Which is open standard trunking protocol?
802.1Q is an open Standard, this means that we can enable it on Switches from different vendors, but ISL is Cisco-proprietary, and this means if we want to use, we have to use Cisco equipments.
What is the 802.1Q protocol?
802.1Q is the networking standard that defines virtual LANs (VLANs) on an Ethernet network. VLANs are logical networks that share a single physical connection using 802.1Q tagged frames. An Ethernet frame can contain an 802.1Q tag, with fields that specify VLAN membership and user priority.
Is VTP in CCNA exam?
This topic is not included in the latest version of the CCNA exam (200-301). If you are studying for the exam feel free to skip this article. VTP (VLAN Trunking Protocol) is a Cisco proprietary protocol used by Cisco switches to exchange VLAN information.
What is the purpose of VTP CCNA?
Cisco’s VLAN Trunking Protocol (VTP) provides an easier method for maintaining consistent VLAN configuration throughout the switched network. VTP is a protocol used to distribute and synchronize identifying information about VLANs configured throughout a switched network.
What is ISL used for?
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.
How does DTP work?
The Dynamic Trunking Protocol (DTP) is a proprietary networking protocol developed by Cisco Systems for the purpose of negotiating trunking on a link between two VLAN-aware switches, and for negotiating the type of trunking encapsulation to be used. It works on Layer 2 of the OSI model.
Which are the two trunking protocols?
Trunking Protocol Standards. There are two trunking protocols used on modern communication networks: Inter-Switch Link (ISL) from Cisco and the aforementioned nonproprietary IEEE 802.1Q.
What is the difference between VLAN and VTP?
VLAN configuration is done on one switch (i.e. switch in VTP server mode). The VTP protocol automatically propagates VLAN information to all the switches in the domain i.e. switches with VTP client modes.
Does ISL use native VLAN?
ISL supports the use of normal range VLANs (1-1005) and extended range VLANs (1006-4094). Unlike [cref 22 802.1Q tagging], there is no concept of a native vlan in ISL because traffic from all VLANs is encapsulated with a full ISL header.
What is ISL trunking?
Inter-Switch Link (ISL) Trunking is optional software requiring a license that allows you to create trunking groups of ISLs between adjacent switches.