Switch Multi-Layer (Layer-3) how to route!

[eliasmotta]

Switch Multi-Layer (Layer-3)

hello community, I need help in this topology.

network topology.

# Switch / 1000 CISCO - SG300 28P - SW CORE

# Switch / 1000 CISCO - SG300 28P - SW DISTRIBUTION

# Switch / 100 CISCO - SF300 28P - SW ACCESS PRODUCTION

# Switch 3com / 1000 8P - SW ACCESS CAD

# HP switch / 16P 100 - SW ACCESS ADMIN

# HP / 100 switch 16P - SW DIR ACCESS

VLAN1 - IT - 192.168.1.0/24
VLAN2 - PRODUCTION - 192.168.2.0/24
VLAN3 - CAD - 192.168.3.0/24
VLAN4 - ADMIN - 192.168.4.0/24
VLAN5 - DIR - 192.168.5.0/24
VLAN6 - MEETING - 192.168.6.0/24
VLAN7 - SERVICE - 192.168.7.0/24
VLAN8 - CONNECTIVITY ASSETS - 192.168.8.0/24
VLAN9 - PRINTERS - 192.168.9.0/24
VLAN10 - SERVERS - 192.168.10.0/24
VLAN11 - DVR CAMERA - 192.168.11.0/24
 

my intention is to make up the subnets communicate to achieve the server, also i would to enable relay dhcp to receive the ip from the server that is at the swcore.

Doubts;

- Where i set ips interfaces? sw-core or sw-distr? or both? 

- What are the steps to make this scopo to work?

- I could not enable spanning tree that sw model.

Thank you so much,

[Michal Bruncko]

hello

there are two options how to set them up:

• do all routing including IP interfaces on core switch
• do routing on both distrbution (for VLANs within yellow rectangle only) and core (for rest of VLANs) switches

both are valid, both depend on many factors, like:

• if you are going to use f.e. VLANs from yellow group in another areas
• between what parties is majority of traffic (i.e. if within yellow part, between VLANs in yellow and green, or blue)

and each has its own advantages/disadvantages:

• doing all routing on core switch simplifies setup, configuration and overall NW structure in comparison to second option
• but having routing done on distribution switches can reduce BW consumption on link between core and dist switches for traffic within yellow group. but routing is a bit more complex.

> What are the steps to make this scopo to work?

obviously to make connectivity working between all parties you have to set up both manageable switches (core and dist). other switches from yellow group you can keep untouched. and configuration steps are pretty clear:

1. do basic switch setup (user account configuration, hostname, select interfaces for uplinks/downlinks, give them description)
2. L2 configuration (create VLANs, assign VLANs to existing ports, be aware to properly select access and trunk ports with proper VLAN assignment)
3. L3 configuration (create L3 VLAN interfaces, setup routing (depends of scenario), do helper address, do ping tests)
4. finish switch setup (NTP configuration, DNS configuration)