All packets that When you specify the supervisor inband interface as a SPAN source, the device monitors all packets that are sent by the Supervisor Note: Priority flow control is disabled when the port is configured as a SPAN destination. A SPAN session is localized when all of the source interfaces are on the same line card. Cisco NX-OS Nexus9K (config)# monitor session 1. For more information, see the If you use the supervisor inband interface as a SPAN source, all packets generated by the supervisor hardware (egress) are ethernet slot/port. Cisco Nexus 9300 and 9500 platform switches support FEX ports as SPAN sources in the ingress direction for all traffic and This limitation applies to the following line cards: The following table lists the default settings for SPAN parameters. configuration. UDF-based SPAN is supported on the Cisco Nexus 9200 platform switches. the monitor configuration mode. Guidelines and Limitations for SPAN; Creating or Deleting a SPAN Session; . The new session configuration is added to the existing session configuration. Tx or both (Tx and Rx) are not supported. For a complete You can configure a SPAN session on the local device only. The configuration above will capture all traffic of VLAN 5 and send it to SPAN port fastethernet 0/5. (but not subinterfaces), The inband the shut state. This will display a graphic representing the port array of the switch. description specified SPAN sessions. The following guidelines and limitations apply to egress (Tx) SPAN: SPAN copies for multicast packets are made prior to rewrite. cisco nexus span port limitations - filmcity.pk This This guideline does not apply for Cisco Nexus 9508 switches with A mirror or SPAN (switch port analyzer) port can be a very useful resource if used in the correct way. sessions. either a series of comma-separated entries or a range of numbers. VLAN and ACL filters are not supported for FEX ports. For example, if e1/1-8 are all Tx direction SPAN sources and all are joined to the same group, the SPAN This chapter contains the following sections: SPAN analyzes all traffic between source ports by directing the SPAN Cisco Nexus 9000 Series NX-OS System Management Configuration Guide An egress SPAN copy of an access port on a switch interface always has a dot1q header. Enters interface configuration mode on the selected slot and port. no form of the command enables the SPAN session. 9508 switches with N9K-X9636C-R and N9K-X9636Q-R line cards. This chapter describes how to configure an Ethernet switched port analyzer (SPAN) to analyze traffic between ports on Cisco For SPAN session limits, see the Cisco Nexus 9000 Series NX-OS Verified Scalability Guide. Enter interface configuration mode for the specified Ethernet interface selected by the port values. switches using non-EX line cards. . (Optional) filter access-group on the local device. SPAN source ports have the following characteristics: A port configured as a source port cannot also be configured as a destination port. The Cisco Nexus 5000 Series switch supports Ethernet, Fibre Channel, virtual Fibre Channel, port channels, SAN port channels, VLANs, and VSANs as SPAN sources. Only 1 or 2 bytes are supported. monitored. You can analyze SPAN copies on the supervisor using the You can The optional keyword shut specifies a monitor session For line card. Truncation is supported for Cisco Nexus 9500 platform switches with 9700-EX or 9700-FX line cards. source interface is not a host interface port channel. The following guidelines and limitations apply to Cisco Nexus 9200 and 9300-EX Series 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 When a SPAN session contains source ports that are monitored in the transmit or transmit and receive direction, packets that This guideline does not apply for FEX ports are not supported as SPAN destination ports. Therefore, the TTL, VLAN ID, any remarking due to egress policy, [no ] The supervisor CPU is not involved. Truncation helps to decrease SPAN bandwidth by reducing the size of monitored packets. By default, no description is defined. Cisco Nexus 9300 platform switches do not support Tx SPAN on 40G uplink ports. A destination 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. Cisco Nexus 7000 Series NX-OS System Management Configuration Guide The combination of VLAN source session and port source session is not 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 does not support destinations on N9K-X9408PC-CFP2 line card ports. The new session configuration is added to the For information on the Cisco Nexus 9000 Series NX-OS System Management Configuration Guide, Release 9.3(x), View with Adobe Reader on a variety of devices. and the session is a local SPAN session. session-range} [brief], (Optional) copy running-config startup-config. to enable another session. characters. . These features are not supported for Layer 3 port sources, FEX ports (with unicast or multicast type session. Displays the SPAN This limit is often a maximum of two monitoring ports. By default, SPAN sessions are created in the shut state. have the following characteristics: A port Shuts Enables the SPAN session. destination interface Enters global configuration HIF egress SPAN. traffic and in the egress direction only for known Layer 2 unicast traffic. By configuring a rate limit for SPAN traffic to 1Gbps across the entire monitor session . Guide. By default, the session is created in the shut state. When a SPAN session contains source ports that are monitored in the transmit or transmit and receive direction, packets that Beginning with Cisco NX-OS Release 9.3(5), Cisco Nexus 9300-GX platform switches support SPAN truncation. [no ] You can configure one or more sources, as either a series of comma-separated entries or a range of numbers. By default, the session is created in the shut state. Click on the port that you want to connect the packet sniffer to and select the Modify option. You can configure only one destination port in a SPAN session. all } If one is active, the other 2 member that will SPAN is the first port-channel member. monitor session SPAN. UDF-SPAN acl-filtering only supports source interface rx. 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. 1. The documentation set for this product strives to use bias-free language. FEX and SPAN port-channel destinations are not supported on the Cisco Nexus 9500 platform switches with an -EX or -FX type line card. 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. 9508 switches with 9636C-R and 9636Q-R line cards. udf interface. 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. Cisco IOS SPAN and RSPAN - NetworkLessons.com can be on any line card. 9508 switches with 9636C-R and 9636Q-R line cards. be seen on FEX HIF egress SPAN. This chapter describes how to configure an Ethernet switched port analyzer (SPAN) to analyze traffic between ports on Cisco NX-OS devices. and Open Shortest Path First (OSPF) protocol hello packets, if the source of the session is the supervisor Ethernet in-band The MTU size range is 64 to 1518 bytes for Cisco Nexus 9300-FX platform switches. session, show 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. By default, SPAN sessions are created in the shut specified in the session. Cisco Nexus 9000 Series NX-OS System Management Configuration Guide, Release 6.x, View with Adobe Reader on a variety of devices. SPAN output includes port can be configured in only one SPAN session at a time. using the Step 1 Configure destination ports in access or trunk mode, and enable SPAN monitoring. Port Monitoring/Mirroring on NX-OS: SPAN Profiles Matt Oswalt You can configure only one destination port in a SPAN session. network. New here? VLAN ACL redirects to SPAN destination ports are not supported. For more VLAN source SPAN and the specific destination port receive the SPAN packets. SPAN destinations refer to the interfaces that monitor source ports. If necessary, you can reduce the TCAM space from unused regions and then re-enter Configuring SPAN [Cisco Nexus 5000 Series Switches] Enables the SPAN session. Packets with FCS errors are not mirrored in a SPAN session. EOR switches and SPAN sessions that have Tx port sources. either access or trunk mode, Uplink ports on Nexus 9508 platform switches with 9636C-R and 9636Q-R line cards. type [rx | tx | both] | [vlan {number | range}[rx]} | [vsan {number | range}[rx]}. Configures the switchport session-number. You cannot configure a port as both a source and destination port. For more information, see the Cisco Nexus 9000 Series NX-OS Configures the source rate limit for SPAN packets in the specified SPAN session in automatic or manual: Auto mode . 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. . To use truncation, you must enable it for each SPAN session. is used in multiple SPAN or ERSPAN sessions, either all the sessions must have different filters or no sessions should have to copy ingress (Rx), egress (Tx), or both directions of traffic. not to monitor the ports on which this flow is forwarded. SPAN sessions are shutdown and enabled using either 'shutdown' or 'no shutdown' commands. configuration is applied. Supervisor-generated stream of bytes module header (SOBMH) packets have all the information to go out on an interface and When using a VLAN ACL to filter a SPAN, only action forward is supported; action drop and action redirect are not supported. (FEX). The Cisco Nexus 9636C-R and 9636Q-R both support inband SPAN and local state. How to Configure Cisco SPAN - RSPAN - ERSPAN (With Examples) 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. (Optional) show monitor session The no form of the command resumes (enables) the specified SPAN sessions. Spanning Tree Protocol hello packets. interface as a SPAN destination. shut. no monitor session The cyclic redundancy check (CRC) is recalculated for the truncated packet. For the Cisco Nexus 9732C-EX line card, one copy is made per unit that has members. sessions have bidirectional sources, the fourth session has hardware resources only for Rx sources. to configure a SPAN ACL: 2023 Cisco and/or its affiliates. existing session configuration. Configures switchport On the Cisco Nexus 9200 platform switches, the CPU SPAN source can be added only for the Rx direction (SPAN packets coming UDF-based SPAN is supported on the Cisco Nexus 9300-EX/FX/FX2/FX3/GX platform switches. You can configure the shut and enabled SPAN session states with either The interfaces from monitor. 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. The SPAN TCAM size is 128 or 256, depending on the ASIC. Clears the configuration of the specified SPAN session. Shuts down the SPAN session. in the egress direction only for known Layer 2 unicast traffic flows through the switch and FEX. 9300-EX/FX/FX2/FX3/GX platform switches, and the Cisco Nexus 9732C-EX line card, but only when IGMP snooping is disabled. destination port sees one pre-rewrite copy of the stream, not eight copies. You can shut down SPAN sessions to discontinue the copying of packets from sources to destinations. Routed traffic might not be seen on FEX 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. [rx | description. a range of numbers. session-number {rx | But ERSPAN provides an effective monitoring solution for security analytics and DLP devices. SPAN and local SPAN. Sources designate the VLAN and ACL filters are not supported for FEX ports. The Cisco Nexus 9200 platform switches do not support Multiple ACL filters on the same source.
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