06-10-2008 12:25 AM - edited 03-03-2019 10:17 PM
Hi all,
I need your advise for a home lab for mainly CCIE Security and R&S and I need switching advises.
2x3550 as core layer
2x2950 as distribution layer
2x2950 as access layer
This is what I think of for a proper lab. Or should I consider having different models for distribution layer. Have you ever had bad experience with ebay for this issue?
Regards
06-10-2008 12:32 AM
replace the 2950 with 3550 at the distribution layer as it not a Layer 3 device
Narayan
06-10-2008 01:16 AM
Thanks Narayan. Should I increase the model of core layer switches in this case?
06-10-2008 01:38 AM
Or can I utilize 2950s for core layer since core is pure switching? Would that lab cover latest blueprint ?
06-10-2008 02:26 AM
The latest blueprint asks for 2 x 3560's and hence replacing them with a 3550 would be beneficial. The 3560's are a bit expensive but u can get try to get hold of 8 port model which should be cheap.
Core layer is designed for fast processing of packets and hence spanning tree is not extended to this layer. you would require L3 links to your distribution which the 2950 would not be able to provide
Narayan
06-10-2008 12:22 PM
"Core layer is designed for fast processing of packets and hence spanning tree is not extended to this layer"
Does STP affect switching? As I know Core swithces become the root bridge for STP operations that affect switching and consume switch resources like intervlan routing, routing, qos, filterings, access-lists take place in distribution layer and core layer switches utilizes their resources for these tailored frames by dist layer, pure switching.
"you would require L3 links to your distribution "
L3 links? Can you describe this please?
Thanks!
06-10-2008 02:31 PM
Yes you need L3 on the distribution in to the Core layer.
Core layer: This layer is considered the backbone of the network and includes the high-end switches This layer of the network does not route traffic at the LAN. In addition, no packet manipulation is done by devices in this layer. Rather, this layer is concerned with speed and ensures reliable delivery of packets.
Distribution layer: This layer includes LAN-based routers and layer 3 switches. This layer ensures that packets are properly routed between subnets and VLANs in your enterprise. This layer is also called the Workgroup layer.
layer 3 handles the routing of the data (sending it in the right direction to the right destination on outgoing transmissions and receiving incoming transmissions at the packet level). The L3 does routing and forwarding. Routers and Multilayer switches are part of this layer.
06-11-2008 04:25 PM
Thanks anyway
Find answers to your questions by entering keywords or phrases in the Search bar above. New here? Use these resources to familiarize yourself with the community: