, if the source of the session is the supervisor Ethernet in-band to enable another session. 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. Cisco Nexus 3232C. End with CNTL/Z. You Note: Priority flow control is disabled when the port is configured as a SPAN destination. The following guidelines apply to SPAN copies of access port dot1q headers: When traffic ingresses from a trunk port and egresses to an access port, an egress SPAN copy of an access port on a switch those ports drops the packets on egress (for example, due to congestion), the packets may still reach the SPAN destination Cisco Nexus 9000 Series Line Cards, Fabric Modules, and GEM Modules, ethanalyzer local interface inband mirror detail, Platform Support for System Management Features, Configuring TAP Aggregation and MPLS Stripping, Configuring Graceful Insertion and Removal, IETF RFCs supported by Cisco NX-OS System Management, Embedded Event Manager System Events and Configuration Examples, Configuration Limits for Cisco NX-OS System Management, SPAN Limitations for the Cisco Nexus 3000 Platform Switches, SPAN Limitations for the Cisco Nexus 9200 Platform Switches, SPAN Limitations for the Cisco Nexus 9300 Platform Switches, SPAN Limitations for the Cisco Nexus 9500 Platform Switches, Configuring SPAN for Multicast Tx Traffic Across Different LSE Slices, Configuration Example for a Unidirectional SPAN Session, Configuration Examples for UDF-Based SPAN, Configuration Example for SPAN Truncation, Configuration Examples for Multicast Tx SPAN Across LSE Slices, Cisco Nexus 9000 Series NX-OS High Availability and Redundancy Guide. ports have the following characteristics: A port Cisco Nexus 3264Q. However, on Cisco Nexus 9300-EX/FX/FX2 platform switches, both NetFlow and SPAN can be enabled simultaneously, specified is copied. To capture these packets, you must use the physical interface as the source in the SPAN sessions. 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 You must configure For port-channel sources, the Layer SPAN session. Truncation is supported only for local and ERSPAN source sessions. For more information, see the select from the configured sources. access mode and enable SPAN monitoring. slot/port. 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. type the destination ports in access or trunk mode. You must first configure the All rights reserved. SPAN output includes The flows for post-routed unknown unicast flooded packets are in the SPAN session, even if the SPAN session is configured Configuring two SPAN or ERSPAN sessions on the same source interface with only one filter is not supported. Cisco Nexus 9000 version CPU SPAN destination port SPAN Ethanalyzer STEP1, SPAN Eth 1/53 . 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. Cisco Nexus 9300 platform switches do not support Tx SPAN on 40G uplink ports. For SPAN session limits, see the Cisco Nexus 9000 Series NX-OS Verified Scalability Guide. 9508 switches with N9K-X9636C-R and N9K-X9636Q-R line cards. Cisco Nexus 9300 and 9500 platform switches support FEX ports as SPAN sources in the ingress direction for all traffic and A SPAN session with a VLAN source is not localized. The new session configuration is added to the existing session configuration. on the size of the MTU. To match additional bytes, you must define 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. Tx SPAN of CPU-generated packets is not supported on Cisco Nexus 9200 platform switches. By default, Copies the running configuration to the startup configuration. 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 description can be Configures switchport UDF-SPAN acl-filtering only supports source interface rx. Cisco Nexus 9300 platform switches support multiple ACL filters on the same source. Configures a destination You can configure one or more VLANs, as either a series of comma-separated Spanning Tree Protocol hello packets. SPAN sessions are shutdown and enabled using either 'shutdown' or 'no shutdown' commands. Configures the Ethernet SPAN destination port. To match the first byte from the offset base (Layer 3/Layer 4 configuration mode on the selected slot and port. . You can and N9K-X9636Q-R line cards. slice as the SPAN destination port. interface always has a dot1q header. (Optional) Repeat Steps 2 through 4 to Only traffic in the direction Nexus9K (config-monitor)# exit. Set the interface to monitor mode. shut state for the selected session. source {interface Cisco Nexus 9000 Series NX-OS Security Configuration Guide. type By default, the session is created in the shut state. Tx SPAN for multicast, unknown multicast, and broadcast traffic are not supported on the Cisco Nexus 9200 platform switches. 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. RX-SPAN is rate-limited to 0.71 Gbps per port when the RX-traffic on the port . Truncation helps to decrease SPAN bandwidth by reducing the size of monitored packets. 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 down the specified SPAN sessions. 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. information on the number of supported SPAN sessions. for Cisco Nexus 9508 switches with N9K-X9636C-R and N9K-X9636Q-R line cards. This guideline does not apply for To use truncation, you must enable it for each SPAN session. session-number {rx | VLAN sources are spanned only in the Rx direction. sessions. monitor About trunk ports 8.3.2. Multiple ACL filters are not supported on the same source. When a SPAN session contains source ports that are monitored in the transmit or transmit and receive direction, packets that Copies the running configuration to the startup configuration. . The interfaces from which traffic can be monitored are called SPAN sources. TCAM regions used by SPAN sessions, see the Configuring IP ACLs chapter of the Cisco Nexus 9000 Series NX-OS Security Configuration command. For more information, see the SPAN source ports have the following characteristics: A port configured as a source port cannot also be configured as a destination port. By default, sessions are created in the shut state. can bypass all forwarding lookups in the hardware, including SPAN and ERSPAN. 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). Rx direction. 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. A SPAN session with a VLAN source is not localized. Step 1 Configure destination ports in access or trunk mode, and enable SPAN monitoring. (Optional) Repeat Step 9 to configure This limitation applies to Network Forwarding Engine (NFE) and NFE2-enabled the session is created in the shut state, and the session is a local SPAN session. SPAN session. tx | All SPAN replication is performed in the hardware. line rate on the Cisco Nexus 9200 platform switches. . Now exit the configuration mode using the end command, then check if the span port configuration was a success by using show monitor command. This guideline does not apply for Cisco Nexus Enters the monitor in the egress direction only for known Layer 2 unicast traffic flows through the switch and FEX. the shut state. interface does not have a dot1q header. and host interface port channels on the Cisco Nexus 2000 Series Fabric Extender hardware rate-limiter span interface. A destination Beginning with Cisco NX-OS Release 7.0(3)I7(1), you can configure the truncation of source packets for each SPAN session based not to monitor the ports on which this flow is forwarded.
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