Han Chuan Alex Ang wrote:
>
> hi, I am trying to have a clearer picture of the layer 3
> switching
>
> concept.
>
> Assuming that I have a Core Catalyst 6 series switch with layer
> 3
>
> switching capabilities, I have a Access layer switch connected
> to the
>
> core with two port label Vlan
At 1:57 AM + 2/19/03, Han Chuan Alex Ang wrote:
>hi, I am trying to have a clearer picture of the layer 3 switching
>
>concept.
>
>Assuming that I have a Core Catalyst 6 series switch with layer 3
>
>switching capabilities, I have a Access layer switch connected to the
>
>core with two port lab
I'm fairly certain the answer to your first question is no, the switch will
not be intelligent enough to switch it to the appropriate port
automatically. The reason is that the switch must go through a layer 3
device to get from one VLAN (aka IP subnet) to another. I don't think this
is a real is
your still a little off target...
Layer 2 interfaces can be access ports or trunks for vlans
Layer 2 or Layer 3 switch interfaces dont need to be
sub-interfaces..
Layer 3 vlan interfaces(svi) require layer 2 trunk
interfaces to interconnect vlans in other switches
Layer 3 interfaces only require a
First, thanks for your answer Drew ... but I'm still
confused ...
> It determines what information
> is stored in the mls entry and enforces all packets
> coming through the mls
> switch to be compared with the entry according to
> the flow mask specified
> with set mls flow.
How about the note i
Muhammad Asif Rashid wrote:
>
> Any 6500 series switch can be a layer 3 switch as well as the 3500
> series and 2900 series, I believe.
With many limitations. Check the documentation. It depends on the
environment you want to put the switch into. Same for 2948G-L3 and
other "layer 3" devices
Any 6500 series switch can be a layer 3 switch as well as the 3500
series and 2900 series, I believe.
Thanks,
--
**
Q. Wade Billings
Product Operations Manager
Excite@Home - The Leader in Broadband
_
FAQ,
FRS,
Layer 3 Switching, is not a situation when the CPU isn't involvedThat is
Fast Switching, This is actually when routing information is stored in CACHE
memory and it is processed without running as many interrupts to the
CPU.
And YES L3 switching does have everything to do with L2 fram
> Any 6500 series switch can be a layer 3 switch as well as the 3500
> series and 2900 series, I believe.
No.
2900XL and 3500XL run IOS, but canoot perform any routing
services.
To clarify on your other statement, ANY model in the 6000
series will perform "Layer 3 switching" as long as you
hav
Cisco's "layer 3 switching", simply put, refers to all routing processes
except process switching (conventional routing with CPU). Namely, any
routing process without CPU's intervention is considered "layer 3
switching". This has nothing to do with frames (layer 2) obviously.
HTH,
Rog
> -
> 1. What does the process Layer 3 switching refer to?
"switching" has become a convuluted term.
"switching", in marketing-speak, means "fast" for all
intents and purposes.
Thus, "L3 switching" is "fast routing".
Have fun.
**NOTE: New CCNA/CCDA List has been formed. For more information go to
Title: RE: LAYER 3 SWITCHING
Well here are my answers, I wager $700.00 of Jeopardy money.
1. Layer 3 switching is actually routing. It is designed for high speed routing however.
2. For the answer to this question remember your encapsulation from CCNA - Data->segments->packets-&
The answer is, every Cisco switch implements it differently. Try this link,
it gives a basic explanation of each switch's method.
http://www.cisco.com/warp/public/784/packet/july98/12.html
Steve
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
FRS
Sent
EMAIL PROTECTED] Internet Mail
-Original Message-
From: Guyler, Rik [EESUS] [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, September 27, 2000 9:00 AM
To: Cisco Groupstudy (E-mail)
Subject: RE: Layer 3 switching
2948G-L3 -- Basically a 48-port router!
-Original Message-
From: Fow
Study (E-mail)Subject: RE: Layer 3 switching
In
the 6000 family the MSFC acts as the MLS-RP, the equivalent of an RSM or Layer
3 router, and the Policy Feature Card(PFC) acts as the MLS-SE, which basically
is the equivalent of the Net Flow Feature Card(NFFC) in the Cat 5000
f
-From: Steve and Monica Brokaw
[mailto:[EMAIL PROTECTED]]Sent: Wednesday, September 27, 2000
2:48 PMTo: Abruzzese, John; [EMAIL PROTECTED]Subject:
RE: Layer 3 switching
OK,
maybe this is a question of semantics, maybe I'll get flamed, but here goes
anyway. The 6000 series
ember 27, 2000 12:37 PMTo:
Cisco Group Study (E-mail)Subject: FW: Layer 3
switching
-Original Message-From: Abruzzese, John
Sent: Wednesday, September 27, 2000 1:36 PMTo: Iohan
ReyesSubject: RE: Layer 3 switching
The
Catalyst 6000 switch family will do layer 3 swit
Please correct me if I am wrong, but aren't the 2900 and 3500 layer 2 only?
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Q
Wade Billings
Sent: Wednesday, September 27, 2000 1:40 PM
To: [EMAIL PROTECTED]
Subject: RE: Layer 3 switching
Any
Title: Layer 3 switching
6000
series switch, 5500, 4006 have a router module to put in it.
-Original Message-From: Iohan Reyes
[mailto:[EMAIL PROTECTED]]Sent: Wednesday, September 27, 2000 12:45
PMTo: Fowler, Joey; [EMAIL PROTECTED]Subject: RE:
Layer 3 switching
I
Any 6500 series switch can be a layer 3 switch as well as the 3500
series and 2900 series, I believe.
Thanks,
--
**
Q. Wade Billings
Product Operations Manager
Excite@Home - The Leader in Broadband
begin:vcard
n:Billings;Q. Wade
tel;fa
Title: Layer 3 switching
I
believe the 6000 series can be outfitted with a module to make it a layer-3
switch...
-Original Message-From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]On Behalf Of Fowler, JoeySent:
Wednesday, September 27, 2000 11:19 AMTo:
[EMAIL PROTECTED]Sub
Title: Layer 3 switching
2948G-L3 -- Basically a 48-port
router!
-Original Message-From: Fowler, Joey
[mailto:[EMAIL PROTECTED]]Sent: Wednesday, September 27, 2000
11:19 AMTo: [EMAIL PROTECTED]Subject: Layer 3
switching
I know there has been much discussion on this in
t
Francis,
The process you have described looks more like
"load-balancing"/"load-sharing" - Cisco LocalDirector supports that kind of
traffic management. It seems that Layer4 switches do a bit difeerent thing
(though mosty of them do load-balancing).
We use FoundryNetworks Layer 4 switches in some
I would think the process of directing to the lest loaded server would be
higher in the stack than level 4. Except that the Alteon uses some statefull
firewall like table where it remembers the sessions going in to each server,
it would probably work best if all the servers are of alike power, wou
We use an Alteon Web Switch that uses "layer 4 switching". I don't know if
the concept is the same for cisco switches, but this is how it works on the
Alteon:
Each web site is assigned a "virtual IP" that is not assigned to any host;
it is defined in the switch config. Then we have the web server
Layer 4 switching means that a router can forward packets based on L4
information such as TCP port #. This can be used to prioritize specific
applications and is currently supported by most vendors. Products from
vendors such as Allot, Top Layer and others can even make decisions based on
higher
On TCP/IP that would mean routing using TCP info (i.e. port number). When
using certain apps (voice, for example) it's necessary that the router knows
what app is it routing (by using upper layer info) so that it gives apps the
service they need.
Francisco Muniz
"Ms. Maria" <[EMAIL PROTECTED]> e
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