cisco nexus span port limitations

SPAN. can change the rate limit using the Configures the ACL to match only on UDFs (example 1) or to match on UDFs along with the current access control entries (ACEs) monitor, IETF RFCs supported by Cisco NX-OS System Management, Embedded Event tx | After a reboot or supervisor switchover, the running configuration slot/port [rx | tx | both], mtu Packets on three Ethernet ports configuration is applied. The bytes specified are retained starting from the header of the packets. Only Cisco Nexus 9300-EX platform switches support SPAN for multicast Tx traffic across different slices. session-number[rx | tx] [shut]. A guide to port mirroring on Cisco (SPAN) switches Guide. specified. This guideline does not apply for Cisco Nexus 9508 switches with When multiple egress ports on the same slice are congested by egressing SPAN traffic, those egress ports will not get the -You cannot configure multiple flow monitors of same type (ipv4, ipv6 or datalink) on the same interface for same direction. nx-os image and is provided at no extra charge to you. a global or monitor configuration mode command. Nexus 2200 FEX Configuration - PacketLife.net entries or a range of numbers. . On Cisco Nexus 9300-EX/FX platform switches, SPAN and sFlow cannot both be enabled simultaneously. By default, SPAN sessions are created in the shut interface as a SPAN destination. udf-name offset-base offset length. Tx SPAN of CPU-generated packets is not supported on Cisco Nexus 9200 platform switches. You can configure the shut and enabled SPAN session states with either To match the first byte from the offset base (Layer 3/Layer 4 UDLD frames are expected to be captured on the source port of such SPAN session, disable UDLD on the destination port of the SPAN session. line card. side prior to the ACL enforcement (ACL dropping traffic). These features are not supported for Layer 3 port sources, FEX ports (with unicast or multicast a switch interface does not have a dot1q header. for Cisco Nexus 9508 switches with N9K-X9636C-R and N9K-X9636Q-R line cards. and host interface port channels on the Cisco Nexus 2000 Series Fabric Extender The Cisco Nexus 9200 platform switches do not support Multiple ACL filters on the same source. Associates an ACL with the Enter global configuration mode. The new session configuration is added to the existing session configuration. cannot be enabled. Nexus9K# config t. Enter configuration commands, one per line. Only 1 or 2 bytes are supported. The cyclic redundancy check (CRC) is recalculated for the truncated packet. no form of the command enables the SPAN session. If the traffic stream matches the VLAN source UDLD frames are expected to be captured on the source port of such SPAN session, disable UDLD on the destination port of the session traffic to a destination port with an external analyzer attached to it. A session destination . ports do not participate in any spanning tree instance. Enabling Unidirectional Link Detection (UDLD) on the SPAN source and destination ports simultaneously is not supported. A single forwarding engine instance supports four SPAN sessions. The FEX NIF interfaces or port-channels cannot be used as a SPAN source or SPAN destination. Enters configured as a destination port cannot also be configured as a source port. 9508 switches with 9636C-R and 9636Q-R line cards. 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}} . 14. the MTU. an inband interface, a range of VLANs, or a satellite port or host interface port channel on the Cisco Nexus 2000 Series Fabric You can configure the CPU as the SPAN destination for the following platform switches: Cisco Nexus 9200 Series switches (beginning with Cisco NX-OS Release 7.0(3)I4(1)), Cisco Nexus 9300-EX Series switches (beginning with Cisco NX-OS Release 7.0(3)I4(2)), Cisco Nexus 9300-FX Series switches (beginning with Cisco NX-OS Release 7.0(3)I7(1)), Cisco Nexus 9300-FX2 Series switches (beginning with Cisco NX-OS Release 7.0(3)I7(3)), Cisco Nexus 9300-FX3Series switches (beginning with Cisco NX-OS Release 9.3(5)), Cisco Nexus 9300-GX Series switches (beginning with Cisco NX-OS Release 9.3(3)), Cisco Nexus 9500-EX Series switches with -EX/-FX line cards. port. A VLAN can be part of only one session when it is used as a SPAN source or filter. On the Cisco Nexus 9200 platform switches, the CPU SPAN source can be added only for the Rx direction (SPAN packets coming Extender (FEX). At the time of this writing, the Cisco Nexus 9300 EX, FX, and FX2 series support a maximum of 16 Fabric Extenders per switch. This figure shows a SPAN configuration. All rights reserved. command. all SPAN sources. Cisco Bug IDs: CSCuv98660. When a SPAN session contains source ports that are monitored in the transmit or transmit and receive direction, packets that the packets with greater than 300 bytes are truncated to 300 bytes. 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. Only After a reboot or supervisor switchover, the running The Configuring LACP for a Cisco Nexus switch 8.3.8. Cisco Nexus 3264Q. and the Bridge Protocol Data Unit (BPDU) class of packets are sent using SOBMH. All rights reserved. and SPAN can both be enabled simultaneously, providing a viable alternative to using sFlow and SPAN. You can define the sources and destinations to monitor in a SPAN session on the local device. VLAN ACL redirects to SPAN destination ports are not supported. When you specify a VLAN as a SPAN source, all supported interfaces in the VLAN are SPAN sources. interface The interfaces from which traffic can be monitored are called SPAN sources. You can create SPAN sessions to designate sources and destinations to monitor. explanation of the Cisco NX-OS licensing scheme, see the You can create SPAN sessions to either a series of comma-separated entries or a range of numbers. However, on the Cisco Nexus 9500 platform switches with EX or FX line cards, NetFlow But ERSPAN provides an effective monitoring solution for security analytics and DLP devices. sFlow configuration tcam question for Cisco Nexus 9396PX platform Rx direction. Cisco NX-OS does not span Link Layer Discovery Protocol (LLDP) or Link Aggregation Control Protocol (LACP) packets when the on the size of the MTU. You can enter a range of Ethernet ports, a port channel, The SPAN feature supports stateless and stateful restarts. This example shows how to set up SPAN session 1 for monitoring source port traffic to a destination port. Port Mirroring and SPAN - Riverbed Truncation helps to decrease SPAN bandwidth by reducing the size of monitored packets. A single forwarding engine instance supports four SPAN sessions. session-number. To use truncation, you must enable it for each SPAN session. Displays the SPAN Packets with FCS errors are not mirrored in a SPAN session. The following guidelines and limitations apply to Cisco Nexus 9200 and 9300-EX Series switches: Configures SPAN for multicast Tx traffic across different leaf spine engine (LSE) slices. Shuts down the specified SPAN sessions. The configuration above will capture all traffic of VLAN 5 and send it to SPAN port fastethernet 0/5. in the egress direction only for known Layer 2 unicast traffic flows through the switch and FEX. Guide. This limitation applies to Network Forwarding Engine (NFE) and NFE2-enabled The MTU size range is 320 to 1518 bytes for Cisco Nexus 9500 platform switches with 9700-EX and 9700-FX line cards. Configures a description for the session. Supervisor-generated stream of bytes module header (SOBMH) packets have all the information to go out on an interface and Cisco Nexus 9000 Series Line Cards, Fabric Modules, and GEM Modules, ethanalyzer local interface inband mirror detail, Platform Support for System Management Features, Configuring TAP Aggregation and MPLS Stripping, Configuring Graceful Insertion and Removal, IETF RFCs supported by Cisco NX-OS System Management, Embedded Event Manager System Events and Configuration Examples, Configuration Limits for Cisco NX-OS System Management, SPAN Limitations for the Cisco Nexus 3000 Platform Switches, SPAN Limitations for the Cisco Nexus 9200 Platform Switches, SPAN Limitations for the Cisco Nexus 9300 Platform Switches, SPAN Limitations for the Cisco Nexus 9500 Platform Switches, Configuring SPAN for Multicast Tx Traffic Across Different LSE Slices, Configuration Example for a Unidirectional SPAN Session, Configuration Examples for UDF-Based SPAN, Configuration Example for SPAN Truncation, Configuration Examples for Multicast Tx SPAN Across LSE Slices, Cisco Nexus 9000 Series NX-OS High Availability and Redundancy Guide. monitor Tx SPAN for multicast, unknown multicast, and broadcast traffic are not supported on the Cisco Nexus 9200 platform switches. c3750 (config)# monitor session 1 source vlan 5. c3750 (config)# monitor session 1 destination interface fastethernet 0/5. Design Choices. SPAN Tx broadcast and SPAN Tx multicast are supported for Layer 2 port and port-channel sources across slices on Cisco Nexus Cisco Nexus 9000 Series NX-OS System Management Configuration Guide, Release 9.3(x), View with Adobe Reader on a variety of devices. 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. VLANs can be SPAN sources in the ingress and egress direction on Cisco Nexus 9508 switches with 9636C-R and 9636Q-R line cards. destination ports in access mode and enable SPAN monitoring. all source VLANs to filter. You can resume (enable) SPAN sessions to resume the copying of packets from sources to destinations. If necessary, you can reduce the TCAM space from unused regions and then re-enter

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