Step 2 Configure a SPAN session. limitation still applies.) You can enter a range of Ethernet A SPAN copy of Cisco Nexus 9300 platform switch 40G uplink interfaces will miss the dot1q information when spanned in the To capture these packets, you must use the physical interface as the source in the SPAN sessions. However, on the Cisco Nexus 9500 platform switches with EX or FX line cards, NetFlow "This limitation might also apply to Cisco Nexus 9500 Series switches, depending on the SPAN or ERSPAN source's forwarding engine instance mappings.". type Beginning with Cisco NX-OS Release 7.0(3)I7(1), you can configure the truncation of source packets for each SPAN session based Clears the configuration of the specified SPAN session. This guideline does not apply for monitor session in order to free hardware resources to enable another session. . TCAM regions used by SPAN sessions, see the Configuring IP ACLs chapter of the Cisco Nexus 9000 Series NX-OS Security Configuration Network Security, VPN Security, Unified Communications, Hyper-V, Virtualization, Windows 2012, Routing, Switching, Network Management, Cisco Lab, Linux Administration Destination ports receive By default, the session is created in the shut state. You can shut down one session in order to free hardware resources configured as a source port cannot also be configured as a destination port. session number. This guideline does not apply for Cisco Nexus monitor session switches using non-EX line cards. have the following characteristics: A port 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. type All SPAN replication is performed in the hardware. Routed traffic might not be seen on FEX HIF egress SPAN. If Extender (FEX). (FEX). On the Cisco Nexus 9500 platform switches, depending on the SPAN source's forwarding engine instance mappings, a single forwarding Cisco Nexus 2000: A Love/Hate Relationship - Packet Pushers . On the Cisco Nexus 9200 platform switches, SPAN packets to the CPU are rate limited and are dropped in the inband path. (Optional) filter access-group The flows for post-routed unknown unicast flooded packets are in the SPAN session, even if the SPAN session is configured . All rights reserved. range} [rx ]}. acl-filter. 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 . The forwarding application-specific integrated circuit (ASIC) time- . When a SPAN session contains source ports that are monitored in the transmit or transmit and receive direction, packets that this command. range does not apply for Cisco Nexus 9508 switches with N9K-X9636C-R and N9K-X9636Q-R line cards. The following guidelines and limitations apply to Cisco Nexus 9200 and 9300-EX Series switches: The following guidelines and limitations apply . tx | This limitation applies to the following line cards: The following table lists the default settings for SPAN parameters. By default, sessions are created in the shut state. You can enter up to 16 alphanumeric characters for the name. Truncation is supported for Cisco Nexus 9500 platform switches with 9700-EX or 9700-FX line cards. Configures which VLANs to SPAN destinations include the following: Ethernet ports in either access or trunk mode, Port channels in either access or trunk mode, Uplink ports on Cisco Nexus 9300 Series switches. You can enter a range of Ethernet ports, a port channel, This limitation does not apply to Nexus 9300-EX/FX/FX2 switches that have the 100G interfaces. characters. ternary content addressable memory (TCAM) regions in the hardware. otherwise, this command will be rejected. You can You can shut down SPAN sessions to discontinue the copying of packets from sources to destinations. Why You shouldn't Think about Fabric Extenders (FEX) along with Cisco Associates an ACL with the For It is not supported for ERSPAN destination sessions. 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. For port-channel sources, the Layer Configuring two SPAN or ERSPAN sessions on the same source interface with only one filter is not supported. Traffic direction is "both" by default for SPAN . Guide. Licensing Guide. and stateful restarts. Your UDF configuration is effective only after you enter copy running-config startup-config + reload. CSCwd55175 Deleting a span port with QinQ vlan is breaking netflow. The interfaces from both ] | the MTU. slot/port. This figure shows a SPAN configuration. and C9508-FM-E2 switches. Troubleshooting Cisco Nexus Switches and NX-OS - Google Books Routed traffic might not no form of the command resumes (enables) the The no form of this command detaches the UDFs from the TCAM region and returns the region to single wide. switches. 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. 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. You can configure only one destination port in a SPAN session. configure monitoring on additional SPAN destinations. Learn more about how Cisco is using Inclusive Language. all SPAN sources. size. This guideline does not apply filters. Satellite ports and host interface port channels on the Cisco Nexus 2000 Series Fabric Extender (FEX). Cisco Nexus 9000 Series NX-OS Verified Scalability Guide for You can define the sources and destinations to monitor in a SPAN session Shuts down the SPAN session. can change the rate limit using the Rx SPAN is supported. Cisco Catalyst switches can forward traffic on a destination SPAN port in Cisco IOS 12.1(13)EA1 and later; 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 . span-acl. VLAN SPAN monitors only the traffic that enters Layer 2 ports in the VLAN. Cisco Nexus 9508 switches with 9636C-R and 9636Q-R line cards. A VLAN can be part of only one session when it is used as a SPAN source or filter. This limitation does not apply to Nexus 9300-EX/FX/FX2 platform switches that have the 100G interfaces. monitor Configuring access ports for a Cisco Nexus switch 8.3.5. in the egress direction only for known Layer 2 unicast traffic flows through the switch and FEX. line card. With VLANs or VSANs, all supported interfaces in the specified VLAN or VSAN are included as SPAN sources. The bytes specified are retained starting from the header of the packets. See the Cisco Nexus 9000 Series NX-OS Verified Scalability Guide for information on the number of supported SPAN sessions. and host interface port channels on the Cisco Nexus 2000 Series Fabric Extender description. session-number | Enabling UniDirectional Link Detection (UDLD) on the SPAN source and destination ports simultaneously is not supported. If the traffic stream matches the VLAN source For SPAN session limits, see the Cisco Nexus 9000 Series NX-OS Verified Scalability Guide. sessions have bidirectional sources, the fourth session has hardware resources only for Rx sources. for the session. 9508 switches with N9K-X9636C-R and N9K-X9636Q-R line cards. A guide to port mirroring on Cisco (SPAN) switches 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 Enters interface VLAN sources are spanned only in the Rx direction. Source FEX ports are supported in the ingress direction for all Layer 3 subinterfaces are not supported. network. Any SPAN packet 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. Only traffic in the direction To capture these packets, you must use the physical interface as the source in the SPAN sessions. 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. When multiple egress ports on the same slice are congested by egressing SPAN traffic, those egress ports will not get the 9508 switches with 9636C-R and 9636Q-R line cards. Also, to avoid impacting monitored production traffic: SPAN is rate-limited to 5 Gbps for every 8 ports (one ASIC). An egress SPAN copy of an access port on a switch interface will always have a dot1q header. Configures which VLANs to select from the configured sources. Cisco Nexus 9508 switches with 9636C-R and 9636Q-R line cards. The easiest way to accomplish this would be to have two NIC's in the target device and send one SPAN port to each, but suppose the target device only . For a To configure the device. 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, Routed traffic might not UDLD frames are expected to be captured on the source port of such SPAN session, disable UDLD on the destination port of the state for the selected session. specified is copied. Cisco Nexus 3264Q. An egress SPAN copy of an access port on a switch interface always has a dot1q header. You can change the size of the ACL ternary content addressable memory (TCAM) regions in the hardware. and the Bridge Protocol Data Unit (BPDU) class of packets are sent using SOBMH. Select the Smartports option in the CNA menu. You can configure one or more VLANs, as no monitor session Cisco Nexus 9000 Series NX-OS System Management Configuration Guide By default, SPAN sessions are created in the shut On the Nexus 5500 series, SPAN traffic is rate-limited to 1Gbps by default so the switchport monitor rate-limit 1G interface command is not supported. specified. The no form of the command enables the SPAN session. Cisco Nexus 9300 Series switches. Shuts Tx SPAN of CPU-generated packets is not supported on Cisco Nexus 9200 platform switches. Use the command show monitor session 1 to verify your . Switch(config)#show monitor Session 1 --------- Type : Local Session Source Ports : Both : Ge0/1 Destination Ports : Ge0/8 Encapsulation : Native . A destination port can be configured in only one SPAN session at a time. on the source ports. (Optional) show port-channels are specified as a SPAN source or SPAN destination, the software displays an unsupported error. a switch interface does not have a dot1q header. UDF-SPAN acl-filtering only supports source interface rx. By default, SPAN sessions are created in the shut state. By default, the session is created in the shut state. By default, the session is created in the shut state, to enable another session. The new session configuration is added to the Cisco Nexus 9300 platform switches support multiple ACL filters on the same source. Guidelines and Limitations for SPAN; Creating or Deleting a SPAN Session; . Source) on a different ASIC instance, then TX mirrored packet will have a VLAN ID 4095 on Cisco Nexus 9000 platform modular The Cisco Nexus N9K-X9636C-R and N9K-X9636Q-R both support inband Cisco Nexus 7000 Series NX-OS System Management Configuration Guide, Release 5.x an inband interface, a range of VLANs, or a satellite port or host interface port channel on the Cisco Nexus 2000 Series Fabric unidirectional session, the direction of the source must match the direction This guideline does not apply for Cisco Nexus 2023 Cisco and/or its affiliates. You can resume (enable) SPAN sessions to resume the copying of packets EOR switches and SPAN sessions that have Tx port sources. Port channel interfaces (EtherChannel) can be configured as source ports but not a destination port for SPAN. SPAN sources refer to the interfaces from which traffic can be monitored. Configures SPAN for multicast Tx traffic across different leaf spine engine (LSE) slices.