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Posted by on September 14, 2005, 10:22 pm
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What's the differences between
router contains a built-in switch
and
router without a built-in switch??
Some routers even have built-in firewall.
I saw many routers in the market has built-in switch, but I don't know
why, and what's the advantages?
please advise. thanks!!
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Posted by CJT on September 15, 2005, 6:25 am
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jrefactors@hotmail.com wrote:
> What's the differences between
>
> router contains a built-in switch
> and
> router without a built-in switch??
>
> Some routers even have built-in firewall.
>
> I saw many routers in the market has built-in switch, but I don't know
> why, and what's the advantages?
>
> please advise. thanks!!
>
The combination might be cheaper than the two parts separately.
And then it's only one thing to plug in.
It's like stereo equipment. You can buy a receiver, or you can
buy separate amplifier and tuner and connect them together.
--
The e-mail address in our reply-to line is reversed in an attempt to
minimize spam. Our true address is of the form che...@prodigy.net.
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Posted by Duane Arnold on September 15, 2005, 7:03 am
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> What's the differences between
>
> router contains a built-in switch
> and
> router without a built-in switch??
A router with a built-in switch works on the same principles as a standalone
switch. A router with a built in switch can be configured to just be a
switch and not a router by disabling the DHCP server on the router and then
it's just a standalone switch.
http://www.homenethelp.com/web/explain/about-hubs-and-switches.asp
I don't know about routers without a built-in switch.
>
> Some routers even have built-in firewall.
Some routers use a packet filter FW solution like SPI some don't and some
routers use more than SPI a more powerful packet filter.
Most NAT routers for home usage fall into the category of the link below.
http://www.homenethelp.com/web/explain/about-NAT.asp
About firewalls
http://www.more.net/technical/netserv/tcpip/firewalls/
What does a computer, router or appliance running a network/Internet FW do?
http://www.firewall-software.com/firewall_faqs/what_does_firewall_do.html
>
> I saw many routers in the market has built-in switch, but I don't know
> why, and what's the advantages?
see link above about hubs and switches
Duane :)
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Posted by Volker Birk on September 15, 2005, 10:17 am
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> What's the differences between
> router contains a built-in switch
> and
> router without a built-in switch??
If routers are also switches, then they're offering both of these two
functionalities:
http://en.wikipedia.org/wiki/Router
http://en.wikipedia.org/wiki/Network_switch
A router works layer 3, a switch works layer 2 in the OSI reference
model, see http://en.wikipedia.org/wiki/OSI_model#Description_of_layers
> Some routers even have built-in firewall.
That usually means, that the devices have some extra filtering
functionality.
Yours,
VB.
--
"Es kann nicht sein, dass die Frustrierten in Rom bestimmen, was in
deutschen Schlafzimmern passiert".
Harald Schmidt zum "Weltjugendtag"
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Posted by Yousuf Khan on September 17, 2005, 10:12 pm
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> What's the differences between
>
> router contains a built-in switch
> and
> router without a built-in switch??
These days all home broadband routers contain a built-in switch. Now
whether they are good-quality switches vs. standalone switches is a
matter of debate.
In the olden days you had home routers that only had one port for the
WAN side, and one port for the LAN side, and nothing else. That meant
that if you wanted to connect multiple computers to that LAN side, then
you had to buy a seperate hub or switch. I had one of those types of
routers, it was an old Linksys. I had to connect the LAN port to a hub,
and then I could connect computers to the hub.
Now, I hope you know what the difference is between a hub and a switch.
If not, then a switch is just a more sophisticated suped-up hub. Whereas
hubs had a lot of collisions between packets as multiple computers tried
to access the Ethernet simultaneously, the switch took the hub concept
and made it a much more managed experience. It's sort of like the
difference between a road with traffic lights and a road without.
> Some routers even have built-in firewall.
Actually, all home routers have a built-in firewall. It's a natural
feature that emerges from how they work. They can't help but also act as
firewalls. They use a feature called NAT (natural address translation)
which means that they give all computers in the LAN these special fake
IP addresses which can't be seen on the Internet, only the router's own
WAN IP address can be seen -- natural firewall.
> I saw many routers in the market has built-in switch, but I don't know
> why, and what's the advantages?
Avoid having to pay for an additional network component, if everything
is built in. Cheaper to package it all together.
Yousuf Khan
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