Inter-switch access links

Inter-Switch Link (ISL) is a Cisco proprietary protocol for frame tagging. It supports up to 1000 VLANs and can be used over Fast Ethernet and Gigabit Ethernet links only. A switch port can work in tw...
Contact online >>

HOME / Inter-switch access links - Tlaletso Global Photonics

Cisco Inter Switch Link (ISL), How ISL Works, And Advantages

A Cisco proprietary link layer protocol called Cisco Inter Switch Link (ISL) was created to preserve Virtual Local Area Network (VLAN) data inside Ethernet frames while traffic moves between

View more

Inter-Switch Link (ISL)

Another VLAN tagging protocol is Inter-Switch Link (ISL). This protocol is Cisco proprietary, which means that, unlike 802.1Q, it can be used only between Cisco switches.

View more

Cisco Inter-Switch Link (ISL) Explained

This tutorial explains the Cisco Inter-Switch Link trunking protocol. Learn What is ISL in networking and how ISL works.

View more

lsw_cfg_switch_encap.mif

ISL provides VLAN capabilities while maintaining full wire speed performance on Fast Ethernet links in full- or half-duplex mode. ISL operates in a point-to-point environment and will support up to 1000

View more

Inter-Switch Link (ISL)

In the VSX solution topology, an Inter-Switch Link (ISL) is a layer 2 interface between two VSX peer switches. Each VSX switch must be configured with an ISL link connected to its peer VSX switch.

View more

Inter-Switch Link (ISL) and IEEE 802.1Q

Inter-Switch Link (ISL) - This is a VLAN identification method in which VLAN information is explicitly tagged onto Ethernet frame. ISL is proprietary to CISCO switches.

View more

Inter-Switch Link (ISL) VLAN Tagging Protocol

Inter-Switch Link (ISL) protocol encapsulates the entire Ethernet frame (Fast Ethernet or Gigabit Ethernet) with a 26-byte header and a 4-byte frame check sequence (FCS) for a total of 30 bytes of

View more

inter-switch-link | Junos OS | Juniper Networks

The Inter-Switch Link protocol (ISL) must be configured on a trunk port of the primary VLAN in order to connect the switches composing the PVLAN to each other. You do not need to configure an ISL

View more

Inter-Switch Link (ISL) overview | CCNA#

It supports up to 1000 VLANs and can be used over Fast Ethernet and Gigabit Ethernet links only. ISL works by encapsulating an Ethernet frame in an ISL header and trailer.

View more

Cisco Inter-Switch Link

ISL is Cisco''s VLAN encapsulation protocol and is supported only on some Cisco equipment over the Fast and Gigabit Ethernet links. It is offered as an alternative to the IEEE 802.1Q standard, a widely

View more

Laser Diodes & VCSEL

High-power CW/pulsed laser diodes (808nm–1550nm) and VCSEL arrays for 3D sensing, LIDAR, and optical interconnects.

Silicon Photonics & CPO

Co-packaged optics engines, silicon photonics ICs, and optical I/O solutions for high-density switches and AI clusters.

Optical Transceivers & AOCs

400G/800G QSFP-DD/OSFP modules, active optical cables, and custom optical engines for data center interconnects.

Laser Drivers & CDR

Low-jitter laser drivers, integrated CDR circuits, and linear TIAs for coherent optics and short-reach links.

Photonics Insights & Technical Resources

Contact Tlaletso Global Photonics

We provide custom laser diodes, VCSEL arrays, DFB lasers, drivers, CDR, modulators, TIAs, co-packaged optics, silicon photonics, LPO, transceivers, and AOCs.
From prototype to mass production, our team ensures premium quality and technical support.

23 Photonics Avenue, Techno Park, Stellenbosch, 7600, South Africa

+27 63 148 2975  |  +27 63 148 2975  |  [email protected]