[c-nsp] ASR920 vs ASR1001-x
Mohammad Khalil
eng_mssk at hotmail.com
Tue May 17 06:54:52 EDT 2016
Hi all
I am trying to change the design of my MPLS network from in-band RR to out-of-band RR
Will the ASR920 be a good option ?
Thanks
BR,
Mohammad
> From: cnsp at marenda.net
> To: sthaug at nethelp.no; mark.tinka at seacom.mu
> Date: Sat, 30 Apr 2016 13:39:25 +0200
> Subject: Re: [c-nsp] ASR920 vs ASR1001-x
> CC: cisco-nsp at puck.nether.net
>
>
> Even a 3COM 4200G is called a "layer 3 switch"
> (but it's very limited :
> " 32 static routes
> 8 IP interfaces
> Hardware based routing"
> (from an ancient datasheet)
>
> That's just marketing clouds ... tons of features, often mutex;
> so they will not fly as a cloud should.
>
> (The mentioned device and it's successors work quite well
> for their target market as "full manageable" L2 device .)
>
> Today, a bridge with some hardware-speed-up is called a "switch" even if it
> does only store-and-forward;
> "switch" was the name for such a device with "cut through" and minimal
> Number of Ethernet-frame bits delay (6 Octets for the destination-MAC plus
> some bits for setup up the path to the output port).
>
> A L3 Switch would be a similar device, looking into L3 info
> which is "later" in the paket (and sometimes on variable place to
> complicate this)
> so the minimum delay ( with real switching - not store-and-forward ) must be
> higher.
>
> Everything else forwarding on L3 (per "store and forward") should be just
> called "router"
> even when it's quite fast due to high CPU or hardware-based acceleration.
>
> just my 0.01 $
>
> Juergen.
>
> -----Ursprüngliche Nachricht-----
> Von: cisco-nsp [mailto:cisco-nsp-bounces at puck.nether.net] Im Auftrag von
> sthaug at nethelp.no
> Gesendet: Freitag, 29. April 2016 12:36
> An: mark.tinka at seacom.mu
> Cc: cisco-nsp at puck.nether.net
> Betreff: Re: [c-nsp] ASR920 vs ASR1001-x
>
> > > ASR920 is more like a switch.
> > Not really - it's actually a router.
> > It just looks like a switch.
>
> Interesting - one of our local Cisco distributors, in a meeting with us and
> with Cisco people present, repeatedly called ASR920 a Layer 3 switch.
> With no protest from the Cisco representatives.
>
>
>
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