Mixing
Why does it say, that a Switch can segregate the collision domain?
Clash Royale CLAN TAG#URR8PPP
up vote
2
down vote
favorite
In general, the Ethernet Switch use RJ-45 link to connect the Hosts and the Switch uses Store and Forward mode.
So, why is there a saying:
Switch can segregate the collision domain
I thought the Switch Store and Forward mode and RF-45's full duplex mode eliminates collisions.
switch
edited 6 hours ago
Cown
4,5463830
asked 7 hours ago
qg_java_17137
1674
add a comment |Â
up vote
2
down vote
favorite
In general, the Ethernet Switch use RJ-45 link to connect the Hosts and the Switch uses Store and Forward mode.
So, why is there a saying:
Switch can segregate the collision domain
I thought the Switch Store and Forward mode and RF-45's full duplex mode eliminates collisions.
switch
edited 6 hours ago
Cown
4,5463830
asked 7 hours ago
qg_java_17137
1674
add a comment |Â
up vote
2
down vote
favorite
up vote
2
down vote
favorite
In general, the Ethernet Switch use RJ-45 link to connect the Hosts and the Switch uses Store and Forward mode.
So, why is there a saying:
Switch can segregate the collision domain
I thought the Switch Store and Forward mode and RF-45's full duplex mode eliminates collisions.
switch
edited 6 hours ago
Cown
4,5463830
asked 7 hours ago
qg_java_17137
1674
In general, the Ethernet Switch use RJ-45 link to connect the Hosts and the Switch uses Store and Forward mode.
So, why is there a saying:
Switch can segregate the collision domain
I thought the Switch Store and Forward mode and RF-45's full duplex mode eliminates collisions.
switch
switch
edited 6 hours ago
Cown
4,5463830
asked 7 hours ago
qg_java_17137
1674
edited 6 hours ago
Cown
4,5463830
asked 7 hours ago
qg_java_17137
1674
edited 6 hours ago
Cown
4,5463830
edited 6 hours ago
Cown
4,5463830
edited 6 hours ago
Cown
4,5463830
4,5463830
asked 7 hours ago
qg_java_17137
1674
asked 7 hours ago
qg_java_17137
1674
asked 7 hours ago
qg_java_17137
1674
1674
add a comment |Â
add a comment |Â
2 Answers
2
active
oldest
votes
up vote
4
down vote
accepted
A collision domain is a network segment connected by a shared medium or through repeaters/switches where data packets may collide with one another while being sent. The collision domain applies particularly in wireless networks, but also affected early versions of Ethernet. A network collision occurs when more than one device attempts to send a packet on a network segment at the same time. Members of a collision domain may be involved in collisions with one another. Devices outside the collision domain do not have collisions with those inside.
Since every port in a switch is its own collision domain, a host will never collide unless it's medium is running half duplex.
That is why a switch segregates collision domains, because every port is an individual collision domain.
edited 18 mins ago
jonathanjo
5,715323
answered 6 hours ago
Cown
4,5463830
add a comment |Â
up vote
3
down vote
The main point with switches is that they buffer network frames. This enables a switch to receive a frame and then forward it later when the egress link is idle. This decoupling of receive and transmit operations enables a network that works with flows that are largely independent from each other and only compete for link bandwidth.
This is in stark contrast to repeater hubs that repeat incoming bits while they are received. A hub can't buffer anything, so a collision on an egress interface needs to disrupt reception on the ingress interface - the hub needs to propagate an upstream collision back to the source. This way, all nodes connected to a hub (or potentially chained hubs) form a single, common collision domain. Only one node at a time can transmit.
A switch connected to a hub (or another non full-duplex capable device) can still use half-duplex mode on one of its ports but due to the buffering between the ports, any collision will not propagate across the switch. Therefore, a switch segregates collision domains or removes them completely.
Note that half-duplex Ethernet and hubs are very much a thing of the past and only interesting for historical reasons or under very specific circumstances. Practically all Gigabit and (by standard) faster Ethernet links have dropped support for half-duplex communication and you need to use switched or point-to-point connections exclusively.
answered 34 mins ago
Zac67
19.7k21047
add a comment |Â
2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
4
down vote
accepted
A collision domain is a network segment connected by a shared medium or through repeaters/switches where data packets may collide with one another while being sent. The collision domain applies particularly in wireless networks, but also affected early versions of Ethernet. A network collision occurs when more than one device attempts to send a packet on a network segment at the same time. Members of a collision domain may be involved in collisions with one another. Devices outside the collision domain do not have collisions with those inside.
Since every port in a switch is its own collision domain, a host will never collide unless it's medium is running half duplex.
That is why a switch segregates collision domains, because every port is an individual collision domain.
edited 18 mins ago
jonathanjo
5,715323
answered 6 hours ago
Cown
4,5463830
add a comment |Â
up vote
4
down vote
accepted
A collision domain is a network segment connected by a shared medium or through repeaters/switches where data packets may collide with one another while being sent. The collision domain applies particularly in wireless networks, but also affected early versions of Ethernet. A network collision occurs when more than one device attempts to send a packet on a network segment at the same time. Members of a collision domain may be involved in collisions with one another. Devices outside the collision domain do not have collisions with those inside.
Since every port in a switch is its own collision domain, a host will never collide unless it's medium is running half duplex.
That is why a switch segregates collision domains, because every port is an individual collision domain.
edited 18 mins ago
jonathanjo
5,715323
answered 6 hours ago
Cown
4,5463830
add a comment |Â
up vote
4
down vote
accepted
up vote
4
down vote
accepted
A collision domain is a network segment connected by a shared medium or through repeaters/switches where data packets may collide with one another while being sent. The collision domain applies particularly in wireless networks, but also affected early versions of Ethernet. A network collision occurs when more than one device attempts to send a packet on a network segment at the same time. Members of a collision domain may be involved in collisions with one another. Devices outside the collision domain do not have collisions with those inside.
Since every port in a switch is its own collision domain, a host will never collide unless it's medium is running half duplex.
That is why a switch segregates collision domains, because every port is an individual collision domain.
edited 18 mins ago
jonathanjo
5,715323
answered 6 hours ago
Cown
4,5463830
A collision domain is a network segment connected by a shared medium or through repeaters/switches where data packets may collide with one another while being sent. The collision domain applies particularly in wireless networks, but also affected early versions of Ethernet. A network collision occurs when more than one device attempts to send a packet on a network segment at the same time. Members of a collision domain may be involved in collisions with one another. Devices outside the collision domain do not have collisions with those inside.
Since every port in a switch is its own collision domain, a host will never collide unless it's medium is running half duplex.
That is why a switch segregates collision domains, because every port is an individual collision domain.
edited 18 mins ago
jonathanjo
5,715323
answered 6 hours ago
Cown
4,5463830
edited 18 mins ago
jonathanjo
5,715323
edited 18 mins ago
jonathanjo
5,715323
edited 18 mins ago
jonathanjo
5,715323
5,715323
answered 6 hours ago
Cown
4,5463830
answered 6 hours ago
Cown
4,5463830
answered 6 hours ago
Cown
4,5463830
4,5463830
add a comment |Â
add a comment |Â
up vote
3
down vote
The main point with switches is that they buffer network frames. This enables a switch to receive a frame and then forward it later when the egress link is idle. This decoupling of receive and transmit operations enables a network that works with flows that are largely independent from each other and only compete for link bandwidth.
This is in stark contrast to repeater hubs that repeat incoming bits while they are received. A hub can't buffer anything, so a collision on an egress interface needs to disrupt reception on the ingress interface - the hub needs to propagate an upstream collision back to the source. This way, all nodes connected to a hub (or potentially chained hubs) form a single, common collision domain. Only one node at a time can transmit.
A switch connected to a hub (or another non full-duplex capable device) can still use half-duplex mode on one of its ports but due to the buffering between the ports, any collision will not propagate across the switch. Therefore, a switch segregates collision domains or removes them completely.
Note that half-duplex Ethernet and hubs are very much a thing of the past and only interesting for historical reasons or under very specific circumstances. Practically all Gigabit and (by standard) faster Ethernet links have dropped support for half-duplex communication and you need to use switched or point-to-point connections exclusively.
answered 34 mins ago
Zac67
19.7k21047
add a comment |Â
up vote
3
down vote
The main point with switches is that they buffer network frames. This enables a switch to receive a frame and then forward it later when the egress link is idle. This decoupling of receive and transmit operations enables a network that works with flows that are largely independent from each other and only compete for link bandwidth.
This is in stark contrast to repeater hubs that repeat incoming bits while they are received. A hub can't buffer anything, so a collision on an egress interface needs to disrupt reception on the ingress interface - the hub needs to propagate an upstream collision back to the source. This way, all nodes connected to a hub (or potentially chained hubs) form a single, common collision domain. Only one node at a time can transmit.
A switch connected to a hub (or another non full-duplex capable device) can still use half-duplex mode on one of its ports but due to the buffering between the ports, any collision will not propagate across the switch. Therefore, a switch segregates collision domains or removes them completely.
Note that half-duplex Ethernet and hubs are very much a thing of the past and only interesting for historical reasons or under very specific circumstances. Practically all Gigabit and (by standard) faster Ethernet links have dropped support for half-duplex communication and you need to use switched or point-to-point connections exclusively.
answered 34 mins ago
Zac67
19.7k21047
add a comment |Â
up vote
3
down vote
up vote
3
down vote
The main point with switches is that they buffer network frames. This enables a switch to receive a frame and then forward it later when the egress link is idle. This decoupling of receive and transmit operations enables a network that works with flows that are largely independent from each other and only compete for link bandwidth.
This is in stark contrast to repeater hubs that repeat incoming bits while they are received. A hub can't buffer anything, so a collision on an egress interface needs to disrupt reception on the ingress interface - the hub needs to propagate an upstream collision back to the source. This way, all nodes connected to a hub (or potentially chained hubs) form a single, common collision domain. Only one node at a time can transmit.
A switch connected to a hub (or another non full-duplex capable device) can still use half-duplex mode on one of its ports but due to the buffering between the ports, any collision will not propagate across the switch. Therefore, a switch segregates collision domains or removes them completely.
Note that half-duplex Ethernet and hubs are very much a thing of the past and only interesting for historical reasons or under very specific circumstances. Practically all Gigabit and (by standard) faster Ethernet links have dropped support for half-duplex communication and you need to use switched or point-to-point connections exclusively.
answered 34 mins ago
Zac67
19.7k21047
The main point with switches is that they buffer network frames. This enables a switch to receive a frame and then forward it later when the egress link is idle. This decoupling of receive and transmit operations enables a network that works with flows that are largely independent from each other and only compete for link bandwidth.
This is in stark contrast to repeater hubs that repeat incoming bits while they are received. A hub can't buffer anything, so a collision on an egress interface needs to disrupt reception on the ingress interface - the hub needs to propagate an upstream collision back to the source. This way, all nodes connected to a hub (or potentially chained hubs) form a single, common collision domain. Only one node at a time can transmit.
A switch connected to a hub (or another non full-duplex capable device) can still use half-duplex mode on one of its ports but due to the buffering between the ports, any collision will not propagate across the switch. Therefore, a switch segregates collision domains or removes them completely.
Note that half-duplex Ethernet and hubs are very much a thing of the past and only interesting for historical reasons or under very specific circumstances. Practically all Gigabit and (by standard) faster Ethernet links have dropped support for half-duplex communication and you need to use switched or point-to-point connections exclusively.
answered 34 mins ago
Zac67
19.7k21047
answered 34 mins ago
Zac67
19.7k21047
answered 34 mins ago
Zac67
19.7k21047
answered 34 mins ago
Zac67
19.7k21047
19.7k21047
add a comment |Â
add a comment |Â
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
StackExchange.ready(
function ()
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fnetworkengineering.stackexchange.com%2fquestions%2f53367%2fwhy-does-it-say-that-a-switch-can-segregate-the-collision-domain%23new-answer', 'question_page');
);
Post as a guest
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
