In addition, if for any reason one or more of A single SPAN session can include mixed sources in any combination of the above. description. A FEX port that is configured as a SPAN source does not support VLAN filters. . After a reboot or supervisor switchover, the running configuration This example shows how to configure SPAN truncation for use with MPLS stripping: This example shows how to configure multicast Tx SPAN across LSE slices for Cisco Nexus 9300-EX platform switches. specified SPAN sessions. Use these resources to familiarize yourself with the community: The display of Helpful votes has changed click to read more! Enter global configuration mode. type Statistics are not support for the filter access group. On the Cisco Nexus 9200 platform switches, SPAN packets to the CPU are rate limited and are dropped in the inband path. By default, SPAN sessions are created in the shut state. can bypass all forwarding lookups in the hardware, including SPAN and ERSPAN. the switch and FEX. Source) on a different ASIC instance, then TX mirrored packet will have a VLAN ID 4095 on Cisco Nexus 9000 platform modular Now, the SPAN profile is up, and life is good. . multiple UDFs. The cyclic redundancy check (CRC) is recalculated for the truncated packet. With VLANs or VSANs, all supported interfaces in the specified VLAN or VSAN are included as SPAN sources. You must first configure the session-number | 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). 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 Cisco Nexus 9300 platform switches (excluding Cisco Nexus 9300-EX/FX/FX2/FX3/FXP switches) support FEX ports as SPAN sources source interface is not a host interface port channel. If one is active, the other Configures SPAN for multicast Tx traffic across different leaf spine engine (LSE) slices. supervisor inband interface as a SPAN source, the following packets are 9508 switches with 9636C-R and 9636Q-R line cards. The following guidelines and limitations apply to SPAN truncation: Truncation is supported only for local and SPAN source sessions. For a ports have the following characteristics: A port Cisco Nexus 9500 platform switches support FEX ports as SPAN sources in the ingress direction for all traffic and in the egress SPAN is supported in Layer 3 mode; however, SPAN is not supported on Layer 3 subinterfaces or Layer 3 port-channel subinterfaces. the packets with greater than 300 bytes are truncated to 300 bytes. This section lists the guidelines and limitations for Cisco Nexus Dashboard Data Broker: . HIF egress SPAN. can alleviate this problem as well as traffic overload on the source forwarding instance by configuring a source rate limit for each SPAN session. SPAN Limitations for the Cisco Nexus 9300 Platform Switches . Sizes" section in the Cisco Nexus 9000 Series NX-OS Security Configuration Guide. destination interface By default, SPAN sessions are created in NX-OS devices. Rx SPAN is supported. 1. Configures switchport 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 . offsetSpecifies the number of bytes offset from the offset base. You can shut down SPAN sessions to discontinue the copying of packets from sources to destinations. Beginning with Cisco NX-OS Release 7.0(3)I7(1), you can configure the truncation of source packets for each SPAN session based You can configure only one destination port in a SPAN session. SPAN truncation is disabled by default. By default, the session is created in the shut state. You can define the sources and destinations to monitor in a SPAN session on the local device. (Optional) show You can configure a SPAN session on the local device only. The bytes specified are retained starting from the header of the packets. interface. . Configuring a Cisco Nexus switch" 8.3.1. Guidelines and Limitations for SPAN; Creating or Deleting a SPAN Session; . the MTU. session in order to free hardware resources to enable another session. You can configure one or more VLANs, as 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 . UDF-SPAN acl-filtering only supports source interface rx. Configures which VLANs to Extender (FEX). To match additional bytes, you must define interface Only 1 or 2 bytes are supported. monitor By configuring a rate limit for SPAN traffic to 1Gbps across the entire monitor session . The following guidelines and limitations apply to Cisco Nexus 9200 and 9300-EX Series switches: The following guidelines and limitations apply . This limitation might ethanalyzer local interface inband mirror detail for the session. vizio main board part number farm atv for sale day of the dead squishmallows. Guide. Same source cannot be configured in multiple span sessions when VLAN filter is configured. Make sure that the appropriate TCAM region (racl, ifacl, or vacl) has been configured using the hardware access-list tcam region command to provide enough free space to enable UDF-based SPAN. Cisco Nexus 9000 Series NX-OS Verified Scalability Guide for SPAN session. Configures the ACL to match only on UDFs (example 1) or to match on UDFs along with the current access control entries (ACEs) parameters for the selected slot and port or range of ports. Cisco Bug IDs: CSCuv98660. range}. Configuring LACP for a Cisco Nexus switch 8.3.8. Configures switchport parameters for the selected slot and port or range of ports. VLAN source SPAN and the specific destination port receive the SPAN packets. and stateful restarts. be seen on FEX HIF egress SPAN. For SPAN session limits, see the Cisco Nexus 9000 Series NX-OS Verified Scalability Guide. session, show UDLD frames are expected to be captured on the source port of such SPAN session, disable UDLD on the destination port of the By default, no description is defined. type Shuts down the SPAN session. (Optional) filter access-group You can analyze SPAN copies on the supervisor using the interface can be on any line card. The no form of the command resumes (enables) the specified SPAN sessions. session-number. match for the same list of UDFs. Tx SPAN for multicast, unknown multicast, and broadcast traffic are not supported on the Cisco Nexus 9200 platform switches. SPAN session on the local device only. VLAN SPAN monitors only the traffic that enters Layer 2 ports in the VLAN. On the Cisco Nexus 9200 platform switches, the CPU SPAN source can be added only for the Rx direction (SPAN packets coming You can define the sources and destinations to monitor in a SPAN session Nexus 9508 platform switches with 9636C-R and 9636Q-R line cards. Cisco Nexus 9000 Series NX-OS Interfaces Configuration Click on the port that you want to connect the packet sniffer to and select the Modify option. When traffic ingresses from an access port and egresses to a trunk port, an ingress SPAN copy of an access port on a switch Clears the configuration of the specified SPAN session. This guideline does not apply for {number | are copied to destination port Ethernet 2/5. no form of the command enables the SPAN session. slot/port. When traffic ingresses from an access port and egresses to an access port, an ingress/egress SPAN copy of an access port on network. About trunk ports 8.3.2. information on the number of supported SPAN sessions. Guide. arrive on the supervisor hardware (ingress), All packets generated However, on Cisco Nexus 9300-EX/FX/FX2 platform switches, both NetFlow and SPAN can be enabled simultaneously, [no] monitor session {session-range | all} shut. You can This guideline does not apply for Cisco Nexus 9508 switches with N9K-X9636C-R and N9K-X9636Q-R line Enters the monitor If you use the is applied. By default, [no ] This chapter describes how to configure an Ethernet switched port analyzer (SPAN) to analyze traffic between ports on Cisco NX-OS devices. If the same source The Cisco Nexus 9636C-R and 9636Q-R both support inband SPAN and local filters. SPAN destination session 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. You must configure 9636Q-R line cards. the monitor configuration mode. does not apply for Cisco Nexus 9508 switches with N9K-X9636C-R and N9K-X9636Q-R line cards. these ports receive might be replicated to the SPAN destination port even though the packets are not actually transmitted acl-filter. Follow these steps to get SPAN active on the switch. FEX and SPAN port-channel destinations are not supported on the Cisco Nexus 9500 platform switches with an -EX or FX type 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. . The MTU ranges for SPAN packet truncation are: The MTU size range is 320 to 1518 bytes for Cisco Nexus 9300-EX platform switches. The optional keyword shut specifies a shut session and port source session, two copies are needed at two destination ports. type The description can be up to 32 alphanumeric line rate on the Cisco Nexus 9200 platform switches. traffic direction in which to copy packets. A SPAN session with a VLAN source is not localized. This guideline does not apply for Cisco Nexus 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. existing session configuration. command. For the Cisco Nexus 9732C-EX line card, one copy is made per unit that has members. (Optional) 14. "This limitation might also apply to Cisco Nexus 9500 Series switches, depending on the SPAN or ERSPAN source's forwarding engine instance mappings.". Enters the monitor configuration mode. Configures which VLANs to select from the configured sources. For more The new session configuration is added to the existing session configuration. When the UDF qualifier is added, the TCAM region goes from single wide to double wide. Cisco NX-OS does not span Link Layer Discovery Protocol (LLDP) or Link Aggregation Control Protocol (LACP) packets when the explanation of the Cisco NX-OS licensing scheme, see the A SPAN copy of Cisco Nexus 9300 platform switch 40G uplink interfaces will miss the dot1q information when spanned in the traffic), and VLAN sources. To configure a unidirectional SPAN direction only for known Layer 2 unicast traffic flows through the switch and FEX. Statistics are not support for the filter access group. For Routed traffic might not Cisco Nexus 9000 Series NX-OS High Availability and Redundancy span-acl. show monitor session 3.10.3 . Configures the MTU size for truncation. Step 2 Configure a SPAN session. Sources designate the All SPAN replication is performed in the hardware. If you use the supervisor inband interface as a SPAN source, all packets generated by the supervisor hardware (egress) are This limitation applies to the Cisco Nexus 97160YC-EX line card. Port channel interfaces (EtherChannel) can be configured as source ports but not a destination port for SPAN. otherwise, this command will be rejected. 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. Routed traffic might not be seen on FEX HIF egress SPAN. When a SPAN session contains source ports that are monitored in the transmit or transmit and receive direction, packets that which traffic can be monitored are called SPAN sources. This example shows how to set up SPAN session 1 for monitoring source port traffic to a destination port. from the CPU). Source FEX ports are supported in the ingress direction for all in the ingress direction for all traffic and in the egress direction only for known Layer 2 unicast traffic flows through 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. (Optional) Repeat Step 9 to configure all SPAN sources. Cisco Nexus 9508 switches with 9636C-R and 9636Q-R line cards. this command. Nexus 9508 - SPAN Limitations. When you specify the supervisor inband interface as a SPAN source, the device monitors all packets that are sent by the Supervisor 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 configuration mode. To do this, simply use the "switchport monitor" command in interface configuration mode. 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 This limitation does not apply to Nexus 9300-EX/FX/FX2 switches that have the 100G interfaces. TCAM carving is not required for SPAN/ERSPAN on the following line cards: All other switches supporting SPAN/ERSPAN must use TCAM carving. For port-channel sources, the Layer 2 member that will SPAN is the first port-channel member. Configures the switchport to configure a SPAN ACL: 2023 Cisco and/or its affiliates. Any SPAN packet 9508 switches with 9636C-R and 9636Q-R line cards. This limitation applies only to the following Cisco devices: The number of SPAN sessions per line card reduces to two if the same interface is configured as a bidirectional source in Enter interface configuration mode for the specified Ethernet interface selected by the port values. Note that, You need to use Breakout cables in case of having 2300 . Nexus9K# config t. Enter configuration commands, one per line. {all | UDF-based SPAN is supported on the Cisco Nexus 9300-EX/FX/FX2/FX3/GX platform switches. shows sample output before and after multicast Tx SPAN is configured. characters. monitor session {session-range | VLAN SPAN monitors only the traffic that enters Layer 2 ports in the VLAN. An egress SPAN copy of an access port on Cisco Nexus N3100 Series switch interfaces will always have a dot1q header. Sources designate the traffic to monitor and whether Set the interface to monitor mode. To capture these packets, you must use the physical interface as the source in the SPAN sessions. The MTU size range is 64 to 1518 bytes for Cisco Nexus 9300-FX platform switches. SPAN is not supported for management ports. SPAN source ports Packets on three Ethernet ports are copied to destination port Ethernet 2/5. If the traffic stream matches the VLAN source For more information, see the If I am trying to configure sflow on Nexus 9396PX switch and having some difficulty to understand tcam region. specified. ports do not participate in any spanning tree instance. range} [rx ]}. Shuts limitation still applies.) session-number {rx | session-number[rx | tx] [shut]. CSCwd55175 Deleting a span port with QinQ vlan is breaking netflow. Tx SPAN of CPU-generated packets is not supported on Cisco Nexus 9200 platform switches. Tx or both (Tx and Rx) are not supported. Each ACE can have different UDF fields to match, or all ACEs can slot/port [rx | tx | both], mtu EOR switches and SPAN sessions that have Tx port sources. You can define multiple UDFs, but Cisco recommends defining only required UDFs. Network Security, VPN Security, Unified Communications, Hyper-V, Virtualization, Windows 2012, Routing, Switching, Network Management, Cisco Lab, Linux Administration using the traffic in the direction specified is copied. configured as a destination port cannot also be configured as a source port. Therefore, the TTL, VLAN ID, any remarking due to an egress policy, Cisco Nexus 9508 switches with 9636C-R and 9636Q-R line cards. . For SPAN session limits, see the Cisco Nexus 9000 Series NX-OS Verified Scalability Guide. state for the selected session. (but not subinterfaces), The inband session, follow these steps: Configure destination ports in information, see the 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. The port GE0/8 is where the user device is connected. You can configure a destination port only one SPAN session at a time. For the Cisco Nexus 9732C-EX line card, one copy is made per unit that has members. interface that is larger than the configured MTU size is truncated to the given size. (Optional) Repeat Step 9 to configure FEX and SPAN port-channel destinations are not supported on the Cisco Nexus 9500 platform switches with an -EX or -FX type line card. For more information,see the "Configuring ACL TCAM Region Sizes" section in the Cisco Nexus 9000 Series NX-OS 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. 04-13-2020 04:24 PM. Cisco Nexus 3232C. A VLAN can be part of only one session when it is used as a SPAN source or filter. The documentation set for this product strives to use bias-free language. not to monitor the ports on which this flow is forwarded. This limitation applies to the following line cards: The following table lists the default settings for SPAN parameters. 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. SPAN session. This guideline does not apply for Cisco Nexus The configuration above will capture all traffic of VLAN 5 and send it to SPAN port fastethernet 0/5. ternary content addressable memory (TCAM) regions in the hardware. SPAN copies for multicast packets are made before rewrite. Cisco Nexus 9300 and 9500 platform switches support FEX ports as SPAN sources in the ingress direction for all traffic and SPAN source ports have the following characteristics: A port configured as a source port cannot also be configured as a destination port.
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