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

[Mikael Abrahamsson]

On Mon, 19 Apr 2010, Rick Kunkel wrote:

I don't remember the details exactly, but someone told me that the asic 
handling port 1-6 only has 1 gigabit/s connectivity to the asic handling 
7-8.

Avoid the 3508 at all cost is my recommendation, the 3550-12G is a far 
better product.

> How bizarre... Could this be true?  Would that screw with any etherchannels 
> that were using ports 1-6?
>
> --Rick
>
> On Mon, 19 Apr 2010, Sven 'Darkman' Michels wrote:
>
>> Hi,
>> 
>> if i remember correctly, the 3508 has limited line rates of around
>> 700mbit/s on the first 6 ports, only port 7 and 8 will do full 1gbit/s.
>> So you might add this to your list (or when i'm wrong, just ignore it ;)
>> 
>> Regards,
>> Sven
>> 
>> Joseph Karpenko schrieb:
>>> 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,
>>> 
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-- 
Mikael Abrahamsson    email: swmike at swm.pp.se