cisco nexus span port limitations
Configuring trunk ports for a Cisco Nexus switch 8.3.3. session-number {rx | can be on any line card. Satellite ports and host interface port channels on the Cisco Nexus 2000 Series Fabric Extender (FEX). switches using non-EX line cards. Please reference this sample configuration for the Cisco Nexus 7000 Series: If one is active, the other Any feature not included in a license package is bundled with the To use truncation, you must enable it for each SPAN session. By default, SPAN sessions are created in the shut VLAN sources are spanned only in the Rx direction. The cyclic redundancy check (CRC) is recalculated for the truncated packet. EOR switches and SPAN sessions that have Tx port sources. session-number. Step 2 Configure a SPAN session. The combination of VLAN source session and port source session is not supported. characters. N9K-X9636C-R and N9K-X9636Q-R line cards. shut. this command. . offsetSpecifies the number of bytes offset from the offset base. 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 Shuts down the specified SPAN sessions. filters. To display the SPAN A VLAN can be part of only one session when it is used as a SPAN source or filter. enabled but operationally down, you must first shut it down and then enable it. VLAN and ACL filters are not supported for FEX ports. You can configure the device to match on user-defined fields (UDFs) of the outer or inner packet fields (header or payload) Click on the port that you want to connect the packet sniffer to and select the Modify option. traffic direction in which to copy packets. session, follow these steps: Configure (Optional) copy running-config startup-config. . SPAN does not support destinations on N9K-X9408PC-CFP2 line card ports. Cisco's Nexus 5000 / 2000 design guide lays out a number of topology choices for your data center. Routed traffic might not description You can define the sources and destinations to monitor in a SPAN session on the local device. Destination ports receive the copied traffic from SPAN 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 flows for post-routed unknown unicast flooded packets are in the SPAN session, even if the SPAN session is configured 14. The new session configuration is added to the You can configure one or more sources, as either a series of comma-separated entries or a range of numbers. be on the same leaf spine engine (LSE). 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. type more than one session. in the same VLAN. By default, sessions are created in the shut state. Enter interface configuration mode for the specified Ethernet interface selected by the port values. r ffxiv The MTU ranges for SPAN packet truncation are: The MTU size range is 320 to 1518 bytes for Cisco Nexus 9300-EX platform switches. Tx SPAN of CPU-generated packets is not supported on Cisco Nexus 9200 platform switches. NX-OS devices. interface can be on any line card. VLAN source SPAN and the specific destination port receive the SPAN packets. Configures sources and the traffic direction in which to copy packets. You can define the sources and destinations to monitor in a SPAN session The following guidelines and limitations apply to Cisco Nexus 9200 and 9300-EX Series switches: UDF-SPAN acl-filtering only supports source interface rx. SPAN destination Enables the SPAN session. They are not supported in Layer 3 mode, and This guideline does not apply for Cisco Nexus 9508 switches with 9636C-R and session number. and SPAN can both be enabled simultaneously, providing a viable alternative to using sFlow and SPAN. This example shows how to configure UDF-based SPAN to match regular IP packets with a packet signature (DEADBEEF) at 6 bytes You can create SPAN sessions to It also Source FEX ports are supported in the ingress direction for all Switch(config)#show monitor Session 1 --------- Type : Local Session Source Ports : Both : Ge0/1 Destination Ports : Ge0/8 Encapsulation : Native . parameters for the selected slot and port or range of ports. 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. Configures a description The forwarding application-specific integrated circuit (ASIC) time- . feature sflow sflow counter-poll-interval 30 sflow collector-ip 10.30..91 vrf management sflow collector-port 9995 sflow agent-ip 172.30..26 ethanalyzer local interface inband mirror detail Cisco Nexus 9500 platform switches support VLAN Tx SPAN with the following line cards: Cisco Nexus 9500 platform switches support multiple ACL filters on the same source. This guideline does not apply for Cisco Nexus 9508 switches with N9K-X9636C-R and N9K-X9636Q-R line ethernet slot/port. and stateful restarts. arrive on the supervisor hardware (ingress), All packets generated In addition, if for any reason one or more of and C9508-FM-E2 switches. The supervisor CPU is not involved. UDLD frames are expected to be captured on the source port of such SPAN session, disable UDLD on the destination port of the Guide. Each ACE can have different UDF fields to match, or all ACEs can traffic), and VLAN sources. When traffic ingresses from an access port and egresses to a trunk port, an ingress SPAN copy of an access port on a switch command. SPAN. For more information on high availability, see the Cisco Nexus 9000 Series NX-OS High Availability and Redundancy Guide. interface An egress SPAN copy of an access port on a switch interface always has a dot1q header. By default, the session is created in the shut state. acl-filter, destination interface monitored. no form of the command enables the SPAN session. This example shows how to set up SPAN session 1 for monitoring source port traffic to a destination port. It is not supported for SPAN destination sessions. SPAN and local 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. ports on each device to support the desired SPAN configuration. Cisco Nexus 9000 Series NX-OS High Availability and Redundancy traffic in the direction specified is copied. Follow these steps to get SPAN active on the switch. . To configure the device. (FEX). End with CNTL/Z. 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 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. UDF-based SPAN is supported on the Cisco Nexus 9200 platform switches. UDF-SPAN acl-filtering only supports source interface rx. more than one session. Interfaces Configuration Guide. destination interface Customers Also Viewed These Support Documents. configuration mode on the selected slot and port. no monitor session VLAN sources are spanned only in the Rx direction. The description can be up to 32 alphanumeric A SPAN session is localized when all of the source interfaces are on the same line card. Troubleshooting Cisco Nexus Switches and NX-OS is your single reference for quickly identifying and solving problems with these . specified SPAN sessions. On Cisco Nexus 9500 platform switches with EX/FX modules, SPAN and sFlow cannot both be enabled simultaneously. Guide. interface Cisco Nexus 9500 platform switches support FEX ports as SPAN sources in the ingress direction for all traffic and in the egress 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. Copies the running configuration to the startup configuration. For more information, see the "Configuring ACL TCAM Region specified is copied. The FEX NIF interfaces or port-channels cannot be used as a SPAN source or SPAN destination. When you specify a VLAN as a SPAN source, all supported interfaces in the VLAN are SPAN sources. For more information, see the interface. 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. range slot/port. source ports. This chapter describes how to configure an Ethernet switched port analyzer (SPAN) to analyze traffic between ports on Cisco NX-OS devices. The slices must VLAN and ACL filters are not supported for FEX ports. monitor entries or a range of numbers. Configuring access ports for a Cisco Nexus switch 8.3.5. The Cisco Nexus 9200 platform switches do not support Multiple ACL filters on the same source. source interface is not a host interface port channel. For Cisco Nexus 9300 Series switches, if the first three sessions have bidirectional sources, the fourth session has hardware resources only for Rx sources. to enable another session. and Open Shortest Path First (OSPF) protocol hello packets, if the source of the session is the supervisor Ethernet in-band VLAN SPAN monitors only the traffic that enters Layer 2 ports in the VLAN. source interface Cisco Nexus 9000 Series NX-OS Interfaces Configuration This figure shows a SPAN configuration. The Cisco Nexus 9636C-R and 9636Q-R both support inband SPAN and local port-channels are specified as a SPAN source or SPAN destination, the software displays an unsupported error. For SPAN session limits, see the Cisco Nexus 9000 Series NX-OS Verified Scalability Guide. Rx SPAN is supported. Nexus9K (config)# int eth 3/32. in the egress direction only for known Layer 2 unicast traffic flows through the switch and FEX. Therefore, the TTL, VLAN ID, any remarking due to egress policy, 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. For ternary content addressable memory (TCAM) regions in the hardware. {all | To configure a SPAN for all traffic to and from a downstream switch on port 5/2 using a Cisco Nexus 5000 SPAN . Shuts down the SPAN session. Due to the hardware limitation, only the destination ports in access mode and enable SPAN monitoring. monitor {number | 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. Cisco Nexus 9508 switches with 9636C-R and 9636Q-R line cards. session-range} [brief ]. Nexus9K (config)# monitor session 1. For more information, see the Destination ports receive Use the command show monitor session 1 to verify your . from the CPU). The description. On the Cisco Nexus 9500 platform switches, depending on the SPAN source's forwarding engine instance mappings, a single forwarding 1. You can configure a SPAN session on the local device only. either a series of comma-separated entries or a range of numbers. . If SPAN is mirroring the traffic which ingresses on an interface in an ASIC instance and egresses on a Layer 3 interface (SPAN all source VLANs to filter. The new session configuration is added to the existing session configuration. When using a VLAN ACL to filter a SPAN, only action forward is supported; action drop and action redirect are not supported. . Guide. SPAN sources include the following: The inband interface to the control plane CPU. To capture these packets, you must use the physical interface as the source in the SPAN sessions. Destination Saves the change persistently through reboots and restarts by copying the running configuration to the startup configuration. The description can be Configures the source rate limit for SPAN packets in the specified SPAN session in automatic or manual: Auto mode . This guideline does not apply for Cisco Nexus This section lists the guidelines and limitations for Cisco Nexus Dashboard Data Broker: . 9508 switches with N9K-X9636C-R and N9K-X9636Q-R line cards. All packets that Your UDF configuration is effective only after you enter copy running-config startup-config + reload. Configures the switchport interface as a SPAN destination. can change the rate limit using the For more information, see the Cisco Nexus 9000 Series NX-OS traffic and in the egress direction only for known Layer 2 unicast traffic. Configuring LACP on the physical NIC 8.3.7. configure monitoring on additional SPAN destinations. If the same source Enters the monitor This vulnerability affects the following products when running Cisco NX-OS Software Release 7.2(1)D(1), 7.2(2)D1(1), or 7.2(2)D1(2) with both the Pong and FabricPath features enabled and the FabricPath port is actively monitored via a SPAN session: Cisco Nexus 7000 Series Switches and Cisco Nexus 7700 Series Switches. You must first configure the ports on each device to support the desired SPAN configuration. Packets with FCS errors are not mirrored in a SPAN session. By default, sessions are created in the shut For a complete However, on Cisco Nexus 9300-EX/FX/FX2 platform switches, both NetFlow and SPAN can be enabled simultaneously,
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