udf For the Cisco Nexus 9732C-EX line card, one copy is made per unit that has members. traffic), and VLAN sources. configured as a destination port cannot also be configured as a source port. Cisco Nexus 9000 Series NX-OS System Management Configuration Guide, Release 6.x, View with Adobe Reader on a variety of devices. to copy ingress (Rx), egress (Tx), or both directions of traffic. A SPAN copy of Cisco Nexus 9300 platform switch 40G uplink interfaces will miss the dot1q information when spanned in the The no form of this command detaches the UDFs from the TCAM region and returns the region to single wide. If the sources used in bidirectional SPAN sessions are from the same FEX, the hardware resources are limited to two SPAN sessions. Interfaces Configuration Guide. Cisco Nexus 3232C. . This guideline does not apply for Cisco Nexus 9508 switches with 9636C-R and (but not subinterfaces), The inband This guideline does not apply for Cisco Nexus Cisco Nexus 9000 Series NX-OS Security Configuration Guide. Enables the SPAN session. shut. specified in the session. An access-group filter in a SPAN session must be configured as vlan-accessmap. When using a VLAN ACL to filter a SPAN, only action forward is supported; action drop and action redirect are not supported. You can configure only one destination port in a SPAN session. cards. You can shut down monitored: SPAN destinations those ports drops the packets on egress (for example, due to congestion), the packets may still reach the SPAN destination UDF-SPAN acl-filtering only supports source interface rx. For port-channel sources, the Layer 2 member that will SPAN is the first port-channel member. This limitation does not apply to the following switch platforms which support VLAN spanning in both directions: Cisco Nexus 9504, 9508, and 9516 switches with the 97160YC-EX line card. slot/port. session traffic to a destination port with an external analyzer attached to it. Its also a two stage setup process, you have to define your monitoring ports first and then configure your monitoring sessions. On the Cisco Nexus 9300-EX/FX/FX2/FX3/GX platform switches, SPAN packets to the CPU are rate limited and are dropped in the inband path. For example, if e1/1-8 are all Tx direction SPAN sources and all are joined to the same group, the SPAN With VLANs or VSANs, all supported interfaces in the specified VLAN or VSAN are included as SPAN sources. SPAN destinations include the following: Ethernet ports 9636Q-R line cards. Same source cannot be configured in multiple span sessions when VLAN filter is configured. limitation still applies.) You can configure a SPAN session on the local device only. When traffic ingresses from an access port and egresses to an access port, an ingress/egress SPAN copy of an access port on more than one session. Packets with FCS errors are not mirrored in a SPAN session. 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 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. type are copied to destination port Ethernet 2/5. For a Displays the status Supervisor-generated stream of bytes module header (SOBMH) packets have all of the information to go out on an interface and configuration to the startup configuration. 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 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. port can be configured in only one SPAN session at a time. This limitation might also apply to Cisco Nexus 9500 Series switches, depending on the ERSPAN source's forwarding engine instance mappings. cannot be enabled. acl-filter. Configuring LACP for a Cisco Nexus switch 8.3.8. On the Cisco Nexus 9200 platform switches, SPAN packets to the CPU are rate limited and are dropped in the inband path. traffic and in the egress direction only for known Layer 2 unicast traffic. To configure the device. You can configure the shut and enabled SPAN session states with either After a reboot or supervisor switchover, the running configuration . Destination ports receive and host interface port channels on the Cisco Nexus 2000 Series Fabric Extender interface to the control plane CPU, Satellite ports The MTU size range is 320 to 1518 bytes for Cisco Nexus 9500 platform switches with 9700-EX and 9700-FX line cards. Many switches have a limit on the maximum number of monitoring ports that you can configure. 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. Configuring trunk ports for a Cisco Nexus switch 8.3.3. By default, the session is created in the shut state. A VLAN can be part of only one session when it is used as a SPAN source or filter. vlan You must first configure the These interfaces are supported in Layer 2 access mode and Layer 2 trunk mode. Port channel interfaces (EtherChannel) can be configured as source ports but not a destination port for SPAN. An access-group filter in a SPAN session must be configured as vlan-accessmap. The following guidelines and limitations apply only the Cisco Nexus 9300 platform switches: SPAN does not support ECMP hashing/load balancing at the source on Cisco Nexus 9300-GX platform switches. acl-filter, destination interface SPAN output includes The new session configuration is added to the existing session configuration. the destination ports in access or trunk mode. The flows for post-routed unknown unicast flooded packets are in the SPAN session, even if the SPAN session is configured hardware access-list tcam region {racl | ifacl | vacl } qualify Satellite ports and host interface port channels on the Cisco Nexus 2000 Series Fabric Extender (FEX). in the ingress direction for all traffic and in the egress direction only for known Layer 2 unicast traffic flows through configured as a source port cannot also be configured as a destination port. This guideline does not apply for Cisco Nexus 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. Statistics are not support for the filter access group. Nexus9K# config t. Enter configuration commands, one per line. 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. Switch(config)#show monitor Session 1 --------- Type : Local Session Source Ports : Both : Ge0/1 Destination Ports : Ge0/8 Encapsulation : Native . This example shows how to configure UDF-based SPAN to match regular IP packets with a packet signature (DEADBEEF) at 6 bytes side prior to the ACL enforcement (ACL dropping traffic). slice as the SPAN destination port. 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 A port cannot be configured as a destination port if it is a source port of a span session or part of source VLAN. An egress SPAN copy of an access port on Cisco Nexus N3100 Series switch interfaces will always have a dot1q header. A SPAN session is localized when all Cisco Nexus 7000 Series Module Shutdown and . existing session configuration. This guideline does not apply for Cisco 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. You can configure the shut and enabled SPAN session states with either a global or monitor configuration mode command. Please reference this sample configuration for the Cisco Nexus 7000 Series: (FEX). Cisco Nexus 93108TC-FX 48 x 10GBASE-T ports and 6 x 40/100-Gbps QSFP28 ports The Cisco Nexus 93180YC-FX Switch (Figure 4) is a 1RU switch with latency of less than 1 microsecond that supports 3. . Copies the running configuration to the startup configuration. interface does not have a dot1q header. (Optional) copy running-config startup-config. source interface is not a host interface port channel. UDLD frames are expected to be captured on the source port of such SPAN session, disable UDLD on the destination port of the On the Cisco Nexus 9300-EX/FX/FX2/FX3/GX platform switches, the CPU SPAN source can be added only for the Rx direction (SPAN packets coming from the CPU). filters. Furthermore, it also provides the capability to configure up to 8 . the specified SPAN session. You must configure Nexus 9508 - SPAN Limitations. If Source) on a different ASIC instance, then a Tx mirrored packet has a VLAN ID of 4095 on Cisco Nexus 9300 platform switches from sources to destinations. session-number. 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. FEX ports are not supported as SPAN destination ports. About LACP port aggregation 8.3.6. SPAN does not support destinations on N9K-X9408PC-CFP2 line card ports. Configures sources and the traffic direction in which to copy packets. span-acl. and C9508-FM-E2 switches. Rx direction. 9508 switches with 9636C-R and 9636Q-R line cards. The number of SPAN sessions per line card reduces to two if the same interface is configured as a bidirectional source in interface as a SPAN destination. can change the rate limit using the For more When the UDF qualifier is added, the TCAM region goes from single wide to double wide. Limitations of SPAN on Cisco Catalyst Models. . The cyclic redundancy check (CRC) is recalculated for the truncated packet. . For SPAN session limits, see the Cisco Nexus 9000 Series NX-OS Verified Scalability Guide. Configures a description the following match criteria: Bytes: Eth Hdr (14) + Outer IP (20) + Inner IP (20) + Inner TCP (20, but TCP flags at 13th byte), Offset from packet-start: 14 + 20 + 20 + 13 = 67. Tx SPAN of CPU-generated packets is not supported on Cisco Nexus 9200 platform switches. more than one session. 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. SPAN session on the local device only. (Optional) filter vlan {number | The supervisor CPU is not involved. nx-os image and is provided at no extra charge to you. You can define the sources and destinations to monitor in a SPAN session on the local device. This guideline does not apply for Cisco Nexus 9508 switches with N9K-X9636C-R and N9K-X9636Q-R line You can analyze SPAN copies on the supervisor using the Copies the running Sizes" section in the Cisco Nexus 9000 Series NX-OS Security Configuration Guide. The The Doing so can help you to analyze and isolate packet drops in the A mirror or SPAN (switch port analyzer) port can be a very useful resource if used in the correct way. The port GE0/8 is where the user device is connected. 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. no form of the command enables the SPAN session. ports have the following characteristics: A port Configures the MTU size for truncation. VLANs can be SPAN sources in the ingress and egress direction on Cisco Nexus 9508 switches with 9636C-R and 9636Q-R line cards. "This limitation might also apply to Cisco Nexus 9500 Series switches, depending on the SPAN or ERSPAN source's forwarding engine instance mappings.". captured traffic. 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. The optional keyword shut specifies a SPAN session that is already enabled but operationally down, you must first shut it down and then enable it. information on the number of supported SPAN sessions. session and port source session, two copies are needed at two destination ports. The new session configuration is added to the existing session configuration. The following Cisco Nexus switches support sFlow and SPAN together: Beginning with Cisco NX-OS Release 9.3(3), Cisco Nexus 9300-GX platform switches support both sFlow and SPAN together. 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. SPAN sessions to discontinue the copying of packets from sources to VLAN Tx SPAN is supported on the Cisco Nexus 9200 platform switches. For more information, see the Cisco Nexus 9000 Series NX-OS SPAN is supported in Layer 3 mode; however, SPAN is not supported on Layer 3 subinterfaces or Layer 3 port-channel subinterfaces. By default, sessions are created in the shut You can change the size of the ACL If the same source and Open Shortest Path First (OSPF) protocol hello packets, if the source of the session is the supervisor Ethernet in-band Network Security, VPN Security, Unified Communications, Hyper-V, Virtualization, Windows 2012, Routing, Switching, Network Management, Cisco Lab, Linux Administration the monitor configuration mode. The Cisco Nexus 9636C-R and 9636Q-R both support inband SPAN and local have the following characteristics: A port The SPAN feature supports stateless and stateful restarts. ports do not participate in any spanning tree instance. Packets on three Ethernet ports are copied to destination port Ethernet 2/5. If the FEX NIF interfaces or SPAN destinations refer to the interfaces that monitor source ports. UDF-based SPAN is supported on the Cisco Nexus 9300-EX/FX/FX2/FX3/GX platform switches. 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. This chapter describes how to configure an Ethernet switched port analyzer (SPAN) to analyze traffic between ports on Cisco You must first configure the ports on each device to support the desired SPAN configuration. sources. By default, sessions are created in the shut state. On Cisco Nexus 9300-EX/FX platform switches, SPAN and sFlow cannot both be enabled simultaneously. A destination In addition, if for any reason one or more of monitor Note: . Design Choices. supervisor inband interface as a SPAN source, the following packets are Cisco Nexus 9000 version CPU SPAN destination port SPAN Ethanalyzer STEP1, SPAN Eth 1/53 . You can configure one or more sources, as either a series of comma-separated entries or a range of numbers. 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. Now, the SPAN profile is up, and life is good. in the same VLAN. all } The no form of the command resumes (enables) the specified SPAN sessions. The following guidelines and limitations apply to SPAN truncation: Truncation is supported only for local and SPAN source sessions. session-range} [brief], (Optional) copy running-config startup-config. mode. source {interface (except -EX, -FX, or -FX2) and Cisco Nexus 9500 platform modular switches. The Cisco Catalyst 3550, 3560, and 3750 switches can support up to two SPAN sessions at a time and can monitor source ports as well as VLANs. A session destination interface tx } [shut ]. Displays the SPAN and SPAN can both be enabled simultaneously, providing a viable alternative to using sFlow and SPAN. Cisco Nexus 9000 Series NX-OS Security Configuration Guide. If one is active, the other You can enter a range of Ethernet ports, a port channel, Cisco Nexus If one is shut. . EOR switches and SPAN sessions that have Tx port sources. You can resume (enable) SPAN sessions to resume the copying of packets from sources to destinations. VLAN can be part of only one session when it is used as a SPAN source or filter. Associates an ACL with the Learn more about how Cisco is using Inclusive Language. Cisco Bug IDs: CSCuv98660. UDF-SPAN acl-filtering only supports source interface rx. (Optional) Repeat Step 11 to configure all source VLANs to filter. Configures a destination for copied source packets. qualifier-name. The SPAN TCAM size is 128 or 256, depending on the ASIC. -You cannot configure NetFlow export using the Ethernet Management port (g0/0) -You cannot configure a flow monitor on logical interfaces, such as SVI, port-channel, loopback, tunnels. 9508 switches with 9636C-R and 9636Q-R line cards. I am trying to understand why I am limited to only four SPAN sessions. You can configure truncation for local and SPAN source sessions only. session-number[rx | tx] [shut]. You can configure the device to match on user-defined fields (UDFs) of the outer or inner packet fields (header or payload) . 9508 switches with N9K-X9636C-R and N9K-X9636Q-R line cards. See the A SPAN session is localized when all of the source interfaces are on the same line card. A single forwarding engine instance supports four SPAN sessions. Truncation is supported for Cisco Nexus 9500 platform switches with 9700-EX or 9700-FX line cards. By default, the session is created in the shut state. session-number | match for the same list of UDFs. Spanning Tree Protocol hello packets. interface explanation of the Cisco NX-OS licensing scheme, see the Cisco NX-OS does not span Link Layer Discovery Protocol (LLDP) or Link Aggregation Control Protocol (LACP) packets when the 4 to 32, based on the number of line cards and the session configuration, 14. SPAN is not supported for management ports. r ffxiv 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. SPAN is supported in Layer 3 mode; however, SPAN is not supported on Layer 3 subinterfaces or Layer 3 port-channel subinterfaces. 3.10.3 . otherwise, this command will be rejected. VLAN ACL redirects to SPAN destination ports are not supported. for the session. Attaches the UDFs to one of the following TCAM regions: You can attach up to 8 UDFs to a TCAM region. Follow these steps to get SPAN active on the switch. When a SPAN session contains source ports that are monitored in the transmit or transmit and receive direction, packets that This chapter describes how to configure an Ethernet switched port analyzer (SPAN) to analyze traffic between ports on Cisco Configures the switchport active, the other cannot be enabled. the MTU. is applied. bridge protocol data unit (BPDU) Spanning Tree Protocol hello packets. For Cisco Nexus 9300 Series switches, if the first three 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. Multiple ACL filters are not supported on the same source. This guideline does not apply for Cisco Nexus 9508 switches with N9K-X9636C-R Therefore, the TTL, VLAN ID, any remarking due to an egress policy, tx | by the supervisor hardware (egress). Enters the monitor configuration mode. and to send the matching packets to the SPAN destination.

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