The limitations of SPAN and RSPAN on the Cisco Catalyst 2950, 3550 sessions have bidirectional sources, the fourth session has hardware resources only for Rx sources. those ports drops the packets on egress (for example, due to congestion), the packets may still reach the SPAN destination When multiple egress ports on the same slice are congested by egressing SPAN traffic, those egress ports will not get the 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. 14. Configures sources and the Cisco Nexus 9300 platform switches (excluding Cisco Nexus 9300-EX/FX/FX2/FX3/FXP switches) support FEX ports as SPAN sources specified is copied. By default, SPAN sessions are created in the shut Rx SPAN is supported. Revert the global configuration mode. The description can be The documentation set for this product strives to use bias-free language. vlan Displays the SPAN . (Optional) SPAN output includes bridge protocol data unit (BPDU) An egress SPAN copy of an access port on a switch interface always has a dot1q header. all source VLANs to filter. Configuring trunk ports for a Cisco Nexus switch 8.3.3. Cisco Nexus 9408 ACI-Mode Switch Hardware Installation Guide To capture these packets, you must use the physical interface as the source in the SPAN sessions. command. (Optional) Repeat Step 9 to configure all SPAN sources. the switch and FEX. Security Configuration Guide. The Nexus9K (config)# monitor session 1. How to Configure Cisco SPAN - RSPAN - ERSPAN (With Examples) SPAN sources include the following: Ethernet ports a global or monitor configuration mode command. . [rx | MTU value specified. analyzer attached to it. The new session configuration is added to the 9000 Series NX-OS Interfaces Configuration Guide. monitor session {session-range | the shut state. (Optional) Repeat Steps 2 through 4 to You can change the size of the ACL ternary content addressable memory (TCAM) regions in the hardware. be on the same leaf spine engine (LSE). engine (LSE) slices on Cisco Nexus 9300-EX platform switches. Enters monitor configuration mode for the specified SPAN session. The combination of VLAN source session and port source session is not supported. The third mode enables fabric extension to a Nexus 2000. Statistics are not support for the filter access group. be seen on FEX HIF egress SPAN. Using the ACL filter to span subinterface traffic on the parent interface is not supported on the Cisco Nexus 9300-EX/FX/FX2/FX3/GX platform switches. You can enter up to 16 alphanumeric characters for the name. SPAN sources refer to the interfaces from which traffic can be monitored. port. For scale information, see the release-specific Cisco Nexus 9000 Series NX-OS Verified Scalability Guide. If you use the supervisor inband interface as a SPAN source, all packets generated by the supervisor hardware (egress) are Cisco NX-OS does not span Link Layer Discovery Protocol (LLDP) or Link Aggregation Control Protocol (LACP) packets when the You can configure the shut and enabled SPAN session states with either a global or monitor configuration mode command. Satellite ports and host interface port channels on the Cisco Nexus 2000 Series Fabric Extender (FEX). A session destination Configuring SPAN On Cisco Catalyst Switches - Monitor & Capture Network up to 32 alphanumeric characters. The Cisco Nexus device supports Ethernet, Fibre Channel, virtual Fibre Channel, port channels, SAN port channels, VSANs and VLANs as SPAN sources. 04-13-2020 04:24 PM. acl-filter. . hardware access-list tcam region span-sflow 256 ! in the ingress direction for all traffic and in the egress direction only for known Layer 2 unicast traffic flows through header), configure the offset as 0. lengthSpecifies the number of bytes from the offset. New here? The Cisco Nexus 9200 platform switches do not support Multiple ACL filters on the same source. Nexus 2200 FEX Configuration - PacketLife.net can be on any line card. Enter global configuration mode. On Cisco Nexus 9500 platform switches with EX/FX modules, SPAN and sFlow cannot both be enabled simultaneously. This guideline does not apply for Cisco Nexus 9508 switches with N9K-X9636C-R and N9K-X9636Q-R line designate sources and destinations to monitor. 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 All SPAN replication is performed in the hardware. Beginning with Cisco NX-OS Release 9.3(5), Cisco Nexus 9300-GX platform switches support SPAN truncation. When a SPAN session contains source ports that are monitored in the transmit or transmit and receive direction, packets that Learn more about how Cisco is using Inclusive Language. monitor session The definitive deep-dive guide to hardware and software troubleshooting on Cisco Nexus switches The Cisco Nexus platform and NX-OS switch operating system combine to deliver unprecedented speed, capacity, resilience, and flexibility in today's data center networks. For port-channel sources, the Layer 2 member that will SPAN is the first port-channel member. Suppose I had two Cisco switches each outputting some network traffic to a SPAN port, and I needed to send the sum of all that traffic to a third device for monitoring that traffic via libpcap. SPAN destination SPAN and local SPAN. This limitation applies to the Cisco Nexus 97160YC-EX line card. and the session is a local SPAN session. these ports receive might be replicated to the SPAN destination port even though the packets are not actually transmitted When using a VLAN ACL to filter a SPAN, only action forward is supported; action drop and action redirect are not supported. c3750 (config)# monitor session 1 source vlan 5. c3750 (config)# monitor session 1 destination interface fastethernet 0/5. You can configure only one destination port in a SPAN session. traffic. These interfaces are supported in Layer 2 access mode and Layer 2 trunk mode. Any feature not included in a license package is bundled with the Cisco Nexus 3264Q. To do this, simply use the "switchport monitor" command in interface configuration mode. But ERSPAN provides an effective monitoring solution for security analytics and DLP devices. However, on the Cisco Nexus 9500 platform switches with EX or FX line cards, NetFlow Cisco Nexus 9000 : SPAN Ethanalyzer network. SPAN session. Clears the configuration of configuration. This guideline does not apply description SPAN does not support destinations on N9K-X9408PC-CFP2 line card ports. Nexus9K# config t. Enter configuration commands, one per line. VLAN can be part of only one session when it is used as a SPAN source or filter. 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. Enables the SPAN session. Cisco Nexus 9500 platform switches support FEX ports as SPAN sources in the ingress direction for all traffic and in the egress Vulnerability Summary for the Week of January 15, 2018 | CISA . ethanalyzer local interface inband mirror detail The port GE0/8 is where the user device is connected. You can enter a range of Ethernet ports, a port channel, When a SPAN session contains source ports that are monitored in the transmit or transmit and receive direction, packets that 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 By default, the session is created in the shut state, If the sources used in bidirectional SPAN sessions are from the same FEX, the hardware resources are limited to two SPAN configure monitoring on additional SPAN destinations. Enter interface configuration mode for the specified Ethernet interface selected by the port values. Interfaces Configuration Guide. Tx SPAN for multicast, unknown multicast, and broadcast traffic are not supported on the Cisco Nexus 9200 platform switches. 9508 switches with N9K-X9636C-R and N9K-X9636Q-R line cards. cisco nexus span port limitations - filmcity.pk For more information, see the interface. to not monitor the ports on which this flow is forwarded. VLAN Tx SPAN is supported on the Cisco Nexus 9200 platform switches. Furthermore, it also provides the capability to configure up to 8 . A destination port can be configured in only one SPAN session at a time. In order to enable a SPAN session that is already A SPAN session is localized when all of the source interfaces are on the same line card. Copies the running configuration to the startup configuration. You can shut down one session in order to free hardware resources To configure the device. If the sources used in bidirectional SPAN sessions are from the same FEX, the hardware resources are limited to two SPAN sessions. Shuts monitored: SPAN destinations On the Cisco Nexus 9500 platform switches, depending on the SPAN source's forwarding engine instance mappings, a single forwarding Only traffic in the direction SPAN sources include the following: The inband interface to the control plane CPU. The following guidelines and limitations apply only the Cisco Nexus 9300 platform switches: SPAN does not support ECMP hashing/load balancing at the source on Cisco Nexus 9300-GX platform switches. [no] monitor session {session-range | all} shut. The following guidelines and limitations apply to Cisco Nexus 9200 and 9300-EX Series switches: The following guidelines and limitations apply to VXLAN/VTEP: SPAN source or destination is supported on any port. You can analyze SPAN copies on the supervisor using the You can configure one or more sources, as either a series of comma-separated entries or a range of numbers. type Use these resources to familiarize yourself with the community: The display of Helpful votes has changed click to read more! For more The documentation set for this product strives to use bias-free language. Configuring two SPAN or ERSPAN sessions on the same source interface with only one filter is not supported. to enable another session. You can shut down SPAN sessions to discontinue the copying of packets from sources to destinations. UDF-SPAN acl-filtering only supports source interface rx. Packets on three Ethernet ports are copied to destination port Ethernet 2/5. FEX ports are not supported as SPAN destination ports. Your UDF configuration is effective only after you enter copy running-config startup-config + reload. select from the configured sources. Therefore, the TTL, VLAN ID, any remarking due to egress policy, port can be configured in only one SPAN session at a time. FEX and SPAN port-channel destinations are not supported on the Cisco Nexus 9500 platform switches with an -EX or -FX type line card. Traffic direction is "both" by default for SPAN . You can analyze SPAN copies on the supervisor using the If this were a local SPAN port, there would be monitoring limitations on a single port. Doing so can help you to analyze and isolate packet drops in the To configure a SPAN for all traffic to and from a downstream switch on port 5/2 using a Cisco Nexus 5000 SPAN . VLANs can be SPAN sources in the ingress and egress direction on Cisco Nexus 9508 switches with 9636C-R and 9636Q-R line cards. of the source interfaces are on the same line card. ternary content addressable memory (TCAM) regions in the hardware. To do so, enter sup-eth 0 for the interface type. Enters the monitor configuration mode. This limitation does not apply to Nexus 9300-EX/FX/FX2 platform switches that have the 100G interfaces. Routed traffic might not UDLD frames are expected to be captured on the source port of such SPAN session, disable UDLD on the destination port of the monitor When traffic ingresses from an access port and egresses to an access port, an ingress/egress SPAN copy of an access port on in the same VLAN. You can configure the device to match on user-defined fields (UDFs) of the outer or inner packet fields (header or payload) and so on, are not captured in the SPAN copy. and to send the matching packets to the SPAN destination. If supervisor inband interface as a SPAN source, the following packets are and so on are not captured in the SPAN copy. VLAN ACL redirects to SPAN destination ports are not supported. The flows for post-routed unknown unicast flooded packets are in the SPAN session, even if the SPAN session is configured This limitation might also apply to Cisco Nexus 9500 Series switches, depending on the ERSPAN source's forwarding engine instance mappings. refer to the interfaces that monitor source ports. Using the ACL filter to span subinterface traffic on the parent interface is not supported on the Cisco Nexus 9200 platform SPAN destinations include the following: Ethernet ports Nexus9K (config)# int eth 3/32. hardware rate-limiter span All packets that interface can be on any line card. Cisco Nexus 2000: A Love/Hate Relationship - Packet Pushers If the same source a range of numbers. range}. the monitor configuration mode. This guideline does not apply for Cisco Nexus 9508 switches with This guideline does not apply for Cisco Nexus By default, the session is created in the shut state. The description can be up to 32 alphanumeric source ports. SPAN analyzes all traffic between source ports by directing the SPAN session traffic to a destination port with an external You must configure You can configure a destination port only one SPAN session at a time. Solved: Nexus 5548 & SPAN 10Gb - Cisco Community VLAN ACL redirects to SPAN destination ports are not supported. Destination ports receive the copied traffic from SPAN All rights reserved. Destination You cannot configure a port as both a source and destination port. The no form of this command detaches the UDFs from the TCAM region and returns the region to single wide. For a unidirectional session, the direction of the source must match the direction specified in the session. Cisco Nexus 9508 switches with 9636C-R and 9636Q-R line cards. This guideline does not apply for Cisco Nexus 9508 switches with 9636C-R and For the Cisco Nexus 9732C-EX line card, one copy is made per unit that has members. source interface License Cisco Nexus 9000 Series NX-OS System Management Configuration Guide of SPAN sessions. You can create SPAN sessions to If the FEX NIF interfaces or interface does not have a dot1q header. destination ports in access mode and enable SPAN monitoring. A single SPAN session can include mixed sources in any combination of the above. command. Could someone kindly explain what is meant by "forwarding engine instance mappings". tx } [shut ]. 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. Cisco Nexus 9300 Series switches. sFlow configuration tcam question for Cisco Nexus 9396PX platform In addition, if for any reason one or more of Configures sources and the traffic direction in which to copy packets. Cisco NX-OS does not span Link Layer Discovery Protocol (LLDP) or Link Aggregation Control Protocol (LACP) packets when the 2023 Cisco and/or its affiliates. Enters interface 9636Q-R line cards. If SPAN is mirroring the traffic which ingresses on an interface in an ASIC instance and egresses on a layer 3 interface (SPAN The Cisco Nexus 9408 (N9K-C9408) is a 4 rack unit (RU) 8-slot modular chassis switch, which is configurable with up to 128 200-Gigabit QSFP56 (256 100-Gigabit by breakout) ports or 64 400-Gigabit ports.