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Alex-972019-10-02 12:49:51
Computer networks
Alex-97, 2019-10-02 12:49:51

Can L3 switches (not routers) switch to private IPv4 addresses like 192.168.0.0 -192.168.255.255?

The case when L3 switches (not routers) and not L2 are used in the local area network. Will L3 routers be able to switch to local LAN addresses 192.168.0.0 -192.168.255.255?

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2 answer(s)
M
Mystray, 2019-10-02
@Mystray

1) Layer 3 switches are "routers" with a set of specific hardware restrictions.
2) Switching, in most cases, belongs to the 2nd layer, and there IP addresses do not matter, only MAC is important. Which, of course, will be switched by the switch, and up to IP addresses, in this case it does not matter.
3) IP addresses are routed by routers between different subnets. Except in very special cases (multicast and reserved in a special way for special tasks), the router does not care what subnets are there, as long as they are in the route table.
And if there is only one subnet between the nodes, then the router is not needed, only switching is needed, and we return to step 2) and switch the nodes at level 2 with a conventional switch (at least L2).
PS I deliberately exclude NAT, since there is not a word about it in the question.

V
Valentin, 2019-10-02
@vvpoloskin

If you are talking about a classic router, then it can (although this is not his job). Settings like bridge-domain, bridge-virtual-interface are made.

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