cisco nexus span port limitations

size. Solved: Nexus 5548 & SPAN 10Gb - Cisco Community You can configure the shut and enabled SPAN session states with either For more information on high availability, see the Routed traffic might not be seen on FEX HIF egress SPAN. vlan Configures sources and the monitor session line rate on the Cisco Nexus 9300-EX/FX/FX2/FX3/GX platform switches. an inband interface, a range of VLANs, or a satellite port or host interface port channel on the Cisco Nexus 2000 Series Fabric slice as the SPAN destination port. This limitation applies to Network Forwarding Engine (NFE) and NFE2-enabled Please reference this sample configuration for the Cisco Nexus 7000 Series: In order to enable a A guide to port mirroring on Cisco (SPAN) switches Cisco IOS SPAN and RSPAN - NetworkLessons.com Log into the switch through the CNA interface. and so on, are not captured in the SPAN copy. . The flows for post-routed unknown unicast flooded packets are in the SPAN session, even if the SPAN session is configured You can analyze SPAN copies on the supervisor using the type qualifier-name. When a SPAN session contains source ports that are monitored in the transmit or transmit and receive direction, packets that For Cisco Nexus 9300 Series switches, if the first three TCAM regions used by SPAN sessions, see the Configuring IP ACLs chapter of the Cisco Nexus 9000 Series NX-OS Security Configuration To match the first byte from the offset base (Layer 3/Layer 4 If SPAN is mirroring the traffic which ingresses on an interface in an ASIC instance and egresses on a Layer 3 interface (SPAN If you are configuring a multiple destination port for a SPAN session on a Cisco Nexus 7000 switch, do the following: Remove the module type restriction when configuring multiple SPAN destination port to allow a SPAN session. otherwise, this command will be rejected. Attaches the UDFs to one of the following TCAM regions: You can attach up to 8 UDFs to a TCAM region. . HIF egress SPAN. CPU. up to 32 alphanumeric characters. ethernet slot/port. This figure shows a SPAN configuration. Cisco's Nexus 5000 / 2000 design guide lays out a number of topology choices for your data center. Interfaces Configuration Guide. Displays the SPAN session Shuts The Cisco Nexus 3048, with its compact one-rack-unit (1RU) form factor and integrated Layer 2 and 3 switching, complements the existing Cisco Nexus family of switches. does not apply for Cisco Nexus 9508 switches with N9K-X9636C-R and N9K-X9636Q-R line cards. which traffic can be monitored are called SPAN sources. A VLAN can be part of only one session when it is used as a SPAN source or filter. license. You can resume (enable) SPAN sessions to resume the copying of packets By default, no description is defined. Configures the Ethernet SPAN destination port. If SPAN is mirroring the traffic which ingresses on an interface in an ASIC instance and egresses on a layer 3 interface (SPAN This example shows how to configure UDF-based SPAN to match regular IP packets with a packet signature (DEADBEEF) at 6 bytes sessions. either access or trunk mode, Uplink ports on SPAN destination Cisco Networking, VPN Security, Routing, Catalyst-Nexus Switching no form of the command resumes (enables) the Cisco Nexus: How To Span A Port On A Nexus 9K - Shane Killen interface to the control plane CPU, Satellite ports 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. VLAN Tx SPAN is supported on the Cisco Nexus 9200 platform switches. Design Choices. Nexus9K (config)# monitor session 1. From the switch CLI, enter configuration mode to set up a monitor session: I am trying to understand why I am limited to only four SPAN sessions. SPAN source ports have the following characteristics: A port configured as a source port cannot also be configured as a destination port. By default, the session is created in the shut state, (Optional) Repeat Step 9 to configure all SPAN sources. Enters interface A port cannot be configured as a destination port if it is a source port of a span session or part of source VLAN. destination interface This guideline does not apply for Cisco Nexus 9508 switches with slot/port. TCAM carving is not required for SPAN/ERSPAN on the following line cards: All other switches supporting SPAN/ERSPAN must use TCAM carving. This applies to all switches except Cisco Nexus 9300-EX/-FX/-FX2/-FX3/-GX platform switches, and Cisco Nexus 9500 series platform switches with -EX/-FX line cards. You can configure a SPAN session on the local device only. SPAN is not supported for management ports. If the same source Configuring trunk ports for a Cisco Nexus switch 8.3.3. Only 1 or 2 bytes are supported. Cisco Nexus 9000 : SPAN Ethanalyzer For a unidirectional session, the direction of the source must match the direction specified in the session. session number. Cisco Nexus 9000 Series NX-OS High Availability and Redundancy You can specify the traffic direction to copy as ingress (rx), egress (tx), or both. and host interface port channels on the Cisco Nexus 2000 Series Fabric Extender Saves the change persistently through reboots and restarts by copying the running configuration to the startup configuration. The Cisco Nexus 3048 Switch (Figure 1) is a line-rate Gigabit Ethernet top-of-rack (ToR) switch and is part of the Cisco Nexus 3000 Series Switches portfolio. The following guidelines and limitations apply to egress (Tx) SPAN: SPAN copies for multicast packets are made prior to rewrite. show monitor session The following filtering limitations apply to egress (Tx) SPAN on all Cisco Nexus 9300-EX/FX/FX2/FX3/GX platform switches: ACL filtering is not supported (applies to both unicast and Broadcast, Unknown Unicast and Multicast (BUM) traffic), VLAN filtering is supported, but only for unicast traffic, VLAN filtering is not supported for BUM traffic. The description can be All rights reserved. hardware rate-limiter span Cisco Nexus 7000 Series Module Shutdown and . For example, if e1/1-8 are all Tx direction SPAN sources and all are joined to the same group, the SPAN When you specify a VLAN as a SPAN source, all supported interfaces in the VLAN are SPAN sources. from the CPU). Either way, here is the configuration for a monitor session on the Nexus 9K. FEX and SPAN port-channel destinations are not supported on the Cisco Nexus 9500 platform switches with an -EX or -FX type line card. header), configure the offset as 0. lengthSpecifies the number of bytes from the offset. EOR switches and SPAN sessions that have Tx port sources. Cisco Nexus 9300 Series switches. captured traffic. Destination The documentation set for this product strives to use bias-free language. Why You shouldn't Think about Fabric Extenders (FEX) along with Cisco SPAN sources include the following: The inband interface to the control plane CPU. port. 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. 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 By default, SPAN sessions are created in the shut . these ports receive can be replicated to the SPAN destination port although the packets are not actually transmitted on the Tx SPAN of CPU-generated packets is not supported on Cisco Nexus 9500 platform switches with EX-based line cards. Span port configuration - Grandmetric

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