[c-nsp] Diff between 3508G and 3550-12G

[Joseph Karpenko]

here is some data on the 3508G and 3550-12G and i've also included
some info on the 2960G-24TC.  check out the values listed for both
the switch-fabric and forwarding-rate between the 3 switches.  i'd
also note that the 3550-12G is 1.5 RU -- not sure if rack space is
an issue, but wanted to point that out.

not sure if that helps in your decision but the 2960G-24TC is also
another one that'll will double your port-density and provide more
throughput.  all just depends on what which features you require.


3508G
------------------------------------------------------
Form Factor:         1 RU
Switch Fabric:       10.8 Gbps
Forwarding Rate:     8 Mpps
Ports:               GBIC (8), 10/100/100 (0)
VLAN Trunking:       All Ports
EtherChannel:        All Ports
VLANs:               250 (64 max STP instances)
Voice-VLAN Capable:  Yes
Multi-VLAN Capable:  All Ports
Max MAC Addresses:   8,000
Max MTU:             2,018
Multicast:           CGMP Only
Ingress Policing:    None
QoS Granularity:     N/A
DSCP/CoS Remarking:  No
Layer 3:             No


3550-12G
------------------------------------------------------
Form Factor:         1.5 RU
Switch Fabric:       24 Gbps
Forwarding Rate:     17 Mpps
Ports:               GBIC (10), 10/100/100 (2)
VLAN Trunking:       All Ports
EtherChannel:        All Ports
VLANs:               4000 IDs max (up to 1024 which
                     can be configured at one time)
                     128 max STP instances
Voice-VLAN Capable:  Yes
Multi-VLAN Capable:  No
Max MAC Addresses:   12,000
Max MTU:             2,000
Multicast:           ICMP/PIM(L3) (8,000 group max)
Policing:            Ingress and Egress
                       * 8 per 10/100 port
                       * 128 per 1000 port
QoS Granularity:     8Kbps-100Mbps (10/100 ports)
DSCP/CoS Remarking:  Yes
Layer 3:             Full L3 license included


2960G-24TC
------------------------------------------------------
Form Factor:         1 RU
Switch Fabric:       32 Gbps
Forwarding Rate:     35.7 Mpps
Ports:               10/100/1000 (24)
VLAN Trunking:       802.1q Only
EtherChannel:        All Ports
VLANs:               
Voice-VLAN Capable:  Yes
Multi-VLAN Capable:  No
Max MAC Addresses:   8,000
Max MTU:             9,000
Multicast:           IGMP Snooping in hardware (255
                     groups max)
Ingress Policing:    None
QoS Granularity:     1Mbps
DSCP/CoS Remarking:  Yes


additional information can be obtained from the following links:
<http://docs.google.com/gview?url=http://www.cisco.com/web/partners/downloads/765/tools/quickreference/switchperformance.pdf>
<http://docs.google.com/gview?url=http://www.cisco.com/web/partners/downloads/765/tools/quickreference/catalyst3x00.pdf>
<http://docs.google.com/gview?url=http://www.cisco.com/web/partners/downloads/765/tools/quickreference/cat29-eng.pdf>


regards,

-- 

/karpenko

[*] on 20100419-10:33:49 -0700, Rick Kunkel wrote:
> Hello folks,
> 
> A (hopefully) quick question...
> 
> What are the primary differences between the 3508G and the
> 3550-12G?  We're going to be using one or the other as a sort of
> layer 2 distribution switch for shared colocation.  I've been
> told that it's not so much a difference of processing and packet
> switching performace, but more one of features.  Does anyone
> have any insight?  I just don't want to tell the purchasers to
> buy the less expensive switch if it might not cut the mustard.
> I don't really require any more "features" than etherchannel and
> VLANs....
> 
> Thanks,
> 
> Rick