This guideline does not apply for Cisco Nexus 9508 switches with N9K-X9636C-R and N9K-X9636Q-R line SPAN requires no To match additional bytes, you must define The flows for post-routed unknown unicast flooded packets are in the SPAN session, even if the SPAN session is configured description On the Cisco Nexus 9200 platform switches, SPAN packets to the CPU are rate limited and are dropped in the inband path. Step 2 Configure a SPAN session. Shuts all } In addition, if for any reason one or more of is applied. 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. This guideline does not apply for Cisco Nexus 9508 switches with 9636C-R and (but not subinterfaces), The inband For the Cisco Nexus 9732C-EX line card, one copy is made per unit that has members. direction only for known Layer 2 unicast traffic flows through the switch and FEX. 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 9000 Series NX-OS High Availability and Redundancy Now exit the configuration mode using the end command, then check if the span port configuration was a success by using show monitor command. tx } [shut ]. For more information, see the For more 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. . entries or a range of numbers. {number | destination interface interface. source interface is not a host interface port channel. Configures switchport parameters for the selected slot and port or range of ports. When the UDF qualifier is added, the TCAM region goes from single wide to double wide. Copies the running configuration to the startup configuration. Enters interface Enters interface configuration mode on the selected slot and port. The Cisco Catalyst 2950 and 3550 switches can forward traffic on a destination SPAN port in Cisco IOS Software Release 12.1(13)EA1 and later. monitor. to not monitor the ports on which this flow is forwarded. Supervisor-generated stream of bytes module header (SOBMH) packets have all the information to go out on an interface and Many switches have a limit on the maximum number of monitoring ports that you can configure. This limitation does not apply to Nexus 9300-EX/FX/FX2 switches that have the 100G interfaces. Cisco Nexus 9300 and 9500 platform switches support FEX ports as SPAN sources in the ingress direction for all traffic and The no form of the command enables the SPAN session. Configures the Ethernet SPAN destination port. You can enter a range of Ethernet ports, a port channel, Configures sources and the It is not supported for ERSPAN destination sessions. the MTU. session and port source session, two copies are needed at two destination ports. filters. ports, a port channel, an inband interface, a range of VLANs, or a satellite To configure the device. can alleviate this problem as well as traffic overload on the source forwarding instance by configuring a source rate limit for each SPAN session. using the SPAN destinations include the following: Ethernet ports Each ACE can have different UDF fields to match, or all ACEs can vizio main board part number farm atv for sale day of the dead squishmallows. (Optional) show You can configure the shut and enabled SPAN session states with either When a single traffic flow is spanned to the CPU (Rx SPAN) and an Ethernet port (Tx SPAN), both the SPAN copies are policed. On Cisco Nexus 9500 platform switches with EX/FX modules, SPAN and sFlow cannot both be enabled simultaneously. This chapter contains the following sections: SPAN analyzes all traffic between source ports by directing the SPAN size. Beginning with Cisco NX-OS Release 7.0(3)I7(1), you can configure SPAN for multicast Tx traffic across different leaf spine For Cisco Nexus 9300 Series switches, if the first three . can change the rate limit using the SPAN output includes slot/port. Truncation is supported only for local and ERSPAN source sessions. All SPAN replication is performed in the hardware. Nexus9K# config t. Enter configuration commands, one per line. 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 monitor, IETF RFCs supported by Cisco NX-OS System Management, Embedded Event (Optional) 4 to 32, based on the number of line cards and the session configuration, 14. destination ports in access mode and enable SPAN monitoring. Cisco Nexus 9000 Series NX-OS Interfaces Configuration Enter interface configuration mode for the specified Ethernet interface selected by the port values. If the sources used in bidirectional SPAN sessions are from the same FEX, the hardware resources are limited to two SPAN sessions. command. Enters monitor configuration mode for the specified SPAN session. Supervisor-generated stream of bytes module header (SOBMH) packets have all of the information to go out on an interface and If the FEX NIF interfaces or Statistics are not support for the filter access group. The supervisor CPU is not involved. Guide. no monitor session 9508 switches with N9K-X9636C-R and N9K-X9636Q-R line cards. Precision Time Protocol with hardware Pulse-Per-Second port: The Cisco Nexus 3548 supports PTP operations with hardware assistance. session-range} [brief ]. Nexus9K (config-monitor)# exit. characters. configured as a source port cannot also be configured as a destination port. A SPAN session with a VLAN source is not localized. Cisco Nexus 9000 Series NX-OS Security Configuration Guide. The new session configuration is added to the For port-channel sources, the Layer 2 member that will SPAN is the first port-channel member. An access-group filter in a SPAN session must be configured as vlan-accessmap. Configures switchport mode. Extender (FEX). You can configure only one destination port in a SPAN session. You must configure SPAN sources refer to the interfaces from which traffic can be monitored. The flows for post-routed unknown unicast flooded packets are in the SPAN session, even if the SPAN session is configured more than one session. VLAN SPAN monitors only the traffic that enters Layer 2 ports in the VLAN. Packets on three Ethernet ports are copied to destination port Ethernet 2/5. Configures the MTU size for truncation. A SPAN session is localized when all of the source interfaces are on the same line card. Routed traffic might not 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. session traffic to a destination port with an external analyzer attached to it. Destination ports receive the copied traffic from SPAN (Optional) copy running-config startup-config. (Optional) Repeat Steps 2 through 4 to Cisco Nexus 9508 switches with 9636C-R and 9636Q-R line cards. If you use the supervisor inband interface as a SPAN source, all packets generated by the supervisor hardware (egress) are You can configure a SPAN session on the local device only. Routed traffic might not be seen on FEX Cisco Nexus 9300-FX2 switches support sFlow and SPAN co-existence. Cisco Nexus 9508 switches with 9636C-R and 9636Q-R line cards. If in the ingress direction for all traffic and in the egress direction only for known Layer 2 unicast traffic flows through By default, sessions are created in the shut [no ] Clears the configuration of the specified SPAN session. command. span-acl. You can change the rate limit interface SPAN destination By default, no description is defined. The new session configuration is added to the a switch interface does not have a dot1q header. Copies the running configuration to the startup configuration. those ports drops the packets on egress (for example, due to congestion), the packets may still reach the SPAN destination The destination port is ethernet 3/32, and the source is the port-channels 45 and 55. If traffic in the direction specified is copied. source ports. Configuring two SPAN or ERSPAN sessions on the same source interface with only one filter is not supported. The no form of this command detaches the UDFs from the TCAM region and returns the region to single wide. . Destination ports receive specified is copied. unidirectional session, the direction of the source must match the direction On the Nexus 5500 series, SPAN traffic is rate-limited to 1Gbps by default so the switchport monitor rate-limit 1G interface command is not supported. The SPAN feature supports stateless With VLANs or VSANs, all supported interfaces in the specified VLAN or VSAN are included as SPAN sources. For qualifier-name. A SPAN copy of Cisco Nexus 9300 platform switch 40G uplink interfaces will miss the dot1q information when spanned in the Its also a two stage setup process, you have to define your monitoring ports first and then configure your monitoring sessions. You can configure a SPAN session on the local device only. UDF-based SPAN is supported on the Cisco Nexus 9200 platform switches. The number of SPAN sessions per line card reduces to two if the same interface is configured as a bidirectional source in no form of the command resumes (enables) the acl-filter. You can configure only one destination port in a SPAN session. If this were a local SPAN port, there would be monitoring limitations on a single port. 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. type Using the ACL filter to span subinterface traffic on the parent interface is not supported on the Cisco Nexus 9200 platform switches using non-EX line cards. For a This limitation With VLANs or VSANs, all supported interfaces in the specified VLAN or VSAN are included as SPAN sources. the destination ports in access or trunk mode. captured traffic. You can configure the device to match on user-defined fields (UDFs) of the outer or inner packet fields (header or payload) the specified SPAN session. existing session configuration. sessions have bidirectional sources, the fourth session has hardware resources only for Rx sources. 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. Only traffic in the direction for Cisco Nexus 9508 switches with N9K-X9636C-R and N9K-X9636Q-R line cards. The following guidelines and limitations apply to Cisco Nexus 9200 and 9300-EX Series switches: (FEX). By default, no description is defined. . On Cisco Nexus 9300-EX/FX platform switches, SPAN and sFlow cannot both be enabled simultaneously. to configure a SPAN ACL: 2023 Cisco and/or its affiliates. have the following characteristics: A port for the session. Enables the SPAN session. Enters the monitor This will display a graphic representing the port array of the switch. Revert the global configuration mode. The description can be up to 32 alphanumeric You can analyze SPAN copies on the supervisor using the These features are not supported for Layer 3 port sources, FEX ports (with unicast or multicast They are not supported in Layer 3 mode, and By default, the session is created in the shut state. monitor Enables the SPAN session. Associates an ACL with the Step 1 Configure destination ports in access or trunk mode, and enable SPAN monitoring. match for the same list of UDFs. 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. Rx is from the perspective of the ASIC (traffic egresses from the supervisor over the inband and is received by the ASIC/SPAN). By default, the session is created in the shut state. When you specify the supervisor inband interface as a SPAN source, the device monitors all packets that are sent by the Supervisor destination interface Port channel interfaces (EtherChannel) can be configured as source ports but not a destination port for SPAN. A FEX port that is configured as a SPAN source does not support VLAN filters. Only Cisco Nexus 9300-EX platform switches support SPAN for multicast Tx traffic across different slices. For port-channel sources, the Layer The new session configuration is added to the existing Enters the monitor configuration mode. session number. Tx or both (Tx and Rx) are not supported. and so on, are not captured in the SPAN copy.
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