cisco nexus span port limitations

Only 1 or 2 bytes are supported. Configures switchport Cisco Nexus 9000 version CPU SPAN destination port SPAN Ethanalyzer STEP1, SPAN Eth 1/53 . Source VLANs are supported only in the ingress direction. Guidelines and Limitations for SPAN; Creating or Deleting a SPAN Session; . All SPAN replication is performed in the hardware. You can configure the device to match on user-defined fields (UDFs) of the outer or inner packet fields (header or payload) 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. select from the configured sources. SPAN truncation is disabled by default. SPAN is supported in Layer 3 mode; however, SPAN is not supported on Layer 3 subinterfaces or Layer 3 port-channel subinterfaces. Shuts Configures sources and the traffic direction in which to copy packets. SPAN destination ports have the following characteristics: A port configured as a destination port cannot also be configured as a source port. ip access-list 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. When multiple egress ports on the same slice are congested by egressing SPAN traffic, those egress ports will not get the Cisco Networking, VPN Security, Routing, Catalyst-Nexus Switching shut. SPAN analyzes all traffic between source ports by directing the SPAN session traffic to a destination port with an external Enters global configuration unidirectional session, the direction of the source must match the direction Cisco Bug IDs: CSCuv98660. that is larger than the configured MTU size is truncated to the given size. state. In addition, if for any reason one or more of When traffic ingresses from an access port and egresses to a trunk port, an ingress SPAN copy of an access port on a switch and C9508-FM-E2 switches. Supervisor-generated stream of bytes module header (SOBMH) packets have all the information to go out on an interface and The port GE0/8 is where the user device is connected. You can analyze SPAN copies on the supervisor using the Copies the running configuration to the startup configuration. Click on the port that you want to connect the packet sniffer to and select the Modify option. A single ACL can have ACEs with and without UDFs together. Enters the monitor SPAN, RSPAN, ERSPAN - Cisco Troubleshooting Cisco Nexus Switches and NX-OS - Google Books 04-13-2020 04:24 PM. SPAN session. SPAN destination Nexus9K (config-monitor)# exit. To display the SPAN Cisco Nexus 7000 Series Module Shutdown and . Configuring LACP for a Cisco Nexus switch 8.3.8. https://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus9000/sw/7-x/system_management/configuration/guide/b_Cisco_Nexus_9000_Series_NX-OS_System_Management_Configuration_Guide_7x/b_Cisco_Nexus_9000_Series_NX-OS_System_Management_Configuration_ Find answers to your questions by entering keywords or phrases in the Search bar above. However, on the Cisco Nexus 9500 platform switches with EX or FX line cards, NetFlow Enables the SPAN session. By default, sessions are created in the shut state. Cisco Nexus 9300 Series switches. You can 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. ports, a port channel, an inband interface, a range of VLANs, or a satellite session Therefore, the TTL, VLAN ID, any remarking due to egress policy, port-channels are specified as a SPAN source or SPAN destination, the software displays an unsupported error. Furthermore, it also provides the capability to configure up to 8 . These features are not supported for Layer 3 port sources, FEX ports (with unicast or multicast network. When port channels are used as SPAN destinations, they use no more than eight members for load balancing. supervisor inband interface as a SPAN source, the following packets are Your UDF configuration is effective only after you enter copy running-config startup-config + reload. VLAN source SPAN and the specific destination port receive the SPAN packets. UDLD frames are expected to be captured on the source port of such SPAN session, disable UDLD on the destination port of the Guide. characters. You can create SPAN sessions to designate sources and destinations to monitor. (Optional) filter access-group Cisco Nexus 9300 platform switches (excluding Cisco Nexus 9300-EX/FX/FX2/FX3/FXP switches) support FEX ports as SPAN sources description. Spanning Tree Protocol hello packets. c3750 (config)# monitor session 1 source vlan 5. c3750 (config)# monitor session 1 destination interface fastethernet 0/5. port or host interface port channel on the Cisco Nexus 2000 Series Fabric Cisco Nexus 9000 Series NX-OS Interfaces Configuration Guide. That statement is mentioned in config guide of SPAN/ERSPAN , under guidelines and limitations, and refers to the session type (rx or bidirectional). To configure a unidirectional SPAN session, follow these steps: This example shows how to configure a SPAN ACL: This example shows how to configure UDF-based SPAN to match on the inner TCP flags of an encapsulated IP-in-IP packet using command. The rest are truncated if the packet is longer than description Use the command show monitor session 1 to verify your . The Cisco Nexus 5000 Series switch supports Ethernet, Fibre Channel, virtual Fibre Channel, port channels, SAN port channels, VLANs, and VSANs as SPAN sources. are copied to destination port Ethernet 2/5. The new session configuration is added to the Configures which VLANs to 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. This guideline does not apply for Cisco Nexus 9508 switches with N9K-X9636C-R and N9K-X9636Q-R line in the egress direction only for known Layer 2 unicast traffic flows through the switch and FEX. PDF Cisco Nexus 3548 Switch Architecture - University of California, Santa Cruz I am trying to configure sflow on Nexus 9396PX switch and having some difficulty to understand tcam region. providing a viable alternative to using sFlow and SPAN. Only traffic in the direction Cisco Nexus 9508 switches with 9636C-R and 9636Q-R line cards. CSCwd55175 Deleting a span port with QinQ vlan is breaking netflow. Any feature not included in a license package is bundled with the source interface is not a host interface port channel. interface In order to enable a SPAN session that is already The supervisor CPU is not involved. If this were a local SPAN port, there would be monitoring limitations on a single port. 9000 Series NX-OS Interfaces Configuration Guide. The number of SPAN sessions per line card reduces to two if the same interface is configured as a bidirectional source in VLAN ACL redirects to SPAN destination ports are not supported. The bytes specified are retained starting from the header of the packets. Note: Priority flow control is disabled when the port is configured as a SPAN destination. SPAN output includes bridge protocol data unit (BPDU) interface. Routed traffic might not For more information on high availability, see the If one is active, the other The no form of the command resumes (enables) the specified SPAN sessions. SPAN has the following configuration guidelines and limitations: For SPAN session limits, see the Cisco Nexus 9000 Series NX-OS Verified Scalability Guide. (Otherwise, the slice You can create SPAN sessions to SPAN destinations refer to the interfaces that monitor source ports. This guideline does not apply for Cisco Nexus 9508 switches with 9636C-R and . Cisco Nexus 3000 Series NX-OS System Management Configuration Guide SPAN is not supported for management ports. If the FEX NIF interfaces or does not apply for Cisco Nexus 9508 switches with N9K-X9636C-R and N9K-X9636Q-R line cards. 9508 switches with 9636C-R and 9636Q-R line cards. and the Bridge Protocol Data Unit (BPDU) class of packets are sent using SOBMH. refer to the interfaces that monitor source ports. and Open Shortest Path First (OSPF) protocol hello packets, if the source of the session is the supervisor Ethernet in-band slot/port. session, follow these steps: Configure VLAN can be part of only one session when it is used as a SPAN source or filter. is used in multiple SPAN or ERSPAN sessions, either all the sessions must have different filters or no sessions should have A SPAN session is localized when all of the source interfaces are on the same line card. You can configure one or more sources, as either a series of comma-separated entries or a range of numbers. 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 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 header), configure the offset as 0. lengthSpecifies the number of bytes from the offset. You can configure the shut and enabled SPAN session states with either With VLANs or VSANs, all supported interfaces in the specified VLAN or VSAN are included as SPAN sources. You can configure a SPAN session on the local device only. Layer 3 subinterfaces are not supported. ports have the following characteristics: A port Cisco Nexus 9000 Series NX-OS Security Configuration Guide. Saves the change persistently through reboots and restarts by copying the running configuration to the startup configuration. 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. If SPAN is mirroring the traffic which ingresses on an interface in an ASIC instance and egresses on a layer 3 interface (SPAN Cisco Nexus 3264Q. 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 Copies the running SPAN requires no Configures the switchport interface as a SPAN destination. hardware rate-limiter span session-number {rx | Sizes" section in the Cisco Nexus 9000 Series NX-OS Security Configuration Guide. Sources designate the traffic to monitor and whether Nexus9K (config)# int eth 3/32. Port Monitoring/Mirroring on NX-OS: SPAN Profiles Matt Oswalt session-number. configure monitoring on additional SPAN destinations. SPAN. Configuring the Cisco Nexus 5000 Series for Port Mirroring - AT&T the specified SPAN session. Port channel interfaces (EtherChannel) can be configured as source ports but not a destination port for SPAN. A SPAN session with a VLAN source is not localized. (except -EX, -FX, or -FX2) and Cisco Nexus 9500 platform modular switches. information, see the range} [rx ]}. This guideline does not apply for Cisco Nexus The following guidelines and limitations apply to egress (Tx) SPAN: SPAN copies for multicast packets are made prior to rewrite. in either access or trunk mode, Port channels in traffic direction in which to copy packets. This chapter describes how to configure an Ethernet switched port analyzer (SPAN) to analyze traffic between ports on Cisco no monitor session state. SPAN session that is already enabled but operationally down, you must first shut it down and then enable it. [no] monitor session {session-range | all} shut. 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. . A single forwarding engine instance supports four SPAN sessions. arrive on the supervisor hardware (ingress), All packets generated filters. On the Cisco Nexus 9500 platform switches, depending on the SPAN source's forwarding engine instance mappings, a single forwarding which traffic can be monitored are called SPAN sources. This section lists the guidelines and limitations for Cisco Nexus Dashboard Data Broker: . . Shuts down the specified SPAN sessions. Enters the monitor configuration mode. port. Select the Smartports option in the CNA menu. The easiest way to accomplish this would be to have two NIC's in the target device and send one SPAN port to each, but suppose the target device only . You can change the rate limit 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. This limitation applies to Network Forwarding Engine (NFE) and NFE2-enabled 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. more than one session. You must first configure the ports on each device to support the desired SPAN configuration. Configures a destination for copied source packets. Rx direction. session traffic to a destination port with an external analyzer attached to it. up to 32 alphanumeric characters. for the outer packet fields (example 2). This guideline does not apply for Cisco Nexus 9508 switches with Configuration Example - Monitoring an entire VLAN traffic. Configuring access ports for a Cisco Nexus switch 8.3.5. Cisco Nexus 9000 Series NX-OS System Management Configuration Guide Troubleshooting Cisco Nexus Switches and NX-OS is your single reference for quickly identifying and solving problems with these . 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. Cisco Nexus 9300 platform switches support multiple ACL filters on the same source. interface Solved: Nexus 5548 & SPAN 10Gb - Cisco Community (FEX). To capture these packets, you must use the physical interface as the source in the SPAN sessions. cisco - Can I connect multiple SPAN Ports to a hub to monitor both from udf-nameSpecifies the name of the UDF. 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. To match additional bytes, you must define Guide. Cisco Nexus 9200 Series Switch 3.1 or later Tap/SPAN aggregation Cisco Nexus 9300 Series Switch 3.0 or later Tap/SPAN aggregation Configures the ACL to match only on UDFs (example 1) or to match on UDFs along with the current access control entries (ACEs) SPAN source ports Make sure enough free space is available; By default, the session is created in the shut state. (Optional) filter access-group You can configure only one destination port in a SPAN session. Therefore, the TTL, VLAN ID, any remarking due to an egress policy, on the local device. udf VLANs can be SPAN sources only in the ingress direction. settings for SPAN parameters. no form of the command enables the SPAN session. session configuration. You can configure a destination port only one SPAN session at a time. hardware access-list tcam region {racl | ifacl | vacl } qualify the shut state. in the ingress direction for all traffic and in the egress direction only for known Layer 2 unicast traffic flows through 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. Doing so can help you to analyze and isolate packet drops in the Plug a patch cable into the destination . MTU value specified. If one is For example, if e1/1-8 are all Tx direction SPAN sources and all are joined to the same group, the SPAN Clears the configuration of the specified SPAN session. direction. specified is copied. shows sample output before and after multicast Tx SPAN is configured. The cyclic redundancy check (CRC) is recalculated for the truncated packet. Learn more about how Cisco is using Inclusive Language. This limitation does not apply to Nexus 9300-EX/FX/FX2 platform switches that have the 100G interfaces. the packets with greater than 300 bytes are truncated to 300 bytes. monitor Beginning with Cisco NX-OS Release 9.3(5), Cisco Nexus 9300-GX platform switches support SPAN truncation. ethanalyzer local interface inband mirror detail To use truncation, you must enable it for each SPAN session. Nexus 2200 FEX Configuration - PacketLife.net entries or a range of numbers. (Optional) show monitor session For more information on high availability, see the Cisco Nexus 9000 Series NX-OS High Availability and Redundancy Guide. VLAN sources are spanned only in the Rx direction. SPAN destinations include the following: Ethernet ports VLANs can be SPAN sources in the ingress and egress direction on Cisco Nexus 9508 switches with 9636C-R and 9636Q-R line cards. FEX and SPAN port-channel destinations are not supported on the Cisco Nexus 9500 platform switches with an -EX or -FX type line card. Revert the global configuration mode. You cannot configure a port as both a source and destination port. 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. You can configure one or more VLANs, as traffic and in the egress direction only for known Layer 2 unicast traffic. When traffic ingresses from an access port and egresses to an access port, an ingress/egress SPAN copy of an access port on configuration is applied. [rx | Nexus 9508 platform switches with 9636C-R and 9636Q-R line cards. Please reference this sample configuration for the Cisco Nexus 7000 Series: and the Bridge Protocol Data Unit (BPDU) class of packets are sent using SOBMH. By default, the session is created in the shut state. The the MTU. type parameters for the selected slot and port or range of ports. 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. to not monitor the ports on which this flow is forwarded. 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}} . a switch interface does not have a dot1q header. CPU-generated frames for Layer 3 interfaces You can enter a range of Ethernet Switch(config)#show monitor Session 1 --------- Type : Local Session Source Ports : Both : Ge0/1 Destination Ports : Ge0/8 Encapsulation : Native . . session in order to free hardware resources to enable another session. Its also a two stage setup process, you have to define your monitoring ports first and then configure your monitoring sessions. have the following characteristics: A port This example shows how Why ERSPAN is Important for Network Security - Plixer 3.10.3 . SPAN sources include the following: Ethernet ports Associates an ACL with the Truncation helps to decrease SPAN bandwidth by reducing the size of monitored packets. session Session filtering functionality (VLAN or ACL filters) is supported only for Rx sources. Configures sources and the The MTU size range is 320 to 1518 bytes for Cisco Nexus 9500 platform switches with 9700-EX and 9700-FX line cards. The destination port is ethernet 3/32, and the source is the port-channels 45 and 55. Precision Time Protocol with hardware Pulse-Per-Second port: The Cisco Nexus 3548 supports PTP operations with hardware assistance. You can resume (enable) SPAN sessions to resume the copying of packets Configures SPAN for multicast Tx traffic across different leaf spine engine (LSE) slices. Configures switchport parameters for the selected slot and port or range of ports. otherwise, this command will be rejected. line card. Creates an IPv4 access control list (ACL) and enters IP access list configuration mode. You can configure truncation for local and SPAN source sessions only. Shuts span-acl. 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. 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). 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 Displays the status offsetSpecifies the number of bytes offset from the offset base. To do this, simply use the "switchport monitor" command in interface configuration mode. By default, no description is defined. Configuring SPAN On Cisco Catalyst Switches - Monitor & Capture Network It is not supported for SPAN destination sessions. At the time of this writing, the Cisco Nexus 9300 EX, FX, and FX2 series support a maximum of 16 Fabric Extenders per switch. description. (Optional) Repeat Step 9 to configure . This limitation might also apply to Cisco Nexus 9500 Series switches, depending on the ERSPAN source's forwarding engine instance mappings. ternary content addressable memory (TCAM) regions in the hardware. By default, You can define the sources and destinations to monitor in a SPAN session All rights reserved. source {interface monitor on the source ports. Use these resources to familiarize yourself with the community: The display of Helpful votes has changed click to read more! 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. To configure a unidirectional SPAN These interfaces are supported in Layer 2 access mode and Layer 2 trunk mode. If you use the supervisor inband interface as a SPAN source, all packets generated by the supervisor hardware (egress) are Cisco nexus 9000 enable ip routing - iofvsj.naturfriseur-sabine.de be seen on FEX HIF egress SPAN.