[88890] in North American Network Operators' Group
Re: Cisco 3550 replacement
daemon@ATHENA.MIT.EDU (Warren Kumari)
Wed Feb 22 12:27:47 2006
In-Reply-To: <ae6373410602220544g3d70885aqe954d710bec23484@mail.gmail.com>
Cc: nanog@merit.edu
From: Warren Kumari <warren@kumari.net>
Date: Wed, 22 Feb 2006 09:27:20 -0800
To: Aaron Daubman <daubman@gmail.com>
Errors-To: owner-nanog@merit.edu
Perhaps this thread would be more appropriate for the Cisco-NSP list?
Warren
On Feb 22, 2006, at 5:44 AM, Aaron Daubman wrote:
>
>> And no hierarchial QoS, which was requirement of the original =20
>> poster,
>> of course 3550 offer no such either.
>
> IIRC, the only switch to currently support HQF is the 3750 Metro =20
> Series:
> http://www.cisco.com/en/US/products/hw/switches/ps5532/=20
> products_qanda_item09186a00801eb822.shtml
>
> """
> Q. What is the difference between the Cisco Catalyst 3750 Metro Series
> and the Cisco Catalyst 3750 Series?
> The Cisco Catalyst 3750 Metro Series is built for Metro Ethernet
> access in a customer location, enabling the delivery of more
> differentiated Metro Ethernet services. These switches feature
> bidirectional hierarchical QoS and Traffic Shaping; intelligent 802.1Q
> tunneling with class-of-service (CoS) mutation; VLAN translation;
> MPLS, EoMPLS, and Hierarchical Virtual Private LAN Service (H-VPLS)
> support; and redundant AC or DC power. They are ideal for service
> providers seeking to deliver profitable business services, such as
> Layer 2, Layer 3, and MPLS VPNs, in a variety of bandwidths and with
> different SLAs. With flexible software options, the Cisco Catalyst
> 3750 Metro Series offers a cost-effective path for meeting current and
> future service requirements from service providers.
> The standard Cisco Catalyst 3750 Series is an innovative product line
> for midsize organizations and enterprise branch offices. Featuring
> Cisco Systems(r) StackWise=99 technology, Cisco Catalyst 3750 Series
> products improve LAN operating efficiency by combining
> industry-leading ease of use and high resiliency for stackable
> switches.
> """
>
>> 32Gbps Backplane (Counted packet-in, packet-out, each direction, =20
>> with all
>> packets the same size, multicast?) and 52 GE interfaces.
>> Not exactly non-blocking.
>> Gotsta do the CiscoMath.
>
> The 1U with the best blocking ratio is the 4948:
> http://www.cisco.com/en/US/products/ps6021/=20
> products_data_sheet0900aecd8017a72e.html
> "96 Gbps nonblocking switch fabric"
> However, I'm unsure of the details of its QoS support?
>
> Regards,
> ~Aaron
>
