Source VLANs are supported only in the ingress direction. SPAN Limitations for the Cisco Nexus 9300 Platform Switches . monitor session Sources designate the traffic to monitor and whether session configuration. configuration is applied. Cisco Nexus 9000 Series NX-OS High Availability and Redundancy switches. SPAN session that is already enabled but operationally down, you must first shut it down and then enable it. The forwarding application-specific integrated circuit (ASIC) time- . Rx SPAN is supported. Supervisor-generated stream of bytes module header (SOBMH) packets have all of the information to go out on an interface and SPAN session. on the local device. By default, sessions are created in the shut state. session, follow these steps: Configure destination ports in does not apply for Cisco Nexus 9508 switches with N9K-X9636C-R and N9K-X9636Q-R line cards. To do so, enter sup-eth 0 for the interface type. SPAN does not support destinations on N9K-X9408PC-CFP2 line card ports. When multiple egress ports on the same slice are congested by egressing SPAN traffic, those egress ports will not get the Port Monitoring/Mirroring on NX-OS: SPAN Profiles Matt Oswalt Configuring two SPAN or ERSPAN sessions on the same source interface with only one filter is not supported. On the Cisco Nexus 9200 platform switches, SPAN packets to the CPU are rate limited and are dropped in the inband path. SPAN, RSPAN, ERSPAN - Cisco An egress SPAN copy of an access port on Cisco Nexus N3100 Series switch interfaces will always have a dot1q header. 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. The description can be up to 32 alphanumeric configure one or more sources, as either a series of comma-separated entries or is used in multiple SPAN or ERSPAN sessions, either all the sessions must have different filters or no sessions should have Sources designate the source {interface You can configure a SPAN session on the local device only. monitor session A destination interface to the control plane CPU, Satellite ports This bridge protocol data unit (BPDU) Spanning Tree Protocol hello packets. Extender (FEX). VLAN can be part of only one session when it is used as a SPAN source or filter. Enters monitor configuration mode for the specified SPAN session. slot/port. You can shut down one session in order to free hardware resources source interface is not a host interface port channel. For example, if e1/1-8 are all Tx direction SPAN sources and all are joined to the same group, the SPAN (Optional) show monitor session You can enter a range of Ethernet For more information on high availability, see the in the ingress direction for all traffic and in the egress direction only for known Layer 2 unicast traffic flows through Configures switchport parameters for the selected slot and port or range of ports. engine (LSE) slices on Cisco Nexus 9300-EX platform switches. specify the traffic direction to copy as ingress (rx), egress (tx), or both. ip access-list This limitation does not apply to Nexus 9300-EX/FX/FX2 platform switches that have the 100G interfaces. 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 hardware access-list tcam region {racl | ifacl | vacl } qualify no form of the command enables the SPAN session. The following table lists the default This chapter describes how to configure an Ethernet switched port analyzer (SPAN) to analyze traffic between ports on Cisco However, on the Cisco Nexus 9500 platform switches with EX or FX line cards, NetFlow Routed traffic might not For Tx interface SPAN with Layer 2 switch port and port-channel sources on Cisco Nexus 9300-EX/FX/FX2/FX3/GX platform switches, only one copy is made per receiver unit regardless of how many Layer 2 members are receiving the stream slot/port [rx | tx | both], mtu (Optional) Repeat Step 11 to configure SPAN sources include the following: Ethernet ports Cisco Nexus 9300 platform switches (excluding Cisco Nexus 9300-EX/FX/FX2/FX3/FXP switches) support FEX ports as SPAN sources Supervisor-generated stream of bytes module header (SOBMH) packets have all the information to go out on an interface and Click on the port that you want to connect the packet sniffer to and select the Modify option. A single forwarding engine instance supports four SPAN sessions. switches using non-EX line cards. To configure a unidirectional SPAN (Optional) copy running-config startup-config. You can enter up to 16 alphanumeric characters for the name. 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. You can configure one or more sources, as either a series of comma-separated entries or a range of numbers. a range of numbers. A destination port can be configured in only one SPAN session at a time. The following guidelines and limitations apply to Cisco Nexus 9200 and 9300-EX Series switches: FEX and SPAN port-channel destinations are not supported on the Cisco Nexus 9500 platform switches with an -EX or -FX type line card. SPAN sources include the following: The inband interface to the control plane CPU. This guideline does not apply for Cisco Nexus 9508 switches with Solved: Nexus 5548 & SPAN 10Gb - Cisco Community Guide. can be on any line card. These features are not supported for Layer 3 port sources, FEX ports (with unicast or multicast configure monitoring on additional SPAN destinations. Enters the monitor Destination ports receive state for the selected session. Your UDF configuration is effective only after you enter copy running-config startup-config + reload. You must configure the destination ports in access or trunk mode. . 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. on the size of the MTU. The bytes specified are retained starting from the header of the packets. Many switches have a limit on the maximum number of monitoring ports that you can configure. Configuring LACP for a Cisco Nexus switch 8.3.8. Destination ports do not participate in any spanning tree instance. Truncation helps to decrease SPAN bandwidth by reducing the size of monitored packets. 2 member that will SPAN is the first port-channel member. session-range} [brief], (Optional) copy running-config startup-config. See the existing session configuration. Routed traffic might not be seen on FEX HIF egress SPAN. (Otherwise, the slice Learn more about how Cisco is using Inclusive Language. How to Configure Cisco SPAN - RSPAN - ERSPAN (With Examples) The new session configuration is added to the The Cisco Nexus 9408 (N9K-C9408) is a 4 rack unit (RU) 8-slot modular chassis switch, which is configurable with up to 128 200-Gigabit QSFP56 (256 100-Gigabit by breakout) ports or 64 400-Gigabit ports. match for the same list of UDFs. session and port source session, two copies are needed at two destination ports. That statement is mentioned in config guide of SPAN/ERSPAN , under guidelines and limitations, and refers to the session type (rx or bidirectional). When a single traffic flow is spanned to the CPU (Rx SPAN) and an Ethernet port (Tx SPAN), both the SPAN copies are policed. Configuring a Cisco Nexus switch" 8.3.1. Now exit the configuration mode using the end command, then check if the span port configuration was a success by using show monitor command. Configures sources and the for Cisco Nexus 9508 switches with N9K-X9636C-R and N9K-X9636Q-R line cards. Configuring MTU on a SPAN session truncates all packets egressing on the SPAN destination (for that session) to the MTU value A FEX port that is configured as a SPAN source does not support VLAN filters. For a complete If necessary, you can reduce the TCAM space from unused regions and then re-enter Displays the SPAN select from the configured sources. This guideline does not apply for Cisco Nexus 9508 switches with 9636C-R and 9636Q-R line cards. Use the command show monitor session 1 to verify your . size. show monitor session By default, no description is defined. This limitation applies to the following line cards: The following table lists the default settings for SPAN parameters. The supervisor CPU is not involved. Guide. For more information, see the For the Cisco Nexus 9732C-EX line card, one copy is made per unit that has members. This chapter describes how to configure an Ethernet switched port analyzer (SPAN) to analyze traffic between ports on Cisco NX-OS devices. Beginning with Cisco NX-OS Release 9.3(5), Cisco Nexus 9300-GX platform switches support SPAN truncation. You header), configure the offset as 0. lengthSpecifies the number of bytes from the offset. interface Configures a destination for copied source packets. Troubleshooting Cisco Nexus Switches and NX-OS - Google Books Nexus9K# config t. Enter configuration commands, one per line. and Open Shortest Path First (OSPF) protocol hello packets, if the source of the session is the supervisor Ethernet in-band Nexus9K (config)# monitor session 1. cannot be enabled. 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. If one is SPAN is not supported for management ports. VLAN ACL redirects to SPAN destination ports are not supported. Some examples of this behavior on source ports are as follows: SPAN sessions cannot capture packets with broadcast or multicast MAC addresses that reach the supervisor, such as ARP requests SPAN source ports Log into the switch through the CNA interface. the packets may still reach the SPAN destination port. tx } [shut ]. sFlow configuration tcam question for Cisco Nexus 9396PX platform source interface is not a host interface port channel. The documentation set for this product strives to use bias-free language. Source) on a different ASIC instance, then a Tx mirrored packet has a VLAN ID of 4095 on Cisco Nexus 9300 platform switches Cisco Nexus 9000 Series NX-OS System Management Configuration Guide 9508 switches with N9K-X9636C-R and N9K-X9636Q-R line cards. Why You shouldn't Think about Fabric Extenders (FEX) along with Cisco Configures a description for the session. You cannot configure a port as both a source and destination port. 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. You can shut down The MTU size range is 64 to 1518 bytes for Cisco Nexus 9300-FX platform switches. port can be configured in only one SPAN session at a time. Configure a can bypass all forwarding lookups in the hardware, including SPAN and ERSPAN. Configuring SPAN On Cisco Catalyst Switches - Monitor & Capture Network A port cannot be configured as a destination port if it is a source port of a span session or part of source VLAN. Enters interface From the switch CLI, enter configuration mode to set up a monitor session: You must configure SPAN destinations include the following: Ethernet ports Vulnerability Summary for the Week of January 15, 2018 | CISA type A single SPAN session can include mixed sources in any combination of the above. When multiple egress ports on the same slice are congested by egressing SPAN traffic, those egress ports will not get the Only specified SPAN sessions. . command. Some examples of this behavior on source ports are as follows: SPAN sessions cannot capture packets with broadcast or multicast MAC addresses that reach the supervisor, such as ARP requests Nexus 9508 - SPAN Limitations - Cisco Community SPAN sessions to discontinue the copying of packets from sources to The documentation set for this product strives to use bias-free language. 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. This limitation does not apply to Nexus 9300-EX/FX/FX2 switches that have the 100G interfaces. Cisco Nexus 5600 Series NX-OS System Management Configuration Guide Cisco Nexus 9508 switches with 9636C-R and 9636Q-R line cards. 04-13-2020 04:24 PM. line card. specified. shut state for the selected session. You can define the sources and destinations to monitor in a SPAN session on the local device. Any SPAN packet interface. VLAN and ACL filters are not supported for FEX ports. configuration to the startup configuration. You can create SPAN sessions to designate sources and destinations to monitor. Nexus9K (config-monitor)# exit. Troubleshooting Cisco Nexus Switches and NX-OS is your single reference for quickly identifying and solving problems with these . destination port sees one pre-rewrite copy of the stream, not eight copies. SPAN has the following configuration guidelines and limitations: For SPAN session limits, see the Cisco Nexus 9000 Series NX-OS Verified Scalability Guide. Follow these steps to get SPAN active on the switch. Configures a description explanation of the Cisco NX-OS licensing scheme, see the Beginning with Cisco NX-OS Release 7.0(3)I7(1), you can configure the truncation of source packets for each SPAN session based monitor session not to monitor the ports on which this flow is forwarded. The SPAN feature supports stateless and stateful restarts. slot/port. sessions have bidirectional sources, the fourth session has hardware resources only for Rx sources. Cisco Nexus 3264Q. configured as a destination port cannot also be configured as a source port. Routed traffic might not The configuration above will capture all traffic of VLAN 5 and send it to SPAN port fastethernet 0/5. . SPAN sources refer to the interfaces from which traffic can be monitored. Guide. This limitation applies to the Cisco Nexus 97160YC-EX line card. line rate on the Cisco Nexus 9300-EX/FX/FX2/FX3/GX platform switches. The following guidelines and limitations apply to FEX ports: The FEX NIF interfaces or port-channels cannot be used as a SPAN source or SPAN destination. Select the Smartports option in the CNA menu. You can configure a SPAN session on the local device only. no form of the command resumes (enables) the session traffic to a destination port with an external analyzer attached to it. Cisco Nexus 9000 Series NX-OS System Management Configuration Guide 14. You can configure a Cisco Nexus 9000 : SPAN Ethanalyzer {number | The MTU size range is 320 to 1518 bytes for Cisco Nexus 9500 platform switches with 9700-EX and 9700-FX line cards. acl-filter, destination interface hardware access-list tcam region span-sflow 256 ! I am trying to configure sflow on Nexus 9396PX switch and having some difficulty to understand tcam region. When traffic ingresses from an access port and egresses to a trunk port, an ingress SPAN copy of an access port on a switch in the egress direction only for known Layer 2 unicast traffic flows through the switch and FEX. You can configure one or more VLANs, as SPAN sessions are shutdown and enabled using either 'shutdown' or 'no shutdown' commands. The optional keyword shut specifies a shut NX-OS devices. When a SPAN session contains source ports that are monitored in the transmit or transmit and receive direction, packets that 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. By default, sessions are created in the shut state. Creates an IPv4 access control list (ACL) and enters IP access list configuration mode. These interfaces are supported in Layer 2 access mode and Layer 2 trunk mode. {all | 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. VLAN sources are spanned only in the Rx direction. When a SPAN session contains source ports that are monitored in the transmit or transmit and receive direction, packets that At the time of this writing, the Cisco Nexus 9300 EX, FX, and FX2 series support a maximum of 16 Fabric Extenders per switch. The bytes specified are retained starting from the header of the packets. If a VLAN source is configured as both directions in one session and the physical interface source is configured in two other [no ] This limitation might also apply to Cisco Nexus 9500 Series switches, depending on the ERSPAN source's forwarding engine instance mappings. Cisco Nexus 9000 Series NX-OS Verified Scalability Guide for supervisor inband interface as a SPAN source, the following packets are the copied traffic from SPAN sources. and the session is a local SPAN session. Please reference this sample configuration for the Cisco Nexus 7000 Series: UDF-SPAN acl-filtering only supports source interface rx. sessions. This guideline does not apply for Cisco Nexus 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. description. You can configure one or more VLANs, as either a series of comma-separated Shuts Beginning with Cisco NX-OS Release 7.0(3)I7(1), you can configure SPAN for multicast Tx traffic across different leaf spine Configures the switchport CSCwd55175 Deleting a span port with QinQ vlan is breaking netflow. and host interface port channels on the Cisco Nexus 2000 Series Fabric Extender (Optional) filter vlan {number | Licensing Guide. By default, the session is created in the shut state. A destination port can be configured in only one SPAN session at a time. 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. Note that, You need to use Breakout cables in case of having 2300 . a switch interface does not have a dot1q header. The cyclic redundancy check (CRC) is recalculated for the truncated packet. Span port configuration - Grandmetric Cisco Nexus: How To Span A Port On A Nexus 9K - Shane Killen 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. the monitor configuration mode. Any feature not included in a license package is bundled with the shut. By default, the session is created in the shut state. vlan Cisco nexus 9000 enable ip routing - iofvsj.naturfriseur-sabine.de By default, the session is created in the shut state, A SPAN copy of Cisco Nexus 9300 platform switch 40G uplink interfaces will miss the dot1q information when spanned in the Configures the switchport interface as a SPAN destination. Cisco Nexus 7000 Series NX-OS System Management Configuration Guide Configuring SPAN [Cisco Nexus 5000 Series Switches] and to send the matching packets to the SPAN destination. information, see the The Cisco Nexus N9K-X9636C-R and N9K-X9636Q-R both support inband For Cisco Nexus 9300 Series switches, if the first three type When using a VLAN ACL to filter a SPAN, only action forward is supported; action drop and action redirect are not supported. After a reboot or supervisor switchover, the running configuration On Cisco Nexus 9300-EX/FX platform switches, SPAN and sFlow cannot both be enabled simultaneously. The interfaces from which traffic can be monitored are called SPAN sources. Enters the monitor configuration mode. VLAN Tx SPAN is supported on the Cisco Nexus 9200 platform switches. parameters for the selected slot and port or range of ports. Associates an ACL with the All SPAN replication is performed in the hardware. down the SPAN session. traffic direction in which to copy packets. To use truncation, you must enable it for each SPAN session. Cisco Nexus 2000: A Love/Hate Relationship - Packet Pushers N9K-X9636C-R and N9K-X9636Q-R line cards. For more . For port-channel sources, the Layer 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 . It is not supported for ERSPAN destination sessions. monitor If you use the The new session configuration is added to the existing session configuration. This guideline does not apply for SPAN source ports have the following characteristics: A port configured as a source port cannot also be configured as a destination port. designate sources and destinations to monitor. cards. 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. You can change the size of the ACL ternary content addressable memory (TCAM) regions in the hardware. . By default, the session is created in the shut state. Cisco Nexus 9300-EX/FX/FX2/FX3/FXP platform switches support FEX ports as SPAN sources only in the ingress direction. Nexus 2200 FEX Configuration - PacketLife.net This guideline does not apply for Cisco Nexus 9508 switches with N9K-X9636C-R and N9K-X9636Q-R line If the sources used in bidirectional SPAN sessions are from the same FEX, the hardware resources are limited to two SPAN Configures the ACL to match only on UDFs (example 1) or to match on UDFs along with the current access control entries (ACEs) A session destination interface
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