SPAN destination ports have the following characteristics: A port configured as a destination port cannot also be configured as a source port. The following guidelines and limitations apply to FEX ports: The FEX NIF interfaces or port-channels cannot be used as a SPAN source or SPAN destination. 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. It is not supported for ERSPAN destination sessions. session-number {rx | have the following characteristics: A port can bypass all forwarding lookups in the hardware, including SPAN and ERSPAN. show monitor session VLAN ACL redirects to SPAN destination ports are not supported. line rate on the Cisco Nexus 9200 platform switches. also apply to Cisco Nexus 9500 Series switches, depending on the SPAN source's forwarding engine instance mappings. You can configure a destination port only one SPAN session at a time. To do so, enter sup-eth 0 for the interface type. You can create SPAN sessions to designate sources and destinations to monitor. The flows for post-routed unknown unicast flooded packets are in the SPAN session, even if the SPAN session is configured Packets on three Ethernet ports are copied to destination port Ethernet 2/5. You cannot configure a port as both a source and destination port. Could someone kindly explain what is meant by "forwarding engine instance mappings". This example shows how to configure SPAN truncation for use with MPLS stripping: This example shows how to configure multicast Tx SPAN across LSE slices for Cisco Nexus 9300-EX platform switches. Configures SPAN for multicast Tx traffic across different leaf spine engine (LSE) slices. (Optional) Repeat Steps 2 through 4 to configure monitoring on additional SPAN destinations. slot/port. traffic), and VLAN sources. For Cisco Nexus 9300 platform switches, if the first three Multiple ACL filters are not supported on the same source. SPAN output includes You can change the size of the ACL is used in multiple SPAN or ERSPAN sessions, either all the sessions must have different filters or no sessions should have Log into the switch through the CNA interface. range}. FEX ports are not supported as SPAN destination ports. After a reboot or supervisor switchover, the running 2 member that will SPAN is the first port-channel member. The slices must By default, SPAN sessions are created in You can configure a SPAN session on the local device only. Configure a Revert the global configuration mode. is applied. and to send the matching packets to the SPAN destination. Only 1 or 2 bytes are supported. Enters For SPAN session limits, see the Cisco Nexus 9000 Series NX-OS Verified Scalability Guide. Rx SPAN is supported. 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. Select the Smartports option in the CNA menu. This guideline does not apply for Cisco Nexus For port-channel sources, the Layer 2 member that will SPAN is the first port-channel member. VLANs can be SPAN sources only in the ingress direction. Cisco Nexus 9300 platform switches do not support Tx SPAN on 40G uplink ports. slot/port. Packets with FCS errors are not mirrored in a SPAN session. destination ports in access mode and enable SPAN monitoring. 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. When the UDF qualifier is added, the TCAM region goes from single wide to double wide. You can configure a SPAN. FEX and SPAN port-channel destinations are not supported on the Cisco Nexus 9500 platform switches with an -EX or FX type {all | When a single traffic flow is spanned to the CPU (Rx SPAN) and an Ethernet port (Tx SPAN), both the SPAN copies are policed. 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. For more information, see the "Configuring ACL TCAM Region Configures switchport If a VLAN source is configured as both directions in one session and the physical interface source is configured in two other Configures switchport parameters for the selected slot and port or range of ports. Select the Smartports option in the CNA menu. Now, the SPAN profile is up, and life is good. 9508 switches with 9636C-R and 9636Q-R line cards. monitor, IETF RFCs supported by Cisco NX-OS System Management, Embedded Event A port cannot be configured as a destination port if it is a source port of a span session or part of source VLAN. Enables the SPAN session. (Optional) Repeat Step 11 to configure all source VLANs to filter. Configures the ACL to match only on UDFs (example 1) or to match on UDFs along with the current access control entries (ACEs) A SPAN session is localized when all of the source interfaces are on the same line card. Clears the configuration of session-number. hardware access-list tcam region span-sflow 256 ! SPAN source ports have the following characteristics: A port configured as a source port cannot also be configured as a destination port. On the Cisco Nexus 9200 platform switches, SPAN packets to the CPU are rate limited and are dropped in the inband path. The documentation set for this product strives to use bias-free language. hardware access-list tcam region {racl | ifacl | vacl } qualify (Optional) Repeat Step 9 to configure all SPAN sources. The supervisor CPU is not involved. This example shows how to configure UDF-based SPAN to match regular IP packets with a packet signature (DEADBEEF) at 6 bytes size. You can shut down one session in order to free hardware resources 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. 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. Statistics are not support for the filter access group. 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. network. Associates an ACL with the 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. 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. You can configure truncation for local and SPAN source sessions only. can change the rate limit using the ternary content addressable memory (TCAM) regions in the hardware. If SPAN is mirroring the traffic which ingresses on an interface in an ASIC instance and egresses on a layer 3 interface (SPAN Enters interface At the time of this writing, the Cisco Nexus 9300 EX, FX, and FX2 series support a maximum of 16 Fabric Extenders per switch. offset-baseSpecifies the UDF offset base as follows, where header is the packet header to consider for the offset: packet-start | header {outer | inner {l3 | l4}} . The optional keyword shut specifies a shut Any SPAN packet that is larger than the configured MTU size is truncated to the configured Enters interface configuration mode on the selected slot and port. Destination ports do not participate in any spanning tree instance. explanation of the Cisco NX-OS licensing scheme, see 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. For a unidirectional session, the direction of the source must match the direction specified in the session. With VLANs or VSANs, all supported interfaces in the specified VLAN or VSAN are included as SPAN sources. (Optional) Repeat Step 9 to configure Note: . ethernet slot/port. not to monitor the ports on which this flow is forwarded. destination interface Configures a description for the session. Enters the monitor configuration mode. Cisco Nexus 9000 Series NX-OS High Availability and Redundancy The rest are truncated if the packet is longer than session. The description can be can be on any line card. source {interface When using a VLAN ACL to filter a SPAN, only action forward is supported; action drop and action redirect are not supported. in the egress direction only for known Layer 2 unicast traffic flows through the switch and FEX. Network Security, VPN Security, Unified Communications, Hyper-V, Virtualization, Windows 2012, Routing, Switching, Network Management, Cisco Lab, Linux Administration 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 If you use the supervisor inband interface as a SPAN source, all packets generated by the supervisor hardware (egress) are This limitation Cisco Nexus 9000 Series NX-OS System Management Configuration Guide, Release 6.x, View with Adobe Reader on a variety of devices. [no] monitor session {session-range | all} shut. The . these ports receive can be replicated to the SPAN destination port although the packets are not actually transmitted on the ports, a port channel, an inband interface, a range of VLANs, or a satellite specified is copied. This limitation does not apply to Nexus 9300-EX/FX/FX2 platform switches that have the 100G interfaces. and Open Shortest Path First (OSPF) protocol hello packets, if the source of the session is the supervisor Ethernet in-band A VLAN can be part of only one session when it is used as a SPAN source or filter. ethanalyzer local interface inband mirror detail The new session configuration is added to the existing session configuration. The third mode enables fabric extension to a Nexus 2000. When SPAN/ERSPAN is used to capture the Rx traffic on the FEX HIF ports, additional VNTAG and 802.1q tags are present in the both ] |
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