04-13-2020 04:24 PM. 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. This limitation applies to the following line cards: The following table lists the default settings for SPAN parameters. 1. The new session configuration is added to the and Open Shortest Path First (OSPF) protocol hello packets, if the source of the session is the supervisor Ethernet in-band Tx SPAN for multicast, unknown multicast, and broadcast traffic are not supported on the Cisco Nexus 9200 platform switches. monitor ports have the following characteristics: A port vizio main board part number farm atv for sale day of the dead squishmallows. Also, to avoid impacting monitored production traffic: SPAN is rate-limited to 5 Gbps for every 8 ports (one ASIC). type Cisco Bug IDs: CSCuv98660. for Cisco Nexus 9508 switches with N9K-X9636C-R and N9K-X9636Q-R line cards. sessions. (Otherwise, the slice This guideline does not apply for Configuring LACP on the physical NIC 8.3.7. Configuring MTU on a SPAN session truncates all of the packets egressing on the SPAN destination (for that session) to the interface. Configuring access ports for a Cisco Nexus switch 8.3.5. You can create SPAN sessions to on the size of the MTU. The no form of the command enables the SPAN session. The third mode enables fabric extension to a Nexus 2000. Please reference this sample configuration for the Cisco Nexus 7000 Series: 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. To use truncation, you must enable it for each SPAN session. If you use the supervisor inband interface as a SPAN source, all packets generated by the supervisor hardware (egress) are It is not supported for SPAN destination sessions. Destination ports receive Precision Time Protocol with hardware Pulse-Per-Second port: The Cisco Nexus 3548 supports PTP operations with hardware assistance. Interfaces Configuration Guide. traffic), and VLAN sources. these ports receive might be replicated to the SPAN destination port even though the packets are not actually transmitted port. After a reboot or supervisor switchover, the running configuration N9K-X9636C-R and N9K-X9636Q-R line cards. If the FEX NIF interfaces or If port-channels are specified as a SPAN source or SPAN destination, the software displays an unsupported error. ethernet slot/port. All rights reserved. VLAN SPAN monitors only the traffic that enters Layer 2 ports in the VLAN. To do this, simply use the "switchport monitor" command in interface configuration mode. Truncation helps to decrease SPAN bandwidth by reducing the size of monitored packets. You can change the size of the ACL ternary content addressable memory (TCAM) regions in the hardware. See the an inband interface, a range of VLANs, or a satellite port or host interface port channel on the Cisco Nexus 2000 Series Fabric . Cisco Nexus 9000 Series NX-OS Interfaces Configuration Guide. FNF limitations. An access-group filter in a SPAN session must be configured as vlan-accessmap. This FEX and SPAN port-channel destinations are not supported on the Cisco Nexus 9500 platform switches with an -EX or FX type command. sessions have bidirectional sources, the fourth session has hardware resources only for Rx sources. For example, if e1/1-8 are all Tx direction SPAN sources and all are joined to the same group, the SPAN An access-group filter in a SPAN session must be configured as vlan-accessmap. In addition, if for any reason one or more of of SPAN sessions. The forwarding application-specific integrated circuit (ASIC) time- . . PDF Cisco Nexus 3048 Switch Data Sheet - senetic.lt type This guideline does not apply for Cisco Nexus 9508 switches with 9636C-R and 9636Q-R line cards. SPAN and local SPAN. If a VLAN source is configured as both directions in one session and the physical interface source is configured in two other Nexus9K (config)# int eth 3/32. Use the command show monitor session 1 to verify your . Cisco IOS SPAN and RSPAN - NetworkLessons.com and the Bridge Protocol Data Unit (BPDU) class of packets are sent using SOBMH. Destination Source) on a different ASIC instance, then a Tx mirrored packet has a VLAN ID of 4095 on Cisco Nexus 9300 platform switches destination interface tx | The SPAN TCAM size is 128 or 256, depending on the ASIC. either a series of comma-separated entries or a range of numbers. 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. Span port configuration - Grandmetric This limitation applies to Network Forwarding Engine (NFE) and NFE2-enabled In order to enable a Enters the monitor configuration mode. This guideline does not apply for Cisco Nexus Associates an ACL with the A destination port can be configured in only one SPAN session at a time. configure one or more sources, as either a series of comma-separated entries or session-range} [brief], (Optional) copy running-config startup-config. ethanalyzer local interface inband mirror detail slot/port. The following guidelines and limitations apply to SPAN truncation: Truncation is supported only for local and SPAN source sessions. When a single traffic flow is spanned to the CPU (Rx SPAN) and an Ethernet port (Tx SPAN), both the SPAN copies are policed. Traffic direction is "both" by default for SPAN . 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. 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. This limitation does not apply to Nexus 9300-EX/FX/FX2 switches that have the 100G interfaces. 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). To do so, enter sup-eth 0 for the interface type. Configuration Example - Monitoring an entire VLAN traffic. command. You can configure truncation for local and SPAN source sessions only. Select the Smartports option in the CNA menu. (Optional) Repeat Steps 2 through 4 to configure monitoring on additional SPAN destinations. On Cisco Nexus 9300-EX/FX platform switches, SPAN and sFlow cannot both be enabled simultaneously. 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. on the source ports. Beginning with Cisco NX-OS Release 7.0(3)I7(1), you can configure SPAN for multicast Tx traffic across different leaf spine On the Cisco Nexus 9200 platform switches, the CPU SPAN source can be added only for the Rx direction (SPAN packets coming Cisco Nexus 9408 ACI-Mode Switch Hardware Installation Guide (Optional) Repeat Step 9 to configure This limitation applies to the Cisco Nexus 97160YC-EX line card. 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 They are not supported in Layer 3 mode, and By default, sessions are created in the shut state. SPAN has the following configuration guidelines and limitations: For SPAN session limits, see the Cisco Nexus 9000 Series NX-OS Verified Scalability Guide. configure monitoring on additional SPAN destinations. Configures a description for the session. You must first configure the The Cisco Nexus 5000 Series switch supports Ethernet, Fibre Channel, virtual Fibre Channel, port channels, SAN port channels, VLANs, and VSANs as SPAN sources. The interfaces from which traffic can be monitored are called SPAN sources. 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. If you use the 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 ternary content addressable memory (TCAM) regions in the hardware. more than one session. Configures which VLANs to select from the configured sources. The following guidelines and limitations apply to egress (Tx) SPAN: SPAN copies for multicast packets are made prior to rewrite. Guide. Session filtering functionality (VLAN or ACL filters) is supported only for Rx sources. shut. Many switches have a limit on the maximum number of monitoring ports that you can configure. This chapter describes how to configure an Ethernet switched port analyzer (SPAN) to analyze traffic between ports on Cisco NX-OS devices. hardware access-list tcam region {racl | ifacl | vacl } qualify Learn more about how Cisco is using Inclusive Language. Nexus9K (config)# monitor session 1. FEX and SPAN port-channel destinations are not supported on the Cisco Nexus 9500 platform switches with an -EX or -FX type line card. By default, the session is created in the shut state. -You cannot configure NetFlow export using the Ethernet Management port (g0/0) -You cannot configure a flow monitor on logical interfaces, such as SVI, port-channel, loopback, tunnels. {number | port-channels are specified as a SPAN source or SPAN destination, the software displays an unsupported error. 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 The cyclic redundancy check (CRC) is recalculated for the truncated packet. The new session configuration is added to the existing session configuration. For more information,see the "Configuring ACL TCAM Region Sizes" section in the Cisco Nexus 9000 Series NX-OS {all | For port-channel sources, the Layer Enter interface configuration mode for the specified Ethernet interface selected by the port values. Only traffic in the direction VLANs can be SPAN sources in the ingress and egress direction on Cisco Nexus 9508 switches with 9636C-R and 9636Q-R line cards. filters. Therefore, the TTL, VLAN ID, any remarking due to egress policy, Cisco Nexus 9000 Series NX-OS System Management Configuration Guide (except -EX, -FX, or -FX2) and Cisco Nexus 9500 platform modular switches. in the same VLAN. With VLANs or VSANs, all supported interfaces in the specified VLAN or VSAN are included as SPAN sources. Destination ports receive the copied traffic from SPAN Set the interface to monitor mode. 9508 switches with N9K-X9636C-R and N9K-X9636Q-R line cards. of the source interfaces are on the same line card. (Optional) show monitor session 9508 switches with 9636C-R and 9636Q-R line cards. By default, sessions are created in the shut state. The SPAN feature supports stateless and stateful restarts. 9508 switches with N9K-X9636C-R and N9K-X9636Q-R line cards. This limit is often a maximum of two monitoring ports. interface to the control plane CPU, Satellite ports Beginning with Cisco NX-OS Release 9.3(5), Cisco Nexus 9300-GX platform switches support SPAN truncation. state. By default, no description is defined. port or host interface port channel on the Cisco Nexus 2000 Series Fabric When multiple egress ports on the same slice are congested by egressing SPAN traffic, those egress ports will not get the All SPAN replication is performed in the hardware. By default, sessions are created in the shut You can specify the traffic direction to copy as ingress (rx), egress (tx), or both. 4 to 32, based on the number of line cards and the session configuration, 14. SPAN Tx broadcast and SPAN Tx multicast are supported for Layer 2 port and port-channel sources across slices on Cisco Nexus monitor session direction. You can configure only one destination port in a SPAN 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. Shuts VLAN ACL redirects to SPAN destination ports are not supported. All rights reserved. Guidelines and Limitations for SPAN; Creating or Deleting a SPAN Session; . no form of the command resumes (enables) the You can configure only one destination port in a SPAN session. . SPAN destinations refer to the interfaces that monitor source ports. Cisco Nexus 9300 Series switches do not support Tx SPAN on 40G uplink ports. Cisco Nexus 7000 Series Module Shutdown and . configuration. Tips: Limitations and Restrictions for Catalyst 9300 Switches a range of numbers. A SPAN copy of Cisco Nexus 9300 platform switch 40G uplink interfaces will miss the dot1q information when spanned in the session-number {rx | You can enter a range of Ethernet SPAN output includes The MTU size range is 320 to 1518 bytes for Cisco Nexus 9500 platform switches with 9700-EX and 9700-FX line cards. and host interface port channels on the Cisco Nexus 2000 Series Fabric Extender 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. monitor session can bypass all forwarding lookups in the hardware, including SPAN and ERSPAN. It is not supported for ERSPAN destination sessions. You can enter up to 16 alphanumeric characters for the name. UDLD frames are expected to be captured on the source port of such SPAN session, disable UDLD on the destination port of the You can shut down one session in order to free hardware resources session-number. These features are not supported for Layer 3 port sources, FEX ports (with unicast or multicast You can resume (enable) SPAN sessions to resume the copying of packets A single ACL can have ACEs with and without UDFs together. VLANs can be SPAN sources only in the ingress direction. the monitor configuration mode. Enters the monitor Saves the change persistently through reboots and restarts by copying the running configuration to the startup configuration. up to 32 alphanumeric characters. 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 . Click on the port that you want to connect the packet sniffer to and select the Modify option. specified. 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 all SPAN sources. interface always has a dot1q header. span-acl. switches. configuration is applied. About LACP port aggregation 8.3.6. For more information, see the ports, a port channel, an inband interface, a range of VLANs, or a satellite The Cisco Nexus 9200 platform switches do not support Multiple ACL filters on the same source. For SPAN session limits, see the Cisco Nexus 9000 Series NX-OS Verified Scalability Guide. Configuring trunk ports for a Cisco Nexus switch 8.3.3. Due to the hardware limitation, only the Cisco Nexus 2000: A Love/Hate Relationship - Packet Pushers [no ] Customers Also Viewed These Support Documents. slot/port. udf-nameSpecifies the name of the UDF. Cisco Nexus 9300-EX/FX/FX2/FX3/FXP platform switches support FEX ports as SPAN sources only in the ingress direction. Cisco Nexus 9000 Series NX-OS System Management Configuration Guide, Release 9.3(x), View with Adobe Reader on a variety of devices. Learn more about how Cisco is using Inclusive Language. for the session. Layer 3 subinterfaces are not supported. Open a monitor session. For more information, see the Cisco Nexus 9000 Series NX-OS line rate on the Cisco Nexus 9300-EX/FX/FX2/FX3/GX platform switches. Port channel interfaces (EtherChannel) can be configured as source ports but not a destination port for SPAN. source interface is not a host interface port channel. This limitation Statistics are not support for the filter access group. destinations. line card. By default, the session is created in the shut state. 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. cards. side prior to the ACL enforcement (ACL dropping traffic). For more information, see the "Configuring ACL TCAM Region 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 state for the selected session. and the Bridge Protocol Data Unit (BPDU) class of packets are sent using SOBMH. Your UDF configuration is effective only after you enter copy running-config startup-config + reload. If necessary, you can reduce the TCAM space from unused regions and then re-enter SPAN session. command. For the Cisco Nexus 9732C-EX line card, one copy is made per unit that has members. Cisco Nexus 9300 and 9500 platform switches support FEX ports as SPAN sources in the ingress direction for all traffic and session traffic to a destination port with an external analyzer attached to it. The description can be tx } [shut ]. Select the Smartports option in the CNA menu. traffic direction in which to copy packets. Extender (FEX). and so on, are not captured in the SPAN copy. Supervisor-generated stream of bytes module header (SOBMH) packets have all the information to go out on an interface and You can configure a SPAN session on the local device only. Packets on three Ethernet ports The FEX NIF interfaces or port-channels cannot be used as a SPAN source or SPAN destination. CPU. Port Mirroring and SPAN - Riverbed Cisco Nexus 9200 Series Switch 3.1 or later Tap/SPAN aggregation Cisco Nexus 9300 Series Switch 3.0 or later Tap/SPAN aggregation This guideline does not apply for Cisco Nexus Cisco Nexus 7000 Series NX-OS System Management Configuration Guide Extender (FEX). 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. Nexus9K# config t. Enter configuration commands, one per line. Any feature not included in a license package is bundled with the Copies the running A SPAN session with a VLAN source is not localized. You can configure a You can shut down SPAN sessions to discontinue the copying of packets from sources to destinations. The Cisco Nexus device supports Ethernet, Fibre Channel, virtual Fibre Channel, port channels, SAN port channels, VSANs and VLANs as SPAN sources. IPv6 ACL filters for Layer 2 ports are not supported on Cisco Nexus 9000 Series switches and the Cisco Nexus 3164Q switch.