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GigaEthernet to ISP

We will have a fiber link ( Gigabit Ethernet ) between the office and ISP

ISP will limit the traffic to 30M

What is the best device to terminate the fiber link coming from the ISP, Router ( 3845 or 7200 ) OR Switch ( 3560G ) ?

What is the best practice for this setup ?

regards

Mohamed

9 REPLIES
Hall of Fame Super Silver

Re: GigaEthernet to ISP

Hello Mohamed,

if you need to do also NAT you need a router and a c3845 is a good choice with space for some rate growth.

if you don't do NAT you can think to use a C3560G.

Be aware that a router gives you more features and the capability to scale better in the signalling plane (number of BGP routes if used)

a multilayer switch provides you much more forwarding plane capacity

Hope to help

Giuseppe

Hall of Fame Super Gold

Re: GigaEthernet to ISP

What do you currently have? Generally speaking, a true router is always preferable for facing the Internet, as it can do FW/NAT/VPN and many other things as well.

Super Bronze

Re: GigaEthernet to ISP

The "best" device is one that both can deliver the performance you require and the features you require. Excluding growth, you've noted one attribute of performance, the 30M, but little in the requirements of features beyond gig Ethernet.

As the other posters have already noted, routers often are more feature rich, L3 switches often provide more perforamance. For 30M, besides the 3845 and 7200, the 3825, 2851 and 2821 routers might be suitable.

Another series of devices you might want to examine, are Cisco's Metro Ethernet switches, e.g. 3750 Metro Series. Such switches often provide the performance of ordinary "LAN" switches with additional features.

Re: GigaEthernet to ISP

Hi,

The 3845 should be sufficent for handling 30Mbps.

The 7200 with Sup720 is produced to handle upto 400Mpbs IPv4 traffic and 200Mbps IPv6 traffic.

HTH

Mohamed

Hall of Fame Super Gold

Re: GigaEthernet to ISP

Mohamed, perhaps you mean a 7200 with NPE-400 to have these performances.

Re: GigaEthernet to ISP

Hi Paulo,

I meant Supervisor Engine 720 with Integral MSFC3.

HTH

Mohamed

Hall of Fame Super Gold

Re: GigaEthernet to ISP

Ok, but not on the 7200 and certainly not 400 Mbps. These are figures for ISR routers nowadays

Re: GigaEthernet to ISP

Hi Paulo,

Its for (6500,7600) series.

Pls have a look at the attached document.

HTH

Mohamed

Hall of Fame Super Gold

Re: GigaEthernet to ISP

400 Mpps, not Mbps. That is about 500 times more :)

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