Table of Contents
What is the meaning of Vty 0 15?
Lines 0 15 is vty lines 0, 1, 2 ,3 ,4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 and 15. for example if you were type in global configuration mode, line vty 0 15 you will enter configuration for lines 0-15.
What is the use of Vty?
The term “vty” stands for Virtual teletype. VTY is a virtual port and used to get Telnet or SSH access to the device. VTY is solely used for inbound connections to the device. These connections are all virtual with no hardware associated with them.
What does Vty line Vty mean?
The virtual terminal or “VTY” lines are virtual lines that allow connecting to the device using telnet or Secure Shell (SSH). Cisco devices can have up to 16 VTY lines. You can determine how many VTY lines you have by issuing “line vty 0?” from global configuration mode.
What is the meaning of line Vty 5 15?
VTY lines are usually used for creating out-of-band management sessions to devices. If a password is not supplied on a vty line, that line cannot be used for managing the device. In some cases administrators may decide to let junior staff to use lines 0 – 4 and senior staff to use lines 5 – 15.
What does interface VLAN 1 mean?
Description. VLAN 1 is a special VLAN that tags and handles most of the control plane traffic such as Spanning-Tree Protocol (STP), Cisco Discovery Protocol (CDP), Dynamic Trunking Protocol (DTP), VLAN Trunking Protocol (VTP), and Port Aggregation Protocol (PAgP) all VLAN 1 tagged traffic.
How many Vty lines does a router have?
five VTY ports
VTY ports are virtual TTY ports, used to Telnet or SSH into the router over the network. You can use them to connect to the router to make configuration changes or check the status. Most routers have five VTY ports, numbered 0 to 4.
What is Vty ACL?
Remote access via virtual terminal or virtual tty (vty) lines can also be secured by configuring inbound and outbound Access Control Lists (ACLs). Inbound ACLs enable inbound connections to a Cisco device, router or switch, from a restricted list of IP addresses.
What is a virtual terminal line?
Virtual terminal lines are used to allow remote access to the router. A virtual terminal line is not associated with either the auxiliary or console port. The router has five virtual terminal lines by default.
What is difference between interface VLAN and VLAN?
It sounds like what you’re asking is about the concept of switched virtual interfaces – “interface vlan 10”, for instance, is a switched virtual interface. This is different than a VLAN in that a VLAN is a logical network segment, a broadcast domain, whereas an SVI is a logical interface.
What is the difference between SVI and VLAN?
An SVI interface can be created for each VLAN that exists but only one SVI can be mapped to each VLAN. An SVI is virtual and has no physical port defined and performs the same functions for the VLAN as a router interface. SVI is also called Interface VLAN.
What port is Vty?
What are VTY ports? VTY ports are virtual TTY ports, used to Telnet or SSH into the router over the network. You can use them to connect to the router to make configuration changes or check the status. Most routers have five VTY ports, numbered 0 to 4.
What does transport input SSH do?
We can use the Cisco ‘transport input’ command to set which protocols are allowed to access the virtual terminal lines. We can choose from the following transport input command keywords to set the allowed protocols on the virtual terminal lines: ssh – allows TCP/IP SSH protocol only.
What is Access-Class 23 in?
NOTE: Access list 23 is an access control list (ACL) that permits only addresses from the 10.10. 10.0/29 subnet to access the router through the GUI. This ACL was part of the default configuration of the router when it was shipped from Cisco.
What is Cisco line?
Tata Steel Limited. Formerly. Tata Iron and Steel Company Limited (TISCO) Type.
Is VLAN a virtual interface?
A VLAN Interface is a virtual interface that is attached to the physical network port or bond that your VLAN is configured on. The VLAN Interface is used to automatically tag traffic that is routed through it with the appropriate VLAN ID.
What is VLAN and Vlanif?
Context. A VLANIF interface is a Layer 3 logical interface. After an IP address is assigned, the VLANIF interface enables VLANs to communicate and can have Layer 3 services deployed. A VLANIF interface goes Up only after the following conditions are met: The corresponding VLAN must have been created.
What is a Layer 3 interface?
Layer 3 interfaces forward packets to another device using static or dynamic routing protocols. You can use Layer 3 interfaces for IP routing and inter-VLAN routing of Layer 2 traffic. Routed Interfaces. You can configure a port as a Layer 2 interface or a Layer 3 interface.
Why do we need SVI?
A switch virtual interface (SVI) represents a logical layer-3 interface on a switch. VLANs divide broadcast domains in a LAN environment. Whenever hosts in one VLAN need to communicate with hosts in another VLAN, the traffic must be routed between them. This is known as inter-VLAN routing.