Inter-Switch Link ( ISL ) is a Cisco proprietary protocol used to interconnect multiple switches and maintain VLAN information as traffic travels between switches on trunk links.

Cisco also has a proprietary trunking protocol called Inter-Switch Link which encapsulates the Ethernet frame with its own container, which labels the frame as belonging to a specific VLAN.

The Cisco Inter-Switch Link ( ISL ) protocol for supporting VLANs on Ethernet and similar LAN technologies was based on IEEE 802. 10 ; in this application 802. 10 has largely been replaced by IEEE 802. 1Q.

* Cisco Inter-Switch Link, a proprietary Cisco VLAN trunking protocol

Cisco Inter-Switch Link ( ISL ) is a Cisco Systems proprietary protocol that maintains VLAN information in Ethernet frames as traffic flows between switches and routers, or switches and switches.

Another related Cisco protocol, Dynamic Inter-Switch Link Protocol ( DISL ) simplifies the creation of an ISL trunk from two interconnected Fast Ethernet devices.

fr: Cisco Inter-Switch Link

( Note that the term ' trunk ' is also used for what Cisco calls " channels ": Link Aggregation or Port Trunking ).

* Cisco page on Synchronous Data Link Control and Derivatives

The Cisco Discovery Protocol ( CDP ) is a proprietary Data Link Layer network protocol developed by Cisco Systems.

Unidirectional Link Detection ( UDLD ) is a data link layer protocol from Cisco Systems to monitor the physical configuration of the cables and detect unidirectional links.

* Understanding and Configuring the Unidirectional Link Detection Protocol Feature at Cisco Systems

Cisco in its Signalling Link Terminals ( either standalone or integrated in another gateway ) uses RUDP for backhauling of SS7 MTP3 or ISDN signaling.

* Cisco Signaling Link Terminal

ISL has been available on Cisco routers since Cisco IOS Software Release 11. 1.

** Cisco home page for Virtual LANs / VLAN Trunking Protocol ( VLANs / VTP ) ( discusses DSL, DTP, GVRP, ISL, VTP, 802. 1Q )

The college has excellent Industry-Institution interaction with all the reputed Global Companies visiting the campus, which include: Yahoo !, Microsoft, Alcatel Lucent, IBM ISL, IBM GBS, LG, Cognizant, Nokia, Cisco, Samsung, Infosys, Wipro, EMC2, Motorola, SUN, MindTree, L & T ECC, L & T Powai, HCL, Vedanta, Tata Elxsi, Tata Technology, Tata Autocomp, Ford, Oracle, DELL, Avtec, Aditi Technologies, Kennametal, ITC Infotech, KOEL, ABB, Ashok Leyland, TVS Motors, BEL, Honeywell, Bosch, Akamai, TVS, GE, GM, SAP Labs, Mu-sigma, Toshiba, Applied Material, Cypress Semiconductors, Volvo, Delloitte, Reliance, Cosmic Circuit, Gammon India, Analog Devices, Otis, Atkins, Texas Instruments, TKM, Mercedes, HCL Aerospace, AON, Amazon, Huawei, J K Tyers, Quest Global, Oracle, Tejas Networks, VM Ware, Citrix, Comm-vault, Continental, etc.

Cisco ISL, VTP and IEEE 802. 1Q are compatible with EtherChannel.

ISL is Cisco's VLAN tagging protocol and is supported only on some Cisco equipment over Fast and Gigabit Ethernet links.

It is offered as an option to the IEEE 802. 1Q standard, a widely used VLAN tagging protocol, although the use of ISL for new sites is deprecated by Cisco.

This feature, which is not supported by all DHCP servers, is variously called Static DHCP Assignment by DD-WRT, fixed-address by the dhcpd documentation, Address Reservation by Netgear, DHCP reservation or Static DHCP by Cisco and Linksys, and IP reservation or MAC / IP binding by various other router manufacturers.

Interior Gateway Routing Protocol ( IGRP ) is a distance vector interior routing protocol ( IGP ) invented by Cisco.

In Cisco IOS versions 12. 3 and greater, IGRP is completely unsupported.

In the new Cisco CCNA curriculum ( version 4 ), IGRP is mentioned only briefly, as an " obsolete protocol ".

Cisco Systems ' 2500 series router uses a 68EC030, which is a 68030 without memory management unit.

The 68EC040 was used in Cisco switch Supervisor Engine I that is the heart of models 2900, 2948G, 2980G, 4000, 4500, 5000, 5500, 6000, 6500 and 7600.

In the Cisco operating system, IBGP routes have an administrative distance of 200 and that of EBGP is 20 ; IBGP is thus less preferred than either external BGP or any interior routing protocol.

While LOCAL_PREFERENCE is the first rule in the standard, once reach-ability of the NEXT_HOP is verified, Cisco and several other vendors first consider a decision factor called WEIGHT which is local to the router ( i. e. not transmitted by BGP ).

* Cisco, a Bay Area rapper who is also called " Don Cisco "

Enhanced Interior Gateway Routing Protocol-( EIGRP ) is a Cisco proprietary routing protocol loosely based on their original IGRP.

On Cisco routers, the interface bandwidth is a configurable static parameter expressed in kilobits per second ( setting this only affects metric calculation and not actual line bandwidth ).

In more recent versions of Cisco IOS ( e. g. 12. 4 ), this range is between 1 and 16.

Cisco Systems, Inc. is an American multinational corporation headquartered in San Jose, California, United States, that designs, manufactures, and sells networking equipment.

The name " Cisco " was derived from the city name, San Francisco, which is why the company's engineers insisted on using the lower case " cisco " in the early days.

Cisco announced on March 15, 2012 that it is acquiring NDS Group for a $ 5B.

* Cisco Unified Operations Manager ( CUOM ) – is a NMS for voice.

* Cisco IP Communicator is a VoIP softphone software application.

It is a Cisco proprietary protocol that runs on port UDP / 4500.

Cisco became a major provider of Voice over IP to enterprises, and is now moving into the home user market through its acquisitions of Scientific Atlanta and Linksys.

According to author Ethan Gutmann, Cisco and other telecommunications equipment providers supplied the Chinese government with surveillance and Internet infrastructure equipment that is used to block Internet websites and track Chinese on-line activities.

* Cisco Networking Services, a proprietary directory service-based management system for Cisco Systems ' networking products

It was a Cisco proprietary proposal, and was renamed " Label Switching ".

In addition, several other proprietary variations have been implemented by systems vendors, such as the totally stubby area ( TSA ) and the NSSA not so stubby area, both an extension in Cisco Systems routing equipment.

It can register with a Cisco Unified Communications Manager or Cisco Unified Communications Manager Express using either SIP or Cisco's proprietary Skinny Client Control Protocol.

* Media Convergence Server, a proprietary hardware product by Cisco Systems

RIP supports cross-platform distance vector routing whereas IGRP is a Cisco Systems proprietary distance vector routing protocol.

* Cisco Discovery Protocol, a proprietary layer 2 network protocol developed by Cisco Systems

The XTACACS protocol was developed by and is proprietary to Cisco Systems.

The Cisco 7920 supports Cisco's proprietary SCCP Skinny Client Control Protocol.

Hot Standby Router Protocol ( HSRP ) is a Cisco proprietary redundancy protocol for establishing a fault-tolerant default gateway, and has been described in detail in RFC 2281.

The Lightweight Extensible Authentication Protocol ( LEAP ) is a proprietary wireless LAN authentication method developed by Cisco Systems.

* Gateway Load Balancing Protocol-A Cisco Systems proprietary router redundancy protocol providing load balancing

* Hot Standby Routing Protocol-A Cisco Systems proprietary router redundancy protocol

Long Reach Ethernet ( LRE ) was a proprietary networking protocol marketed by Cisco Systems, intended to support multi-megabit ( 5 to 15 Mbit / s ) performance over telephone-grade unshielded twisted pair wiring over distances up to 5, 000 feet ( 1. 5 km ).