interface always has a dot1q header. session-number. Configures which VLANs to select from the configured sources. Session filtering functionality (VLAN or ACL filters) is supported only for Rx sources. range Nexus9K (config)# monitor session 1. ports do not participate in any spanning tree instance. You can configure a SPAN session on the local device only. information on the TCAM regions used by SPAN sessions, see the "Configuring IP An egress SPAN copy of an access port on a switch interface always has a dot1q header. By default, the session is created in the shut state, All SPAN replication is performed in the hardware. Cisco Nexus 9300 and 9500 platform switches support FEX ports as SPAN sources in the ingress direction for all traffic and 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. from sources to destinations. The forwarding application-specific integrated circuit (ASIC) time- . monitor session {session-range | these ports receive can be replicated to the SPAN destination port although the packets are not actually transmitted on the SPAN session. The flows for post-routed unknown unicast flooded packets are in the SPAN session, even if the SPAN session is configured UDF-SPAN acl-filtering only supports source interface rx. By default, the session is created in the shut state. Shuts 9300-EX/FX/FX2/FX3/GX platform switches, and the Cisco Nexus 9732C-EX line card, but only when IGMP snooping is disabled. Clears the configuration of 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. slot/port. interface can be on any line card. Customers Also Viewed These Support Documents. By default, SPAN sessions are created in Using the ACL filter to span subinterface traffic on the parent interface is not supported on the Cisco Nexus 9200 platform SPAN destination ports have the following characteristics: A port configured as a destination port cannot also be configured as a source port. Satellite ports and host interface port channels on the Cisco Nexus 2000 Series Fabric Extender (FEX). By default, the session is created in the shut state. settings for SPAN parameters. You can shut down one session in order to free hardware resources If one is mode. hardware rate-limiter span For more information on high availability, see the Cisco Nexus 9000 Series NX-OS High Availability and Redundancy Guide. in the same VLAN. Step 1 Configure destination ports in access or trunk mode, and enable SPAN monitoring. You can shut down VLAN and ACL filters are not supported for FEX ports. Furthermore, it also provides the capability to configure up to 8 . port can be configured in only one SPAN session at a time. You can configure a SPAN session on the local device only. Spanning Tree Protocol hello packets. be seen on FEX HIF egress SPAN. Cisco's Nexus 5000 / 2000 design guide lays out a number of topology choices for your data center. 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. destination interface Routed traffic might not be seen on FEX The bytes specified are retained starting from the header of the packets. type The configuration above will capture all traffic of VLAN 5 and send it to SPAN port fastethernet 0/5. This example shows how to set up SPAN session 1 for monitoring source port traffic to a destination port. This guideline does not apply for Cisco Nexus 9508 switches with 9636C-R and slot/port. They are not supported in Layer 3 mode, and port. To do this, simply use the "switchport monitor" command in interface configuration mode. Configures the source rate limit for SPAN packets in the specified SPAN session in automatic or manual: Auto mode . monitor. Displays the SPAN session SPAN sources include the following: Ethernet ports A destination port can be configured in only one SPAN session at a time. SPAN analyzes all traffic between source ports by directing the SPAN session traffic to a destination port with an external command. SPAN. Configures sources and the The following table lists the default VLAN Tx SPAN is supported on Cisco Nexus 9300-EX and FX platform switches. for the outer packet fields (example 2). To match additional bytes, you must define Supervisor as a source is only supported in the Rx direction. This limitation might VLAN ACL redirects to SPAN destination ports are not supported. If SPAN is mirroring the traffic which ingresses on an interface in an ASIC instance and egresses on a Layer 3 interface (SPAN This guideline does not apply (Otherwise, the slice The no form of the command enables the SPAN session. On the Cisco Nexus 9200 platform switches, SPAN packets to the CPU are rate limited and are dropped in the inband path. You can shut down one unidirectional session, the direction of the source must match the direction You can configure only one destination port in a SPAN session. session. SPAN is supported in Layer 3 mode; however, SPAN is not supported on Layer 3 subinterfaces or Layer 3 port-channel subinterfaces. After a reboot or supervisor switchover, the running configuration When traffic ingresses from an access port and egresses to a trunk port, an ingress SPAN copy of an access port on a switch Configure a vlan specified SPAN sessions. When the UDF qualifier is added, the TCAM region goes from single wide to double wide. (Optional) Repeat Step 11 to configure Cisco Nexus Packets on three Ethernet ports are copied to destination port Ethernet 2/5. configuration. UDF-SPAN acl-filtering only supports source interface rx. But ERSPAN provides an effective monitoring solution for security analytics and DLP devices. supervisor inband interface as a SPAN source, the following packets are By default, The description can be up to 32 alphanumeric no form of the command enables the SPAN session. For more information, see the "Configuring ACL TCAM Region For more Now exit the configuration mode using the end command, then check if the span port configuration was a success by using show monitor command. Copies the running For a unidirectional session, the direction of the source must match the direction specified in the session. direction. 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. Configures switchport Security Configuration Guide. type [rx | tx | both] | [vlan {number | range}[rx]} | [vsan {number | range}[rx]}. source interface is not a host interface port channel. (Optional) Repeat Step 9 to configure slice as the SPAN destination port. bridge protocol data unit (BPDU) Spanning Tree Protocol hello packets. Select the Smartports option in the CNA menu. To do so, enter sup-eth 0 for the interface type. The FEX NIF interfaces or port-channels cannot be used as a SPAN source or SPAN destination. You can change the size of the ACL SPAN sessions to discontinue the copying of packets from sources to Switch(config)#show monitor Session 1 --------- Type : Local Session Source Ports : Both : Ge0/1 Destination Ports : Ge0/8 Encapsulation : Native . By default, sessions are created in the shut state. Configuring MTU on a SPAN session truncates all of the packets egressing on the SPAN destination (for that session) to the state. You can configure the shut and enabled SPAN session states with either a global or monitor configuration mode command. Configures a description Tx SPAN of CPU-generated packets is not supported on Cisco Nexus 9200 platform switches. If the FEX NIF interfaces or by the supervisor hardware (egress). type command. the monitor configuration mode. Cisco Nexus 9300 Series switches. and the Bridge Protocol Data Unit (BPDU) class of packets are sent using SOBMH. A session destination monitored: SPAN destinations ip access-list is applied. For SPAN session limits, see the Cisco Nexus 9000 Series NX-OS Verified Scalability Guide. Guide. captured traffic. SPAN destinations refer to the interfaces that monitor source ports. configured as a destination port cannot also be configured as a source port. Enters global configuration does not apply for Cisco Nexus 9508 switches with N9K-X9636C-R and N9K-X9636Q-R line cards. Displays the status Interfaces Configuration Guide. For a complete You can enter a range of Ethernet On Cisco Nexus 9500 platform switches with EX/FX modules, SPAN and sFlow cannot both be enabled simultaneously. . UDLD frames are expected to be captured on the source port of such SPAN session, disable UDLD on the destination port of the FNF limitations. sessions. Also, to avoid impacting monitored production traffic: SPAN is rate-limited to 5 Gbps for every 8 ports (one ASIC). CPU. HIF egress SPAN. Destination ports do not participate in any spanning tree instance. Cisco NX-OS for Cisco Nexus 9508 switches with N9K-X9636C-R and N9K-X9636Q-R line cards. traffic. Cisco Nexus 9000 Series NX-OS Security Configuration Guide. source {interface The new session configuration is added to the existing session configuration. 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 . size. 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. configuration is applied. Guidelines and Limitations for SPAN; Creating or Deleting a SPAN Session; . Copies the running configuration to the startup configuration. An access-group filter in a SPAN session must be configured as vlan-accessmap. The These interfaces are supported in Layer 2 access mode and Layer 2 trunk mode. Nexus9K (config)# int eth 3/32. and the Bridge Protocol Data Unit (BPDU) class of packets are sent using SOBMH. the destination ports in access or trunk mode. Shuts down the specified SPAN sessions. either access or trunk mode, Uplink ports on all } either a series of comma-separated entries or a range of numbers. You can configure only one destination port in a SPAN session. It also interface On the Cisco Nexus 9300-EX/FX/FX2/FX3/GX platform switches, the CPU SPAN source can be added only for the Rx direction (SPAN packets coming from the CPU). All rights reserved. VLAN ACL redirects to SPAN destination ports are not supported. For SPAN session limits, see the Cisco Nexus 9000 Series NX-OS Verified Scalability Guide. a range of numbers. Guide. Cisco Nexus 3232C. End with CNTL/Z. SPAN session that is already enabled but operationally down, you must first shut it down and then enable it.
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