Cisco 3850 mac address learning mac#

(Optional) offset-Specifies the number of minutes to add during summer time.

(Optional) hh:mm-Specifies the time (24-hour format) in hours and minutes.

(Optional) month-Specifies the month (January, February.).

(Optional) day-Specifies the day of the week (Sunday, Monday.).

(Optional) week- Specifies the week of the month (1 to 4, first, or last).

zone-Specifies the name of the time zone (for example, PDT) to be displayed when summer time is in effect.

If the starting month is after the ending month, the system assumes that you are in the southern hemisphere. If you specify clock summer-time zone recurring without parameters, the summer time rules default to the United States rules. The start time is relative to standard time. All times are relative to the local time zone. PDT recurring 10 March 2013 2:00 3 November 2013 2:00Ĭonfigures summer time to start and end on the specified days every year. clock summer-time zone recurring ]Ĭlock summer-time zone date date month year hh:mm date month year hh:mm ]Įxample: Switch(config)# clock summer-time PDT dateĬonfigures summer time to start and end on specified days every year.Ĭlock summer-time zone recurring ]Įxample: Switch(config)# clock summer-time clock summer-time zone date date month year hh:mm date month year hh:mm ]ģ. To configure summer time (daylight saving time) in areas where it starts and ends on a particular day of the week each year, perform this task: SUMMARY STEPSĢ. The switch always uses the store-and-forward method: complete packets are stored and checked for errors before transmission. If the destination address is on the port that sent the packet, the packet is filtered and not forwarded.

Cisco 3850 mac address learning mac#

Using the MAC address table, the switch forwards the packet only to the port associated with the destination address. The switch sends packets between any combination of ports, based on the destination address of the received packet. However, the switch maintains an address table for each VLAN, and STP can accelerate the aging interval on a per-VLAN basis. The aging interval is globally configured. As devices are added or removed from the network, the switch updates the address table, adding new dynamic addresses and aging out those that are not in use. The switch provides dynamic addressing by learning the source address of packets it receives on each port and adding the address and its associated port number to the address table. With multiple MAC addresses supported on all ports, you can connect any port on the switch to other network devices. To map domain names to IP addresses, you must first identify the hostnames, specify the name server that is present on your network, and enable the DNS. To keep track of domain names, IP has defined the concept of a domain name server, which holds a cache (or database) of names mapped to IP addresses. A specific device in this domain, for example, the File Transfer Protocol (FTP) system is identified as. For example, Cisco Systems is a commercial organization that IP identifies by a com domain name, so its domain name is. Domain names are pieced together with periods (.) as the delimiting characters. IP defines a hierarchical naming scheme that allows a device to be identified by its location or domain. When you configure DNS on your switch, you can substitute the hostname for the IP address with all IP commands, such as ping, telnet, connect, and related Telnet support operations. The DNS protocol controls the Domain Name System (DNS), a distributed database with which you can map hostnames to IP addresses. Feature History and Information for Switch Administration.Additional References for Switch Administration.Example: Configuring Unicast MAC Address Filtering.Example: Adding the Static Address to the MAC Address Table.Example: Configuring MAC Threshold Notification Traps.Example: Configuring MAC Address Change Notification Traps.Configuration Examples for Switch Administration.

Monitoring and Maintaining Administration of the Switch.Configuring Unicast MAC Address Filtering.

Adding and Removing Static Address Entries.

Configuring MAC Threshold Notification Traps.

Configuring MAC Address Move Notification Traps.

Configuring MAC Address Change Notification Traps.

Configuring a Message-of-the-Day Login Banner.

Configuring Summer Time (Daylight Saving Time).

Default System Name and Prompt Configuration.

Information About Administering the Switch.