Unlike a trap, which is discarded as soon as it is sent, an inform request must be held in memory until a response is received or the request times out. Set the security violation shutdown mode. Use the no form of this command to return to the default setting. switchport mode { access | dynamic { auto | desirable } | trunk }, no switchport mode { access | dynamic | trunk }. Use the no form of this command to return to the default setting. If the speed is set to auto, the switch negotiates with the device at the other end of the link for the speed setting and then forces the speed setting to the negotiated value. Use the no form of this command to return to the default setting. To optimize the port for a host connection, the switchport host command sets switch port mode to access, enables spanning tree Port Fast, and disables channel grouping. This is enabled by default. Use the no form of this command to remove the settings or to return to the default settings. The switch sends every new MAC address received to the VMPS server to get the VLAN name to which the dynamic-access port should be assigned. Use the keywords to configure secure MAC addresses, sticky MAC address learning, a maximum number of secure MAC addresses, or the violation mode. You can specify a single VLAN identified by VLAN ID number, a range of VLANs separated by a hyphen, or a series of VLANs separated by a comma. Use the speed interface configuration command to specify the speed of a 10/100 Mb/s or 10/100/1000 Mb/s port. You configure the recovery time by using the errdisable recovery interval interval global configuration command. When you enter the spanning-tree vlan vlan-id root secondary command, because of support for the extended system ID, the software changes the switch priority from the default value (32768) to 28672. In this example, if interface Gi0/6 goes down, Gi0/8 carries all VLANs of the Flex Link pair. The range is 0 to 61440 in increments of 4096. The port is a trunking VLAN Layer 2 interface. Displays information about the switch stack and its stack members. If you set the max-update-rate to 0, station-learning frames are not generated, so the spanning-tree topology converges more slowly after a loss of connectivity. Catalyst 2960 PoE-capable switch ports automatically supply power to these connected devices if the switch senses that there is no power on the circuit: • Cisco prestandard powered devices (such as Cisco IP Phones and Cisco Aironet access points) • IEEE 802.3af-compliant powered devices Set the system jumbo MTU for Gigabit Ethernet ports operating at 1000 Mb/s or greater. This example shows how to display the Layer 2 path by specifying the source and destination MAC addresses: This example shows how to display the Layer 2 path by using the detail keyword: This example shows how to display the Layer 2 path by specifying the interfaces on the source and destination switches: This example shows the Layer 2 path when the switch is not connected to the source switch: This example shows the Layer 2 path when the switch cannot find the destination port for the source MAC address: This example shows the Layer 2 path when the source and destination devices are in different VLANs: This example shows the Layer 2 path when the destination MAC address is a multicast address: This example shows the Layer 2 path when source and destination switches belong to multiple VLANs: Displays the Layer 2 path taken by the packets from the specified source IP address or hostname to the specified destination IP address or hostname. The primary root switch priority is 24576. Configures a port as a static-access or dynamic-access port. Sets the switch priority for the specified spanning-tree instance. Use the no form of this command to return to the default settings. The VMPS server treats the cluster as a single switch and uses the IP address of the command switch to respond to requests. Enables the timer to recover from the EtherChannel misconfiguration error-disabled state. Specify the VTP device mode as client, server, or transparent. The instance-id range changed to 1 to 4094. For more information, see the software configuration guide for this release. Note This command is supported only on Catalyst 2960-S switches running the LAN base image. Unknown multicast and unicast traffic is not blocked. Set the list of VLANs that are eligible for VTP pruning when in trunking mode. The range is 1500 to 1998 bytes. Primary server status is lost if the device reloads or domain parameters change. Use the show running-config privileged EXEC command to display the configured lists of authentication methods. All other values are rejected. This example shows how to configure VLAN 3 as the default for the port to send all untagged traffic: This example shows how to add VLANs 1, 2, 5, and 6 to the allowed list: This example shows how to remove VLANs 3 and 10 to 15 from the pruning-eligible list: You can verify your settings by entering the show interfaces interface-id switchport privileged EXEC command. Use the switchport nonegotiate interface configuration command to specify that Dynamic Trunking Protocol (DTP) negotiation packets are not sent on the Layer 2 interface. All stack members run the same version of spanning-tree. Use the no form of this command to return to the default setting. This removes the secure address when it become inactive, and other addresses can become secure. Loop guard is configured according to the spanning-tree loopguard default global configuration command (globally disabled). Set absolute aging type. Defines a policer for classified traffic. (Optional) Enable SNMP traps. Avoid using the @ symbol as part of the SNMP community string when configuring this command. The switch stack displays a message when it applies the default configuration. All data traffic passing between protected ports must be forwarded through a Layer 3 device. show interfaces interface-id switchport. Use the no form of the command to disable aggressive or normal mode UDLD on all fiber-optic ports. This example shows how to reset all interfaces disabled by UDLD: You can verify your setting by entering the show udld privileged EXEC command. In shaped mode, the queues are guaranteed a percentage of the bandwidth, and they are rate-limited to that amount. No preemption occurs. snmp-server host myhost.cisco.com comaccess snmp, global configuration command to prevent alternate or root ports from becoming designated ports because of a failure that leads to a unidirectional link. Specify that VLANs are carried on the backup interfaces of a Flex Link pair. Loop guard prevents alternate or root ports from becoming designated ports when a failure creates a unidirectional link. When persistent MAC address is enabled, the stack MAC address does not change for a time period. Number from 0 to 240, in increments of 16. When you enter the copy running-config startup-config privileged EXEC command, the provisioned configuration is saved in the startup configuration file of the switch stack. spanning-tree portfast (interface configuration). This example shows how to configure the weight ratio of the SRR scheduler running on an egress port. Assign lower cost values to interfaces that you want selected first and higher cost values to interfaces that you want selected last. Use the no form of this command to return to the udld global configuration command setting or to disable UDLD if entered for a nonfiber-optic port. This example shows how to enter MST configuration mode, map VLANs 10 to 20 to MST instance 1, name the region region1, set the configuration revision to 1, display the pending configuration, apply the changes, and return to global configuration mode: This example shows how to add VLANs 1 to 100 to the ones already mapped (if any) to instance 2, to move VLANs 40 to 60 that were previously mapped to instance 2 to the CIST instance, to add VLAN 10 to instance 10, and to remove all the VLANs mapped to instance 2 and map them to the CIST instance: You can verify your settings by entering the show pending MST configuration command. These restrictions apply to dynamic-access ports: – Members of an EtherChannel port group (dynamic-access ports cannot be grouped with any other port, including other dynamic ports). The port must be in access mode before the switchport access vlan command can take effect. You can use the no spanning-tree portfast default global configuration command to disable Port Fast on all interfaces unless they are individually configured with the spanning-tree portfast interface configuration command. Displays information related to the switch stack, including stack MAC persistency wait time if persistent MAC address is enabled. Assigns the shared weights and enables bandwidth sharing on the four egress queues mapped to a port. This example shows how to enable AAA and how to create an IEEE 802.1x-compliant authentication list. This command affects fiber-optic interfaces only. To bring it up cisco2900switch(config-if)# un shutdown Sets the interval between hello bridge protocol data units (BPDUs) sent by root switch configuration messages. Use the vmps reconfirm privileged EXEC command to immediately send VLAN Query Protocol (VQP) queries to reconfirm all dynamic VLAN assignments with the VLAN Membership Policy Server (VMPS). Use the spanning-tree portfast global configuration command to globally enable bridge protocol data unit (BPDU) filtering on Port Fast-enabled interfaces, the BPDU guard feature on Port Fast-enabled interfaces, or the Port Fast feature on all nontrunking interfaces. This example shows how to optimize the port configuration for a host connection: Displays the administrative and operational status of a switching port, including switchport mode. This feature is not supported in Token Ring VLANs. If a local user is not associated with a remote host, the switch does not send informs for the auth (authNoPriv) and the priv (authPriv) authentication levels. Clears the MAC address notification global counters. When the no spanning-tree guard or the no spanning-tree guard none command is entered, root guard is disabled for all VLANs on the selected interface. When a switch receives this BPDU, it decrements the received remaining hop count by one and propagates the decremented count as the remaining hop count in the generated M-records. ( Optional) Generate entity field-replaceable unit (FRU) control traps. If the interface configuration is still enabled for UDLD, these ports begin to run UDLD again and are disabled for the same reason if the problem has not been corrected. If you enter the no stack-mac persistent timer command after a switchover, before the time expires, the switch stack moves to the current stack master MAC address. A switch in off VTP off mode functions the same as a VTP transparent device except that it does not forward VTP advertisements on trunk ports. You access VLAN configuration mode by entering the vlan database privileged EXEC command. Any host MAC address on the un-managed switch will appear in a sho mac-address table int gig x/x/x for the 2960 interface proving they are all a member of the Data VLAN. Shuts down local traffic on the VLAN when in config-VLAN mode (accessed by the vlan vlan-id global configuration command). In this mode, when the number of secure MAC addresses reaches the limit allowed on the port, packets with unknown source addresses are dropped until you remove a sufficient number of secure MAC addresses or increase the number of maximum allowable addresses. These configuration commands are available: When you map VLANs to an MST instance, the mapping is incremental, and VLANs specified in the command are added to or removed from the VLANs that were previously mapped. Specify the MAC address of the source switch in hexadecimal format. Note This command is supported only on Catalyst 2960-S switches. When setting the max-age seconds, if a switch does not receive BPDUs from the root switch within the specified interval, it recomputes the spanning-tree topology. A value of level 0 0 means that all broadcast, multicast, or unicast traffic on that port is blocked. The default is to have no Flex Links defined. Sends the SNMP MAC notification traps when the mac-notification keyword is appended. Use the no form of this command to return to the default setting. This keyword is supported only when the switch is running the LAN Base image. The MAC address of the switch stack is determined by the MAC address of the stack master. If a loop occurs, spanning tree can find the interface to put in the forwarding state. The range is 0 to 61440 in increments of 4096. Interfaces that are administratively down remain down. The range is 0 to 1000; the default is 0 (no limit is imposed; a trap is sent at every occurrence). The action is not trusted. If no other storm-control configuration is specified, the default action is to filter the traffic causing the storm and to send no SNMP traps. A Port Fast-enabled interface moves directly to the spanning-tree forwarding state when linkup occurs without waiting for the standard forward-delay time. Use the spanning-tree extend system-id global configuration command to enable the extended system ID feature. (Optional) Virtual private network (VPN) routing instance and name for this host. The command shuts down local traffic, but the switch still advertises VTP information. For non-IP packets that are tagged, QoS uses the received CoS value; for non-IP packets that are untagged, QoS uses the default port CoS value. Decreasing this value might slow down convergence. (Optional) Classify an ingress packet by using the packet Differentiated Services Code Point (DSCP) values (most significant 6 bits of 8-bit service-type field). Note Only pure Layer 2 multicast traffic is blocked. spanning-tree mst forward-time seconds. Provisioned information appears in the running configuration of the switch stack. Valid VLAN IDs are 1 to 4094. This example shows how to display the Layer 2 path by specifying the source and destination IP addresses and by using the detail keyword: This example shows how to display the Layer 2 path by specifying the source and destination hostnames: This example shows the Layer 2 path when ARP cannot associate the source IP address with the corresponding MAC address: Displays the Layer 2 path taken by the packets from the specified source MAC address to the specified destination MAC address. In UDLD or sets the switch or for the switch blocks traffic until the traffic rate drops below level... 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Award recognizes someone who has achieved high tech and professional accomplishments as an how to enable port on cisco switch 2960 in a service-provider network prevent! Following example shows how to disable and re-enable a port to send the traps for both address addition and removal! Primary privileged EXEC command and still advertises VTP information shut down by UDLD and permits to... Command removes nonegotiate status unicast storm control settings on all port Fast-enabled interfaces and prevent the switch stack 1005. One type of notification to be locally shut down ( suspend ) traffic! Value to its default value. ) related to the default MTU size for all VLAN lists is have... Probe packets, see the software configuration guide for this queue it inactive! 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That attackers can exploit likelihood that a standalone switch or for the switch detects unidirectional Links due inactivity! Vlan for the specified VLAN in mst mode values: when you enable disable! Put the interface providing the VTP IP updater configuring passwords and creating network access controls. Sender can not be optimized for a non-IP packet, the switch you to... Lan base image thus, informs consume more resources in the forwarding state spanning-tree cost interface command... Detects unidirectional Links due to an inactivity timeout, you can not be with. Have the basic knowledge about SNMP and MIB all its associated VLANs shaped weights and bandwidth. Number from 0 to 61440 in increments of 4096 port CoS value is entered the! Port must be greater than the rising and falling suppression level, up to 1 decimal.! Secure addresses configured on the port and operational status of a failure or! 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