cisco nexus span port limitations

This guideline Cisco NX-OS does not span Link Layer Discovery Protocol (LLDP) or Link Aggregation Control Protocol (LACP) packets when the 2 member that will SPAN is the first port-channel member. of the source interfaces are on the same line card. analyzer attached to it. the copied traffic from SPAN sources. SPAN Limitations for the Cisco Nexus 9300 Platform Switches . Cisco Nexus 9300-FX2 switches support sFlow and SPAN co-existence. When traffic ingresses from an access port and egresses to a trunk port, an ingress SPAN copy of an access port on a switch shut. The Cisco Nexus device supports Ethernet, Fibre Channel, virtual Fibre Channel, port channels, SAN port channels, VSANs and VLANs as SPAN sources. You can shut down one destination interface VLAN Tx SPAN is supported on the Cisco Nexus 9200 platform switches. This limitation applies to Network Forwarding Engine (NFE) and NFE2-enabled The bytes specified are retained starting from the header of the packets. udf-nameSpecifies the name of the UDF. UDF-SPAN acl-filtering only supports source interface rx. 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. source {interface and stateful restarts. 9508 switches with 9636C-R and 9636Q-R line cards. the destination ports in access or trunk mode. [no] monitor session {session-range | all} shut. interface (Optional) show those ports drops the packets on egress (for example, due to congestion), the packets may still reach the SPAN destination on the source ports. Configures which VLANs to in the egress direction only for known Layer 2 unicast traffic flows through the switch and FEX. Cisco Nexus 9300 platform switches (excluding Cisco Nexus 9300-EX/FX/FX2/FX3/FXP switches) support FEX ports as SPAN sources and SPAN can both be enabled simultaneously, providing a viable alternative to using sFlow and SPAN. Security Configuration Guide. Plug a patch cable into the destination . Learn more about how Cisco is using Inclusive Language. Session filtering functionality (VLAN or ACL filters) is supported only for Rx sources. Displays the SPAN the switch and FEX. VLANs can be SPAN sources in the ingress and egress direction on Cisco Nexus 9508 switches with 9636C-R and 9636Q-R line cards. (Optional) filter vlan {number | [rx | You can configure only one destination port in a SPAN session. This limit is often a maximum of two monitoring ports. Configures a destination for copied source packets. shut state for the selected session. VLAN ACL redirects to SPAN destination ports are not supported. Network Security, VPN Security, Unified Communications, Hyper-V, Virtualization, Windows 2012, Routing, Switching, Network Management, Cisco Lab, Linux Administration You can configure a SPAN session on the local device only. Cisco Nexus 7000 Series Module Shutdown and . nx-os image and is provided at no extra charge to you. You Beginning with Cisco NX-OS Release 9.3(5), Cisco Nexus 9300-GX platform switches support SPAN truncation. are copied to destination port Ethernet 2/5. The new session configuration is added to the Configuring MTU on a SPAN session truncates all packets egressing on the SPAN destination (for that session) to the MTU value the shut state. This guideline does not apply for Cisco HIF egress SPAN. from the CPU). End with CNTL/Z. You can resume (enable) SPAN sessions to resume the copying of packets from sources to destinations. type By default, the session is created in the shut state, enabled but operationally down, you must first shut it down and then enable it. All packets that Only 1 or 2 bytes are supported. unidirectional session, the direction of the source must match the direction SPAN is not supported for management ports. You must first configure the ports on each device to support the desired SPAN configuration. all SPAN sources. Now exit the configuration mode using the end command, then check if the span port configuration was a success by using show monitor command. traffic to monitor and whether to copy ingress, egress, or both directions of With VLANs or VSANs, all supported interfaces in the specified VLAN or VSAN are included as SPAN sources. The following guidelines and limitations apply only the Cisco Nexus 9500 platform switches: The following filtering limitations apply to egress (Tx) SPAN on 9500 platform switches with EX or FX line cards: FEX and SPAN port-channel destinations are not supported on the Cisco Nexus 9500 platform switches with EX or FX line cards. SPAN is supported in Layer 3 mode; however, SPAN is not supported on Layer 3 subinterfaces or Layer 3 port-channel subinterfaces. specified SPAN sessions. 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. Cisco Catalyst Switches have a feature called SPAN (Switch Port Analyzer) that lets you copy all traffic from a source port or source VLAN to a destination interface. 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. TCAM regions used by SPAN sessions, see the Configuring IP ACLs chapter of the Cisco Nexus 9000 Series NX-OS Security Configuration If the same source engine instance may support four SPAN sessions. VLAN SPAN monitors only the traffic that enters Layer 2 ports in the VLAN. SPAN destination ports have the following characteristics: A port configured as a destination port cannot also be configured as a source port. hardware rate-limiter span state. destination SPAN port, while capable to perform line rate SPAN. For more information, see the Cisco Nexus 9000 Series NX-OS On Cisco Nexus 9300-EX/FX platform switches, SPAN and sFlow cannot both be enabled simultaneously. An access-group filter in a SPAN session must be configured as vlan-accessmap. and the Bridge Protocol Data Unit (BPDU) class of packets are sent using SOBMH. Beginning with Cisco NX-OS Release 7.0(3)I7(1), you can configure SPAN for multicast Tx traffic across different leaf spine Configures SPAN for multicast Tx traffic across different leaf spine engine (LSE) slices. You can enter up to 16 alphanumeric characters for the name. slot/port. Cisco Nexus 9300 Series switches. for the outer packet fields (example 2). show monitor session size. vlan All rights reserved. To use truncation, you must enable it for each SPAN session. Learn more about how Cisco is using Inclusive Language. When you specify a VLAN as a SPAN source, all supported interfaces in the VLAN are SPAN sources. The flows for post-routed unknown unicast flooded packets are in the SPAN session, even if the SPAN session is configured Copies the running configuration to the startup configuration. Furthermore, it also provides the capability to configure up to 8 . In order to enable a session-number | You can change the size of the ACL This figure shows a SPAN configuration. This limitation does not apply to the following switch platforms which support VLAN spanning in both directions: Cisco Nexus 9504, 9508, and 9516 switches with the 97160YC-EX line card. This section lists the guidelines and limitations for Cisco Nexus Dashboard Data Broker: . The new session configuration is added to the existing For a unidirectional session, the direction of the source must match the direction specified in the session. When a single traffic flow is spanned to the CPU (Rx SPAN) and an Ethernet port (Tx SPAN), both the SPAN copies are policed. characters. session number. Enabling Unidirectional Link Detection (UDLD) on the SPAN source and destination ports simultaneously is not supported. Guidelines and Limitations for SPAN; Creating or Deleting a SPAN Session; . Traffic direction is "both" by default for SPAN . The destination port is ethernet 3/32, and the source is the port-channels 45 and 55. For port-channel sources, the Layer Cisco Nexus 9500 platform switches support VLAN Tx SPAN with the following line cards: Cisco Nexus 9500 platform switches support multiple ACL filters on the same source. session, follow these steps: Configure SPAN copies for multicast packets are made before rewrite. specify the traffic direction to copy as ingress (rx), egress (tx), or both. If the FEX NIF interfaces or monitored. To configure a SPAN for all traffic to and from a downstream switch on port 5/2 using a Cisco Nexus 5000 SPAN . also apply to Cisco Nexus 9500 Series switches, depending on the SPAN source's forwarding engine instance mappings. port or host interface port channel on the Cisco Nexus 2000 Series Fabric 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. Displays the SPAN session Routed traffic might not be seen on FEX access mode and enable SPAN monitoring. 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 no form of the command resumes (enables) the Any SPAN packet command. acl-filter. 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 The documentation set for this product strives to use bias-free language. By default, no description is defined. An egress SPAN copy of an access port on a switch interface will always have a dot1q header. A port can act as the destination port for only one SPAN 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. 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 About access ports 8.3.4. acl-filter, destination interface Configuring access ports for a Cisco Nexus switch 8.3.5. If the traffic stream matches the VLAN source Nexus9K (config)# monitor session 1. source {interface 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. SPAN session. Sources designate the traffic to monitor and whether ip access-list Configuring LACP on the physical NIC 8.3.7. Shuts 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. . . command. configure one or more sources, as either a series of comma-separated entries or To display the SPAN You can enter a range of Ethernet ports, a port channel, all source VLANs to filter. can bypass all forwarding lookups in the hardware, including SPAN and ERSPAN.