A. UNI/NNI is the classification of port types designed for the Metro Ethernet market. UNI, User Network Interface, is the interface that faces the subscriber, and NNI, Network Node Interface, is the interface that faces the service provider network.
What is the port in Cisco switch?
TE Port. In trunking E port (TE port) mode, an interface functions as a trunking expansion port. It may be connected to another TE port to create an extended ISL (EISL) between two switches. TE ports are specific to Cisco MDS 9000 Family switches.
What are ports on a switch?
On a network switch, the switch port is the physical opening where a data cable can be plugged in. Most networking devices also connect to the internet, allowing the devices to obtain internet access through the switch ports.
What does NNI stands for?
In telecommunications, a network-to-network interface (NNI) is an interface that specifies signaling and management functions between two networks. An NNI circuit can be used for interconnection of signalling (e.g., SS7), Internet Protocol (IP) (e.g., MPLS) or ATM networks.
What is the difference between UNI and NNI in ATM?
An ATM cell header can be one of two formats: UNI or NNI. The UNI header is used for communication between ATM endpoints and ATM switches in private ATM networks. The NNI header is used for communication between ATM switches. Unlike the UNI, the NNI header does not include the Generic Flow Control (GFC) field.
What is Interface in Cisco switch?
When you enter the configuration of the Cisco IOS for a switch, the physical ports are logical interfaces, so you specify an interface by describing the physical location of a port.
What is a Fibre Channel port?
A Fibre Channel port is a port on the storage system that connects it to hosts, switches, or another storage system either directly or through a switch. Fibre Channel ports are also referred to as I/O ports.
How many types of ports are there?
There are 65,535 possible port numbers, although not all are in common use. Some of the most commonly used ports, along with their associated networking protocol, are: Ports 20 and 21: File Transfer Protocol (FTP). FTP is for transferring files between a client and a server.
What are the NNIS on the Me 3400e-24ts-m switch?
Note On the Cisco ME 3400E-24TS-M switch, the dual-purpose ports serve as the uplink ports and are NNIs by default. If the switch is running the metro access image, only four ports on the switch can be configured as NNIs at one time.
Why choose a Cisco me 3400e access switch?
Because Carrier Ethernet access switches are typically deployed in small spaces in office buildings or apartments, the Cisco ME 3400E Series offers a compact form factor and flexible mounting options. In addition, the Cisco ME 3400E Series has all front-accessed connectors to simplify field installation and troubleshooting.
What is me3400 switch used for?
Cisco Catalyst ME3400 switch is a switch usually used at the service provider end. switches. UNI – User Network Interface. Port downstream (towards customer). Port can’t run STP, CDP or Etherchannel protocols like PAgP and LACP. ENI – Enhanced Network Interface.
How many NNIS can be configured on the switch at once?
If the switch is running the metro access image, only four ports on the switch can be configured as NNIs at one time. If the switch is running the metro IP access image, there is no limit to the number of NNIs that can be configured on the switch.
