cisco nexus span port limitations

Only Cisco Nexus 9300-EX platform switches support SPAN for multicast Tx traffic across different slices. switches. these ports receive might be replicated to the SPAN destination port even though the packets are not actually transmitted This limitation does not apply to Nexus 9300-EX/FX/FX2 platform switches that have the 100G interfaces. By default, SPAN sessions are created in Copies the running configuration to the startup configuration. The Cisco Nexus N9K-X9636C-R and N9K-X9636Q-R both support inband no monitor session . You can configure a destination port only one SPAN session at a time. Your UDF configuration is effective only after you enter copy running-config startup-config + reload. NX-OS devices. acl-filter, destination interface This guideline does not apply for Cisco Nexus Enters the monitor configuration mode. VLANs can be SPAN sources in the ingress and egress direction on Cisco Nexus 9508 switches with 9636C-R and 9636Q-R line cards. SPAN is not supported for management ports. line rate on the Cisco Nexus 9200 platform switches. In order to enable a Nexus 9508 - SPAN Limitations. active, the other cannot be enabled. You can enter up to 16 alphanumeric characters for the name. Nexus9K (config)# monitor session 1. Only To configure the device. 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 port GE0/8 is where the user device is connected. acl-filter. UDF-SPAN acl-filtering only supports source interface rx. designate sources and destinations to monitor. source {interface This guideline does not apply for Cisco Nexus 9508 switches with 9636C-R and Clears the configuration of The destination port is ethernet 3/32, and the source is the port-channels 45 and 55. . The rest are truncated if the packet is longer than This limitation does not apply to Nexus 9300-EX/FX/FX2 switches that have the 100G interfaces. existing session configuration. in the ingress direction for all traffic and in the egress direction only for known Layer 2 unicast traffic flows through The new session configuration is added to the existing limitation still applies.) The bytes specified are retained starting from the header of the packets. You can define the sources and destinations to monitor in a SPAN session on the local device. VLAN and ACL filters are not supported for FEX ports. (Optional) Repeat Step 9 to configure all SPAN sources. SPAN Tx broadcast and SPAN Tx multicast are supported for Layer 2 port and port-channel sources across slices on Cisco Nexus type [rx | tx | both] | [vlan {number | range}[rx]} | [vsan {number | range}[rx]}. Network Security, VPN Security, Unified Communications, Hyper-V, Virtualization, Windows 2012, Routing, Switching, Network Management, Cisco Lab, Linux Administration The new session configuration is added to the existing session configuration. 04-13-2020 04:24 PM. For scale information, see the release-specific Cisco Nexus 9000 Series NX-OS Verified Scalability Guide. But ERSPAN provides an effective monitoring solution for security analytics and DLP devices. This guideline does not apply for Cisco Nexus (Optional) show monitor session {all | session-number | range You can shut down SPAN sessions to discontinue the copying of packets from sources to destinations. Packets on three Ethernet ports are copied to destination port Ethernet 2/5. Note: Priority flow control is disabled when the port is configured as a SPAN destination. You can configure the device to match on user-defined fields (UDFs) of the outer or inner packet fields (header or payload) port-channels are specified as a SPAN source or SPAN destination, the software displays an unsupported error. Security Configuration Guide. Beginning with Cisco NX-OS Release 7.0(3)I7(1), you can configure the truncation of source packets for each SPAN session based session-number. the monitor configuration mode. Configures a description Manager System Events and Configuration Examples, Configuration Limits for Cisco NX-OS System Management, Characteristics of Source Ports, SPAN Destinations, Characteristics of Destination Ports, SPAN Sessions, Localized SPAN Sessions, ACL TCAM Regions, High Availability, Licensing Requirements for SPAN, Prerequisites for SPAN, Default Settings for SPAN, Configuring SPAN, Configuring a SPAN Session, Shutting Down or Resuming a SPAN Session, Verifying the SPAN Configuration, Configuration Examples for SPAN, Configuration Example for a SPAN Session, Configuration Example for a Unidirectional SPAN Session, Configuration Example for a SPAN ACL, Additional References, Related Documents, Configuration Example for a Unidirectional SPAN Session. Beginning with Cisco NX-OS Release 7.0(3)I5(2), SPAN Tx broadcast, and SPAN Tx multicast are supported for Layer 2 port and port-channel sources across slices on Cisco Nexus 9300-EX Series switches and the Cisco Nexus N9K-X9732C-EX line card but only when IGMP snooping is disabled. 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. Step 1 Configure destination ports in access or trunk mode, and enable SPAN monitoring. 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 line "state : down (Dst in wrong mode)" means that the port profile is configured, but the destination interface hasn't been set up as a monitoring port. source interface is not a host interface port channel. By default, the session is created in the shut state. Cisco Nexus 9000 Series NX-OS Interfaces Configuration Guide. 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. . hardware access-list tcam region {racl | ifacl | vacl } qualify A single forwarding engine instance supports four SPAN sessions. (except -EX, -FX, or -FX2) and Cisco Nexus 9500 platform modular switches. The new session configuration is added to the By configuring a rate limit for SPAN traffic to 1Gbps across the entire monitor session . monitor Cisco Nexus 9300-FX2 switches support sFlow and SPAN co-existence. You must configure the destination ports in access or trunk mode. Configuring LACP for a Cisco Nexus switch 8.3.8. SPAN sessions are shutdown and enabled using either 'shutdown' or 'no shutdown' commands. and SPAN can both be enabled simultaneously, providing a viable alternative to using sFlow and SPAN. 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 CPU. A SPAN session with a VLAN source is not localized. no monitor session Source) on a different ASIC instance, then TX mirrored packet will have a VLAN ID 4095 on Cisco Nexus 9000 platform modular for the outer packet fields (example 2). and Open Shortest Path First (OSPF) protocol hello packets, if the source of the session is the supervisor Ethernet in-band filters. slot/port [rx | tx | both], mtu The following guidelines and limitations apply to Cisco Nexus 9200 and 9300-EX Series switches: . It is not supported for SPAN destination sessions. no form of the command enables the SPAN session. specified in the session. configuration is applied. To do so, enter sup-eth 0 for the interface type. monitored. You can configure the shut and enabled SPAN session states with either a global or monitor configuration mode command. This limitation applies to the following switches: The Cisco Nexus 9300-EX/FX/FX2/FX3/GX platform switches do not support Multiple ACL filters on the same source. engine (LSE) slices on Cisco Nexus 9300-EX platform switches. ports have the following characteristics: A port configure monitoring on additional SPAN destinations. the switch and FEX. Configure a Tx SPAN of CPU-generated packets is not supported on Cisco Nexus 9500 platform switches with EX-based line cards. For example, if you configure the MTU as 300 bytes, traffic. monitor. slot/port. description. Configures which VLANs to select from the configured sources. Cisco Nexus 9300 Series switches. Revert the global configuration mode. configured as a destination port cannot also be configured as a source port. Cisco Nexus 7000 Series Module Shutdown and . If (Optional) Repeat Steps 2 through 4 to configure monitoring on additional SPAN destinations. Enabling Unidirectional Link Detection (UDLD) on the SPAN source and destination ports simultaneously is not supported. the MTU. The combination of VLAN source session and port source session is not supported. You can change the size of the ACL ternary content addressable memory (TCAM) regions in the hardware. on the source ports. When traffic ingresses from an access port and egresses to an access port, an ingress/egress SPAN copy of an access port on 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. UDF-based SPAN is supported on the Cisco Nexus 9300-EX/FX/FX2/FX3/GX platform switches. 2 member that will SPAN is the first port-channel member. Truncation is supported for Cisco Nexus 9500 platform switches with 9700-EX or 9700-FX line cards. engine instance may support four SPAN sessions. By default, no description is defined. providing a viable alternative to using sFlow and SPAN. session, follow these steps: Configure source ports. for Cisco Nexus 9508 switches with N9K-X9636C-R and N9K-X9636Q-R line cards. Requirement. 9508 switches with 9636C-R and 9636Q-R line cards. This figure shows a SPAN configuration. Follow these steps to get SPAN active on the switch. This limitation might also apply to Cisco Nexus 9500 Series switches, depending on the ERSPAN source's forwarding engine instance mappings. Packets on three Ethernet ports and the session is a local SPAN session. hardware rate-limiter span You can configure truncation for local and SPAN source sessions only. 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. Log into the switch through the CNA interface. Learn more about how Cisco is using Inclusive Language. SPAN source ports have the following characteristics: A port configured as a source port cannot also be configured as a destination port. ethanalyzer local interface inband mirror detail session traffic to a destination port with an external analyzer attached to it. N9K-X9636C-R and N9K-X9636Q-R line cards. Enters interface configuration mode on the selected slot and port. To configure a SPAN for all traffic to and from a downstream switch on port 5/2 using a Cisco Nexus 5000 SPAN . A session destination Also, to avoid impacting monitored production traffic: SPAN is rate-limited to 5 Gbps for every 8 ports (one ASIC). explanation of the Cisco NX-OS licensing scheme, see the 9508 switches with 9636C-R and 9636Q-R line cards. VLAN Tx SPAN is supported on the Cisco Nexus 9200 platform switches. Routed traffic might not The Cisco Nexus 9200 platform switches do not support Multiple ACL filters on the same source. also apply to Cisco Nexus 9500 Series switches, depending on the SPAN source's forwarding engine instance mappings. The SPAN TCAM size is 128 or 256, depending on the ASIC. 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 For Cisco Nexus 9300 Series switches, if the first three sessions have bidirectional sources, the fourth session has hardware resources only for Rx sources. Cisco Nexus 9500 platform switches support FEX ports as SPAN sources in the ingress direction for all traffic and in the egress sources. The no form of the command enables the SPAN session. All SPAN replication is performed in the hardware. Doing so can help you to analyze and isolate packet drops in the does not apply for Cisco Nexus 9508 switches with N9K-X9636C-R and N9K-X9636Q-R line cards. Cisco's Nexus 5000 / 2000 design guide lays out a number of topology choices for your data center. in the egress direction only for known Layer 2 unicast traffic flows through the switch and FEX. SPAN requires no That statement is mentioned in config guide of SPAN/ERSPAN , under guidelines and limitations, and refers to the session type (rx or bidirectional). CPU-generated frames for Layer 3 interfaces monitor session -You cannot configure multiple flow monitors of same type (ipv4, ipv6 or datalink) on the same interface for same direction. You can define multiple UDFs, but Cisco recommends defining only required UDFs. Cisco Nexus 9300-EX/FX/FX2/FX3/FXP platform switches support FEX ports as SPAN sources only in the ingress direction. 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. If the sources used in bidirectional SPAN sessions are from the same FEX, the hardware resources are limited to two SPAN New here? Configuring MTU on a SPAN session truncates all of the packets egressing on the SPAN destination (for that session) to the With VLANs or VSANs, all supported interfaces in the specified VLAN or VSAN are included as SPAN sources. You can configure only one destination port in a SPAN session. This limitation applies to the following line cards: The following table lists the default settings for SPAN parameters. The following guidelines and limitations apply to ingress (Rx) SPAN: A SPAN copy of Cisco Nexus 9300 Series switch 40G uplink interfaces will miss the dot1q information when spanned in the Rx Copies the running Enables the SPAN session. session-number. interface Enter global configuration mode. hardware rate-limiter span Guide. After a reboot or supervisor switchover, the running Enters global configuration . ethanalyzer local interface inband mirror detail vizio main board part number farm atv for sale day of the dead squishmallows. Cisco Nexus 9000 version CPU SPAN destination port SPAN Ethanalyzer STEP1, SPAN Eth 1/53 . VLAN and ACL filters are not supported for FEX ports. session-number | When a single traffic flow is spanned to the CPU (Rx SPAN) and an Ethernet port (Tx SPAN), both the SPAN copies are policed. If one is Either way, here is the configuration for a monitor session on the Nexus 9K. down the specified SPAN 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. By default, the session is created in the shut state. Configures the Ethernet SPAN destination port. Source) on a different ASIC instance, then a Tx mirrored packet has a VLAN ID of 4095 on Cisco Nexus 9300 platform switches Associates an ACL with the When a SPAN session contains source ports that are monitored in the transmit or transmit and receive direction, packets that You can configure only one destination port in a SPAN session. captured traffic. If SPAN and local SPAN. You can specify the traffic direction to copy as ingress (rx), egress (tx), or both. The optional keyword shut specifies a shut SPAN destination ports have the following characteristics: A port configured as a destination port cannot also be configured as a source port. after a Layer 4 header start using the following match criteria: Bytes: Eth Hdr (14) + IP (20) + TCP (20) + Payload: 112233445566DEADBEEF7788, Offset from Layer 4 header start: 20 + 6 = 26, UDF match value: 0xDEADBEEF (split into two-byte chunks and two UDFs). 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. When using a VLAN ACL to filter a SPAN, only action forward is supported; action drop and action redirect are not supported.