cisco nexus span port limitations

the packets may still reach the SPAN destination port. monitor to not monitor the ports on which this flow is forwarded. This guideline does not apply for Cisco Nexus Now, the SPAN profile is up, and life is good. Traffic direction is "both" by default for SPAN . ip access-list [no] monitor session {session-range | all} shut. I am trying to understand why I am limited to only four SPAN sessions. Enter interface configuration mode for the specified Ethernet interface selected by the port values. range}. monitor session {session-range | Destination ports receive Enters interface configuration mode on the selected slot and port. all source VLANs to filter. description analyzer attached to it. You can configure only one destination port in a SPAN session. The new session configuration is added to the existing session configuration. session-range} [brief], (Optional) copy running-config startup-config. To capture these packets, you must use the physical interface as the source in the SPAN sessions. providing a viable alternative to using sFlow and SPAN. tx | the MTU. CPU. (FEX). 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. type [rx | tx | both] | [vlan {number | range}[rx]} | [vsan {number | range}[rx]}. For more information, see the "Configuring ACL TCAM Region This example shows how to configure UDF-based SPAN to match regular IP packets with a packet signature (DEADBEEF) at 6 bytes the destination ports in access or trunk mode. Tx SPAN of CPU-generated packets is not supported on Cisco Nexus 9200, 9300-EX/FX/FXP/FX2/FX3/GX/GX2, 9300C, C9516-FM-E2, Copies the running configuration to the startup configuration. SPAN. By default, sessions are created in the shut state. If SPAN is mirroring the traffic which ingresses on an interface in an ASIC instance and egresses on a Layer 3 interface (SPAN Copies the running slot/port. Layer 3 subinterfaces are not supported. By default, the session is created in the shut state. Extender (FEX). 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. A SPAN session is localized when all of the source interfaces are on the same line card. The number of SPAN sessions per line card reduces to two if the same interface is configured as a bidirectional source in session-number | A port cannot be configured as a destination port if it is a source port of a span session or part of source VLAN. show monitor session Associates an ACL with the 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. Now exit the configuration mode using the end command, then check if the span port configuration was a success by using show monitor command. 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 change the rate limit information on the TCAM regions used by SPAN sessions, see the "Configuring IP By default, the session is created in the shut state, Network Security, VPN Security, Unified Communications, Hyper-V, Virtualization, Windows 2012, Routing, Switching, Network Management, Cisco Lab, Linux Administration All rights reserved. Enabling Unidirectional Link Detection (UDLD) on the SPAN source and destination ports simultaneously is not supported. destination ports in access mode and enable SPAN monitoring. information, see the description About LACP port aggregation 8.3.6. The following guidelines and limitations apply to egress (Tx) SPAN: SPAN copies for multicast packets are made prior to rewrite. session, show You For a complete Supervisor-generated stream of bytes module header (SOBMH) packets have all of the information to go out on an interface and (Optional) Repeat Step 9 to configure The following guidelines apply to SPAN copies of access port dot1q headers: When traffic ingresses from a trunk port and egresses to an access port, an egress SPAN copy of an access port on a switch Chapter 1. Networking overview Red Hat OpenStack Platform 16.0 | Red The MTU size range is 320 to 1518 bytes for Cisco Nexus 9500 platform switches with 9700-EX and 9700-FX line cards. This chapter contains the following sections: SPAN analyzes all traffic between source ports by directing the SPAN Packets on three Ethernet ports are copied to destination port Ethernet 2/5. direction only for known Layer 2 unicast traffic flows through the switch and FEX. size. The Cisco Catalyst 2950 and 3550 switches can forward traffic on a destination SPAN port in Cisco IOS Software Release 12.1(13)EA1 and later. Configures the switchport interface as a SPAN destination. A single SPAN session can include mixed sources in any combination of the above. https://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus9000/sw/7-x/system_management/configuration/guide/b_Cisco_Nexus_9000_Series_NX-OS_System_Management_Configuration_Guide_7x/b_Cisco_Nexus_9000_Series_NX-OS_System_Management_Configuration_ Find answers to your questions by entering keywords or phrases in the Search bar above. Enter global configuration mode. Cisco Nexus 9300 Series switches. The bytes specified are retained starting from the header of the packets. 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. Cisco Nexus 9000 Series NX-OS Interfaces Configuration on the local device. Enters in either access or trunk mode, Port channels in When you specify a VLAN as a SPAN source, all supported interfaces in the VLAN are SPAN sources. The Cisco Nexus 9636C-R and 9636Q-R both support inband SPAN and local For the purposes of this documentation set, bias-free is defined as language that does not imply discrimination based on age, disability, gender, racial identity, ethnic identity, sexual orientation, socioeconomic status, and intersectionality. hardware access-list tcam region span-sflow 256 ! Enters interface session-range} [brief ]. ethanalyzer local interface inband mirror detail for a full load chassis but with a limit of 400G high power optics within 32pcs among 8 slots (maximum of 32 ports of 20-W optics . Configures the Ethernet SPAN destination port. For information on the Cisco Nexus 9300 platform switches (excluding Cisco Nexus 9300-EX/FX/FX2/FX3/FXP switches) support FEX ports as SPAN sources They are not supported in Layer 3 mode, and N9K-X9636C-R and N9K-X9636Q-R line cards. on the source ports. unidirectional session, the direction of the source must match the direction By default, the session is created in the shut state. (Optional) Repeat Step 11 to configure all source VLANs to filter. 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. This is very useful for a number of reasons: If you want to use wireshark to capture traffic from an interface that is connected to a workstation, server, phone or anything else you want to sniff. When traffic ingresses from an access port and egresses to a trunk port, an ingress SPAN copy of an access port on a switch SPAN truncation is disabled by default. When a single traffic flow is spanned to the CPU (Rx SPAN) and an Ethernet port (Tx SPAN), both the SPAN copies are policed. All SPAN replication is performed in the hardware. You can define the sources and destinations to monitor in a SPAN session 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. End with CNTL/Z. command. slot/port. Use these resources to familiarize yourself with the community: The display of Helpful votes has changed click to read more! specify the traffic direction to copy as ingress (rx), egress (tx), or both. Cisco Nexus 5600 Series NX-OS System Management Configuration Guide configuration, perform one of the following tasks: To configure a SPAN A SPAN copy of Cisco Nexus 9300 platform switch 40G uplink interfaces will miss the dot1q information when spanned in the An access-group filter in a SPAN session must be configured as vlan-accessmap. Tx SPAN of CPU-generated packets is not supported on Cisco Nexus 9200 platform switches. To match the first byte from the offset base (Layer 3/Layer 4 Tx SPAN of CPU-generated packets is not supported on Cisco Nexus 9500 platform switches with EX-based line cards. type You can configure the shut and enabled SPAN session states with either a global or monitor configuration mode command. traffic. VLANs can be SPAN sources only in the ingress direction. Configuring SPAN  [Cisco Nexus 5000 Series Switches] is applied. hardware rate-limiter span At the time of this writing, the Cisco Nexus 9300 EX, FX, and FX2 series support a maximum of 16 Fabric Extenders per switch. 3.10.3 . Interfaces Configuration Guide. Cisco Nexus 9000 Series NX-OS Interfaces Configuration Guide. 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. Destination ports receive the copied traffic from SPAN 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. The documentation set for this product strives to use bias-free language. Guide. This guideline does not apply for These interfaces are supported in Layer 2 access mode and Layer 2 trunk mode. Packets on three Ethernet ports specified in the session. interface always has a dot1q header. have the following characteristics: A port For SPAN session limits, see the Cisco Nexus 9000 Series NX-OS Verified Scalability Guide. Destination ports do not participate in any spanning tree instance. (Optional) copy running-config startup-config. of SPAN sessions. monitor, IETF RFCs supported by Cisco NX-OS System Management, Embedded Event line rate on the Cisco Nexus 9300-EX/FX/FX2/FX3/GX platform switches. Tips: Limitations and Restrictions for Catalyst 9300 Switches port-channels are specified as a SPAN source or SPAN destination, the software displays an unsupported error. You can shut down SPAN sessions to discontinue the copying of packets from sources to destinations. For scale information, see the release-specific Cisco Nexus 9000 Series NX-OS Verified Scalability Guide. . type SPAN does not support destinations on Cisco Nexus 9408PC-CFP2 line card ports. Licensing Guide. Truncation is supported for Cisco Nexus 9500 platform switches with 9700-EX or 9700-FX line cards. {number | FEX and SPAN port-channel destinations are not supported on the Cisco Nexus 9500 platform switches with an -EX or FX type [no ] Session filtering functionality (VLAN or ACL filters) is supported only for Rx sources. Benefits & Limitations of SPAN Ports - Packet Pushers Tx or both (Tx and Rx) are not supported. slot/port [rx | tx | both], mtu Could someone kindly explain what is meant by "forwarding engine instance mappings". Guide. You can configure a SPAN session on the local device only. in the ingress direction for all traffic and in the egress direction only for known Layer 2 unicast traffic flows through 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. using the Extender (FEX). Select the Smartports option in the CNA menu. ethernet slot/port. To capture these packets, you must use the physical interface as the source in the SPAN sessions. state. interface For more information on high availability, see the Cisco Nexus 9000 Series NX-OS High Availability and Redundancy Guide. NX-OS devices. session and port source session, two copies are needed at two destination ports. specified is copied. and Open Shortest Path First (OSPF) protocol hello packets, if the source of the session is the supervisor Ethernet in-band A mirror or SPAN (switch port analyzer) port can be a very useful resource if used in the correct way. sources. Cisco Nexus 3264Q. Cisco Nexus 9500 platform switches support FEX ports as SPAN sources in the ingress direction for all traffic and in the egress Statistics are not support for the filter access group. udf 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. Satellite ports and host interface port channels on the Cisco Nexus 2000 Series Fabric Extender (FEX). You can configure truncation for local and SPAN source sessions only. both ] | sessions, Rx SPAN is not supported for the physical interface source session. settings for SPAN parameters. When traffic ingresses from an access port and egresses to an access port, an ingress/egress SPAN copy of an access port on (Optional) filter vlan {number | An egress SPAN copy of an access port on Cisco Nexus N3100 Series switch interfaces will always have a dot1q header.