router suggestion

[burak-isiksoy]

Hi,

We are thinking about implementing bgp for internet connection  of our server.

We are currently using 200mbps bandwidth.(In future it may increase 300mbps.)

I am trying to chose which router I will use.Preferably ISR series.(ASR series are too expensive for us).

I will use this routers just for routing.

Any suggestions to choose which product or what should I consider before choosing.

Best regards.

Burak

[Jeff Van Houten · Accepted solution]

Look on Cco for a document titled router performance, but a 2951 should do what you are looking for.

Sent from Cisco Technical Support iPad App

[Joseph W. Doherty · Accepted solution]

Disclaimer

The   Author of this posting offers the information contained within this   posting without consideration and with the reader's understanding that   there's no implied or expressed suitability or fitness for any purpose.   Information provided is for informational purposes only and should not   be construed as rendering professional advice of any kind. Usage of  this  posting's information is solely at reader's own risk.

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Posting

Cisco ISR device recommendations are:

3925 100 Mbps

3945 150 Mbps

3925E 250 Mbps

3945E 350 Mbps

Cisco's recommendations tend to be very conservative; often assume you'll enable every possible service and link will always be running at full capacity.  That said, you probably not want to go smaller than a 3945 while the 3945E positions you for possible growth.

[burak-isiksoy]

Hi again,

I checked the following link and I am confused right now.Are these througputs one direction or sum of input and output.

For ISR 3945 G2 throughput is shown as 500mbps. Any ideas.

http://www.cisco.com/web/partners/downloads/765/tools/quickreference/routerperformance.pdf

[Joseph W. Doherty · Accepted solution]

Disclaimer

The    Author of this posting offers the information contained within this    posting without consideration and with the reader's understanding that    there's no implied or expressed suitability or fitness for any  purpose.   Information provided is for informational purposes only and  should not   be construed as rendering professional advice of any kind.  Usage of  this  posting's information is solely at reader's own risk.

Liability Disclaimer

In    no event shall Author be liable for any damages whatsoever  (including,   without limitation, damages for loss of use, data or  profit) arising  out  of the use or inability to use the posting's  information even if  Author  has been advised of the possibility of such  damage.

Posting

I checked the following link and I am confused right now.Are these througputs one direction or sum of input and output.
For ISR 3945 G2 throughput is shown as 500mbps. Any ideas.

Yes, the values I provided are duplex (in and out) and allow CPU to support other services.  The reference you're looking at is a theoretical maximum for one direction.  When using the latter, personally, I generally recommend dividing the throughput by 4 to both allow for duplex and other services.

The document I obtain my values from is attached (which, BTW, notes the maximum throughput of a 3945 at about 8 Gbps - document explains why they only recommend 150 Mbps).

[burak-isiksoy]

Hi,

Would it be feasible(or logical ) to use a 3650-x or 3750-x series switch instead of a router. 3750-x series has a minimum of 35mpps throughput. ( reminding that i will use these boxes just for bgp routing.)

What would be your choice.

BR.

Burak.

[Joseph W. Doherty · Accepted solution]

Disclaimer

The Author of this posting offers the information contained within this posting without consideration and with the reader's understanding that there's no implied or expressed suitability or fitness for any purpose. Information provided is for informational purposes only and should not be construed as rendering professional advice of any kind. Usage of this posting's information is solely at reader's own risk.

Liability Disclaimer

In no event shall Author be liable for any damages whatsoever (including, without limitation, damages for loss of use, data or profit) arising out of the use or inability to use the posting's information even if Author has been advised of the possibility of such damage.

Posting

A L3 switch could be a possible choice for your purpose.  Of course, realize L3 switches are feature poor compared to software based routers, but if you don't, or will not, need such features, then such might be a good choice.

Modern L3 switches can handle several hundred Mbps easily.  You'll likely need Ethernet handoff, although beware logical bandwidth caps being less than physical interface bandwidths.  Also beware that most small L3 switches that run BGP do not have the capacity to deal with full Internet route tables.

When considering L3 switches, you might want to look at "MetroEthernet" switches, as these usually have a few more features than ordinary LAN switches.