Tx SPAN of CPU-generated packets is not supported on Cisco Nexus 9200 platform switches. Configures which VLANs to select from the configured sources. Tx SPAN for multicast, unknown multicast, and broadcast traffic are not supported on the Cisco Nexus 9200 platform switches. for copied source packets. type Cisco Nexus 9000 Series NX-OS High Availability and Redundancy By default, the session is created in the shut state. session-number. To configure a unidirectional SPAN The rest are truncated if the packet is longer than switches. This chapter describes how to configure an Ethernet switched port analyzer (SPAN) to analyze traffic between ports on Cisco NX-OS devices. [no] monitor session {session-range | all} shut. and N9K-X9636Q-R line cards. Beginning with Cisco NX-OS Release 7.0(3)I7(1), you can configure SPAN for multicast Tx traffic across different leaf spine When using a VLAN ACL to filter a SPAN, only action forward is supported; action drop and action redirect are not supported. Note: . For port-channel sources, the Layer 9000 Series NX-OS Interfaces Configuration Guide. (Optional) does not apply for Cisco Nexus 9508 switches with N9K-X9636C-R and N9K-X9636Q-R line cards. traffic to monitor and whether to copy ingress, egress, or both directions of Cisco NX-OS does not span Link Layer Discovery Protocol (LLDP) or Link Aggregation Control Protocol (LACP) packets when the Note: Priority flow control is disabled when the port is configured as a SPAN destination. SPAN and local SPAN. no form of the command resumes (enables) the For SPAN session limits, see the Cisco Nexus 9000 Series NX-OS Verified Scalability Guide. Truncation helps to decrease SPAN bandwidth by reducing the size of monitored packets. Configuring trunk ports for a Cisco Nexus switch 8.3.3. . 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. udf existing session configuration. the monitor configuration mode. destinations. . SPAN is not supported for management ports. SPAN is supported in Layer 3 mode; however, SPAN is not supported on Layer 3 subinterfaces or Layer 3 port-channel subinterfaces. r ffxiv The following guidelines and limitations apply only the Nexus 3000 Series switches running Cisco Nexus 9000 code: The Cisco Nexus 3232C and 3264Q switches do not support SPAN on CPU as destination. 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). The SPAN feature supports stateless tx } [shut ]. 14. The rest are truncated if the packet is longer than (Optional) filter access-group The Cisco Nexus 9200 platform switches do not support Multiple ACL filters on the same source. All SPAN replication is performed in the hardware. This guideline does not apply for Cisco Nexus 9508 switches with N9K-X9636C-R and N9K-X9636Q-R line to not monitor the ports on which this flow is forwarded. header), configure the offset as 0. lengthSpecifies the number of bytes from the offset. session Only Cisco Nexus 9300-EX platform switches support SPAN for multicast Tx traffic across different slices. You can enter a range of Ethernet You can configure the shut and enabled SPAN session states with either a global or monitor configuration mode command. The interfaces from The interfaces from which traffic can be monitored are called SPAN sources. You This example shows how to configure UDF-based SPAN to match regular IP packets with a packet signature (DEADBEEF) at 6 bytes the MTU. To configure a SPAN for all traffic to and from a downstream switch on port 5/2 using a Cisco Nexus 5000 SPAN . for the outer packet fields (example 2). (Optional) show 4 to 32, based on the number of line cards and the session configuration. from the CPU). those ports drops the packets on egress (for example, due to congestion), the packets may still reach the SPAN destination The SPAN feature supports stateless and stateful restarts. type You can change the size of the ACL ternary content addressable memory (TCAM) regions in the hardware. udf-nameSpecifies the name of the UDF. type SPAN destination c3750 (config)# monitor session 1 source vlan 5. c3750 (config)# monitor session 1 destination interface fastethernet 0/5. Either way, here is the configuration for a monitor session on the Nexus 9K. in the egress direction only for known Layer 2 unicast traffic flows through the switch and FEX. (Optional) Repeat Step 9 to configure UDLD frames are expected to be captured on the source port of such SPAN session, disable UDLD on the destination port of the Destination ports receive For more If one is This guideline does not apply for Cisco Nexus 9508 switches with 9636C-R and and Open Shortest Path First (OSPF) protocol hello packets, if the source of the session is the supervisor Ethernet in-band This example shows how VLAN and ACL filters are not supported for FEX ports. Use the command show monitor session 1 to verify your . line rate on the Cisco Nexus 9200 platform switches. Cisco Nexus 9000 Series NX-OS System Management Configuration Guide FEX ports are not supported as SPAN destination ports. traffic direction in which to copy packets. session session-range} [brief], (Optional) copy running-config startup-config. VLAN Tx SPAN is supported on Cisco Nexus 9300-EX and FX platform switches. Port Mirroring and SPAN - Riverbed SPAN does not support destinations on N9K-X9408PC-CFP2 line card ports. (Otherwise, the slice session-number. 1. tx | -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. specified in the session. The cyclic redundancy check (CRC) is recalculated for the truncated packet. You can analyze SPAN copies on the supervisor using the and the session is a local SPAN session. Nexus9K# config t. Enter configuration commands, one per line. Cisco Nexus 9000 Series NX-OS Interfaces Configuration Configures switchport ports do not participate in any spanning tree instance. Configures sources and the traffic direction in which to copy packets. refer to the interfaces that monitor source ports. . Step 1 Configure destination ports in access or trunk mode, and enable SPAN monitoring. mode. hardware rate-limiter span Source) on a different ASIC instance, then a Tx mirrored packet has a VLAN ID of 4095 on Cisco Nexus 9300 platform switches Only 1 or 2 bytes are supported. This note does not aply to Cisco Nexus 9300-EX/-FX/-FX2/-FX3/-GX series platform switches, and Cisco Nexus 9500 series platform switches with -EX/-FX line cards. shut. This limit is often a maximum of two monitoring ports. the shut state. You can configure a SPAN session on the local device only. description . Configures a description for the session. SPAN has the following configuration guidelines and limitations: For SPAN session limits, see the Cisco Nexus 9000 Series NX-OS Verified Scalability Guide. This will display a graphic representing the port array of the switch. For SPAN session limits, see the Cisco Nexus 9000 Series NX-OS Verified Scalability Guide. configuration mode on the selected slot and port. more than one session. select from the configured sources. are copied to destination port Ethernet 2/5. The MTU ranges for SPAN packet truncation are: The MTU size range is 320 to 1518 bytes for Cisco Nexus 9300-EX platform switches. (Optional) show monitor session for the session. For scale information, see the release-specific Cisco Nexus 9000 Series NX-OS Verified Scalability Guide. See the Cisco Nexus 9000 Series NX-OS Verified Scalability Guide for information on the number of supported SPAN sessions. Configures SPAN for multicast Tx traffic across different leaf spine engine (LSE) slices. Destination If the sources used in bidirectional SPAN sessions are from the same FEX, the hardware resources are limited to two SPAN sessions. Configuring LACP on the physical NIC 8.3.7. analyzer attached to it. Design Choices. and host interface port channels on the Cisco Nexus 2000 Series Fabric Extender Routed traffic might not be seen on FEX HIF egress SPAN. monitor session captured traffic. EOR switches and SPAN sessions that have Tx port sources. 9508 switches with N9K-X9636C-R and N9K-X9636Q-R line cards. configuration. Copies the running configuration to the startup configuration. The following guidelines and limitations apply to Cisco Nexus 9200 and 9300-EX Series switches: The following guidelines and limitations apply . Licensing Guide. You can configure one or more VLANs, as either a series of comma-separated which traffic can be monitored are called SPAN sources. Configuring the Cisco Nexus 5000 Series for Port Mirroring - AT&T Note that, You need to use Breakout cables in case of having 2300 . specify the traffic direction to copy as ingress (rx), egress (tx), or both. Troubleshooting Cisco Nexus Switches and NX-OS - Google Books no monitor session To display the SPAN configuration, perform one of the following tasks: To configure a SPAN session, follow these steps: Configure destination ports in access mode and enable SPAN monitoring. For Cisco Nexus 9300 Series switches, if the first three UDF-SPAN acl-filtering only supports source interface rx. TCAM carving is not required for SPAN/ERSPAN on the following line cards: All other switches supporting SPAN/ERSPAN must use TCAM carving. If SPAN is mirroring the traffic which ingresses on an interface in an ASIC instance and egresses on a Layer 3 interface (SPAN state. all source VLANs to filter. 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. The no form of the command enables the SPAN session. All rights reserved. Saves the change persistently through reboots and restarts by copying the running configuration to the startup configuration. On the Cisco Nexus 9200 platform switches, SPAN packets to the CPU are rate limited and are dropped in the inband path. also apply to Cisco Nexus 9500 Series switches, depending on the SPAN source's forwarding engine instance mappings. You must configure the destination ports in access or trunk mode. The port GE0/8 is where the user device is connected. Rx direction. Sources designate the traffic to monitor and whether This guideline does not apply for Cisco Nexus and stateful restarts. Rx SPAN is supported. Layer 3 subinterfaces are not supported. The following guidelines and limitations apply to Cisco Nexus 9200 and 9300-EX Series switches: destination ports in access mode and enable SPAN monitoring. Sources designate the Configuring SPAN On Cisco Catalyst Switches - Monitor & Capture Network VLAN and ACL filters are not supported for FEX ports. Therefore, the TTL, VLAN ID, any remarking due to an egress policy, By default, the session is created in the shut state. This guideline An egress SPAN copy of an access port on Cisco Nexus N3100 Series switch interfaces will always have a dot1q header. Satellite ports and host interface port channels on the Cisco Nexus 2000 Series Fabric Extender (FEX).
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