Solved

switch

Posted on 2013-07-01
1
289 Views
Last Modified: 2013-07-05
Hi,

I am looking for a switch that forwards IP multicast in hardwar than the software.
I found Catalyst 4500 series switches but are there more choices?trying to lower the cost?

KJ

IP Multicast on the Catalyst 4500 Series Switch

The Catalyst 4500 series switch supports an ASIC-based Integrated Switching Engine that provides Ethernet bridging at Layer 2 and IP routing at Layer 3. Because the ASIC is specifically designed to forward packets, the Integrated Switching Engine hardware provides very high performance with ACLs and QoS enabled. At wire-speed, forwarding in hardware is significantly faster than the CPU subsystem software, which is designed to handle exception packets.
The Integrated Switching Engine hardware supports interfaces for inter-VLAN routing and switchports for Layer 2 bridging. It also provides a physical Layer 3 interface that can be configured to connect with a host, a switch, or a router.
0
Comment
Question by:JCORION
1 Comment
 
LVL 7

Accepted Solution

by:
unfragmented earned 500 total points
ID: 39293535
Cisco switches are going to forward multicast in hardware (ie using an ASIC), as generally their general CPU isn't very powerful.  Layer 2 forwarding is pretty trivial.  Obviously you will need a layer 3 switch to forward multicast between layer 3 networks.  Catalyst 3750's (with the ipservices license) will do L3 multicast just fine.  Catalyst 29xx switches won't do L3, but will do L2 just fine.

Note the 'caveat' around 'exception packets'.  Tunnelled packets, PIM registers, and other packets that need processing by the control plane will impact the general CPU.

Cisco does promote the idea of 'forwarding in hardware' as it has a lot of investment in ASIC development.  I see it as neither right no wrong - just something to be aware of, as it is something their marketing people love to push.
0

Featured Post

PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
gns3 with layer 3 switch 6 65
NEXUS3524 - SFP validation failed 3 57
Vlan to Vlan communication 9 102
Non-jumbo host to jumbo enabled switch: Will it work? 3 16
I see many questions here on Experts Exchange regarding switch port configurations and trunks. This article is meant for beginners in the subject to help to get basic knowledge about Virtual Local Area Network (VLAN (http://en.wikipedia.org/wiki/Vir…
This tutorial will go through the steps required to write a script that will back up the configuration settings of a HP-ProCurve switch. You will need to get the following things to follow this tutorial: Telnet Scripting Tool e.g. TST10.exe …
This Micro Tutorial demonstrates using Microsoft Excel pivot tables, how to reverse engineer competitors' marketing strategies through backlinks.
Finds all prime numbers in a range requested and places them in a public primes() array. I've demostrated a template size of 30 (2 * 3 * 5) but larger templates can be built such 210  (2 * 3 * 5 * 7) or 2310  (2 * 3 * 5 * 7 * 11). The larger templa…

785 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question