1. INTRODUCTION. Presently our’s is an ATM network, with cabletron SS2200/SS6000 edge switches, SS9000 ATM switches, cabletron Lane servers and cabletron SSR2000 IP Switch/Router.. We just could not manage the ATM network, and that is the reason we want to shift back to the good old Ethernet technology.. The maximum number of users in each sector/zone are as follows : 1. South Sector --- 100 2. East Sector --- 50 3. West Sector --- 25 4. North/Central --- 150. The IT Building in the North sector houses the “SAP Server”, the “Notes Server”, “the “Internet Proxy Server” and a few “Intranet Server”. The primary requirement of the our network is to provide the end users a connectivity to these servers. Nearly all of the network traffic consists of the packets exchanged between the end users and these servers.. As nearly 250 users are in different subnets than the subnet of the servers, all the traffic from these users to the servers are routed through the single 100 Mbps port of the router, the maximum average utilization of which is only around 4 to 5 Mbps.. There are hardly any network traffic (nearly zero) between the “South-East”, “East-West” and “South-West” sectors. The current normal maximum bandwidth utilization of the links from the “South”, “East” and “West” sector to the IT Router is only 4 to 5 Mbps.

2. LLD C/R 10/100/1000 SWITCH Two GBIC uplink ECR C/R 10/100/1000 SWITCH Two GBIC uplink NCR C/R 10/100/1000 SWITCH Two GBIC uplink IT BUILDING GIGABIT LAYER3 IP SWITCH (ROUTER) NETWORK DIAGRAM GIGABIT LAYER3 IP SWITCH WITH 12 GIGABIT UPLINKS (ROUTER) 1000 Mbps SMF IT BUILDING 10/100/1000 SWITCH Two GBIC uplink 24 Port 10/100/1000 LAYER2 SWITCH WITH TWO GIGABIT UPLINKS 1000 Mbps MMF 10.1.2.0 (VLAN2) 10.1.6.0 (VLAN6) 10.1.4.0 10.1.3.0 10.1.1.0 (VLAN1) 10.1.5.0 (VLAN5) 10.1.7.0 (VLAN7) 10.1.8.0 (VLAN8) 10.1.9.0 (VLAN9) 10.1.10.0 (VLAN10) TO IT 2970G-24TS-E 3750G-12S-E 2970G-24TS-E

3. MAIN FEATURES. ONLY ONE UPLINK SWITCH PER ZONE / SECTOR. DUAL GIGABIT UPLINK FROM EACH ZONE TO IT BUILDING LAYER3 IP SWITCH (ROUTER). ONLY ONE LAYER3 IP SWITCH (ROUTER) FOR THE ENTIRE NETWORK. IN THE ENTIRE NETWORK, CONFIGURATION REQUIRED IN ONLY 3 SWITCHES, viz. LLD SWITCH, IT BUILDING SWITCH and IT BUILDING LAYER3 IP SWITCH (ROUTER) (** LLD SWITCH supports 2 subnets. The corresponding VLANS viz. VLAN2 and VLAN6 has to be configured in the switch. ** ECR and NCR SWITCHES support only 1 subnet. The VLANS will be configured at the ROUTER end only. No configuration will be required on the individual uplink switches. ** THE IT BUILDING SWITCH supports 6 subnets. The corresponding VLANS viz. VLAN1, VLAN5,VLAN7,VLAN8,VLAN9 and VLAN10 has to be configured in the switch. ** THE IT BUILDING LAYER3 IP SWITCH (ROUTER) has to be configured for proper IP routing among the different VLANS. )

4. VLAN CONFIGURATION DETAILS. LLD switch uplink ports – Forward TAGGED VLAN2,VLAN6 frames. IT BUILDING switch uplink ports -- Forward TAGGED VLAN1,VLAN5, VLAN7, VLAN8, VLAN9 and VLAN10 frames. IT BUILDING LAYER3 IP SWITCH (ROUTER). IT to LLD uplink ports -- Forward TAGGED VLAN2,VLAN6 frames. IT to ECR uplink ports -- Classify frames as VLAN4 Forward UNTAGGED VLAN4 frames. IT to NCR uplink ports -- Classify frames as VLAN3 Forward UNTAGGED VLAN3 frames. IT to IT uplink ports -- Forward TAGGED VLAN1,VLAN5, VLAN7, VLAN8, VLAN9 and VLAN10 frames

5. LLD C/R 10/100 SWITCH Two GBIC uplink ECR C/R 10/100 SWITCH Two GBIC uplink NCR C/R 10/100 SWITCH Two GBIC uplink IT BUILDING GIGABIT LAYER3 IP SWITCH (ROUTER) NETWORK DIAGRAM (ALTERNATIVE) GIGABIT LAYER3 IP SWITCH WITH 24 Port 10/100/1000 with TWO GIGABIT UPLINKS 1000 Mbps SMF IT BUILDING 10/100/1000 SWITCH 24 Port 10/100/1000 LAYER2 SWITCH 1000 Base-T 10.1.2.0 (VLAN2) 10.1.6.0 (VLAN6) 10.1.4.0 10.1.3.0 10.1.1.0 (VLAN1) 10.1.5.0 (VLAN5) 10.1.7.0 (VLAN7) 10.1.8.0 (VLAN8) 10.1.9.0 (VLAN9) 10.1.10.0 (VLAN10) MEDIA CONVERTER VLAN1VLAN7VLAN5VLAN8VLAN10VLAN9 2970G-24TS-E 3750G-24TS-E 2970G-24T-E 24 Port 10/100/1000 LAYER2 SWITCH WITH TWO GIGABIT UPLINKS

6. MAIN DIFFERENCE. LAYER3 IP SWITCH (ROUTER) changed to 24 port Ethernet 10/100/1000 with TWO GBIC uplinks. IT BUILDING LAYER2 Switch changed to 24 Port Ethernet 10/100/1000. EACH VLAN in the IT BUILDING Switch will be connected to a corresponding DEDICATED PORT in the IP Switch (Router). Each VLAN will have a dedicated uplink port to the IP Switch (Router). VLAN CONFIGURATION CHANGES. IT BUILDING Switch uplink ports – VLAN1 -- Forward TAGGED VLAN1 frames VLAN5 -- Forward TAGGED VLAN5 frames VLAN7 -- Forward TAGGED VLAN7 frames VLAN8 -- Forward TAGGED VLAN8 frames VLAN9 -- Forward TAGGED VLAN9 frames VLAN10 -- Forward TAGGED VLAN10 frames

7. . IT BUILDING LAYER3 IP SWITCH (ROUTER). IT to IT Switch uplink ports VLAN1 -- Forward TAGGED VLAN1 frames VLAN5 -- Forward TAGGED VLAN5 frames VLAN7 -- Forward TAGGED VLAN7 frames VLAN8 -- Forward TAGGED VLAN8 frames VLAN9 -- Forward TAGGED VLAN9 frames VLAN10 -- Forward TAGGED VLAN10 frames

8. SCR C/R 24 Port 10/100 UNMANAGED SWITCH HDP W/H 16 Port 10/100 UNMANAGED SWITCH LLD W/H 16 Port 10/100 UNMANAGED SWITCH HDP C/R 24 Port 10/100 UNMANAGED SWITCH 24 PORT LLD C/R 24 Port 10/100 UNMANAGED SWITCH PP C/R 24 Port 10/100 UNMANAGED SWITCH LLD to IT UPLINK 24 Port 10/100/1000 MANAGED LAYER 2 SWITCH WITH VLAN SUPPORT VLAN 6 VLAN 2 VLAN 6VLAN 2 24 PORT PSB 24 Port 10/100/1000 UNMANAGED SWITCH TO IT VLAN2 VLAN6 10/100 UNMANAGED SWITCH WITH ONE 100 BASE-FX UPLINK 10/100/1000 MANAGED SWITCH WITH TWO GIGABIT UPLINK 100 Mbps MMF1000 Mbps SMF SOUTH SECTOR 10 PCs 8 PCs7 PCs3 PCs4 PCs 40 PCs 10/100 UNMANAGED SWITCH 100 Mbps CAT5 UTP PP W/H 16 Port 10/100 UNMANAGED SWITCH VLAN 2 2970G-24TS-E MEDIA CONVERTER 1000 Mbps CAT5e UTP 1000 Mbps MMF 10/100/1000 UNMANAGED SWITCH WITH GIGABIT UPLINK

9. Gate3-1 16 Port 10/100 UNMANAGED SWITCH ECR to IT UPLINK 24 Port 10/100/1000 MANAGED LAYER 2 SWITCH TO IT 10/100 UNMANAGED SWITCH WITH ONE 100 BASE-FX UPLINK 10/100/1000 MANAGED SWITCH WITH TWO GIGABIT UPLINK 100 Mbps MMF 1000 Mbps SMF EAST SECTOR 6 PCs 100 Mbps CAT5 UTP MEDIA CONVERTER Gate3-2 16 Port 10/100 UNMANAGED SWITCH Gate2-1 16 Port 10/100 UNMANAGED SWITCH 5 PCs 4 PCs Gate2-2 16 Port 10/100 UNMANAGED SWITCH Gate1 16 Port 10/100 UNMANAGED SWITCH 5 PCs 10 PCs ECR C/R 24 Port 10/100 UNMANAGED SWITCH 10 PCs 10/100 UNMANAGED SWITCH 2970G-24TS-E

10. SS-01 16 Port 10/100 UNMANAGED SWITCH NCR to IT UPLINK 24 Port 10/100/1000 MANAGED LAYER 2 SWITCH TO IT 10/100 UNMANAGED SWITCH WITH ONE 100 BASE-FX UPLINK 10/100/1000 MANAGED SWITCH WITH TWO GIGABIT UPLINK 100 Mbps MMF 1000 Mbps SMF WEST SECTOR 5 PCs 100 Mbps CAT5 UTP MEDIA CONVERTER CPP 16 Port 10/100 UNMANAGED SWITCH 5 PCs 10 PCs 2970G-24TS-E

11. SITE OFFICE 24 Port 10/100 UNMANAGED SWITCH W/SHOP 24 Port 10/100 UNMANAGED SWITCH CHEM. W/H 24 Port 10/100 UNMANAGED SWITCH CCR C/R 24 Port 10/100 UNMANAGED SWITCH IT to IT LAYER3 IP SWITCH UPLINK 24 Port 10/100/1000 MANAGED LAYER 2 SWITCH WITH VLAN SUPPORT TO IP SWITCH VLAN1,VLAN5,VLAN7 VLAN8,VLAN9,VLAN10 100 Mbps MMF 1000 BASE-T NORTH / CENTRAL SECTOR 100 Mbps CAT5 UTP MED CNTR 24 Port 10/100 UNMANAGED SWITCH FIRE 24 Port 10/100 UNMANAGED SWITCH ENGG. ST 24 Port 10/100 UNMANAGED SWITCH 2970G-24TS-E 24 PORT LAB 24 Port 10/100/1000 UNMANAGED SWITCH 24 PORT IT CNTR 24 Port 10/100/1000 UNMANAGED SWITCH 24 PORT IT CNTR 24 Port 10/100/1000 UNMANAGED SWITCH 24 PORT NSB 24 Port 10/100/1000 UNMANAGED SWITCH 10/100 UNMANAGED SWITCH WITH ONE 100 BASE-FX UPLINK 10/100/1000 UNMANAGED SWITCH WITH ONE GIGABIT UPLINK 10/100/1000 MANAGED SWITCH WITH TWO GIGABIT UPLINK 10/100 UNMANAGED SWITCH MEDIA CONVERTER 10/100/1000 UNMANAGED SWITCH 1000 Mbps MMF

12. 24 PORT SITE OFFICE 24 Port 10/100 UNMANAGED SWITCH W/SHOP 24 Port 10/100 UNMANAGED SWITCH 24 PORT IT CNTR 24 Port 10/100/1000 UNMANAGED SWITCH IT to IT LAYER3 IP SWITCH UPLINK 24 Port 10/100/1000 MANAGED LAYER 2 SWITCH WITH VLAN SUPPORT 24 PORT NSB 24 Port 10/100/1000 UNMANAGED SWITCH TO IP SWITCH VLAN1 10/100 UNMANAGED SWITCH WITH ONE 100 BASE-FX UPLINK 100 Mbps MMF 1000 BASE-T NORTH / CENTRAL SECTOR (ALTERNATIVE) 10/100 UNMANAGED SWITCH 100 Mbps CAT5 UTP MEDIA CONVERTER 24 Port 10/100/1000 LAYER2 SWITCH 24 PORT LAB 24 Port 10/100/1000 UNMANAGED SWITCH MED CNTR 24 Port 10/100 UNMANAGED SWITCH 24 PORT IT CNTR 24 Port 10/100/1000 UNMANAGED SWITCH FIRE 24 Port 10/100 UNMANAGED SWITCH VLAN5VLAN7VLAN8VLAN9 VLAN10 CHEM. W/H 24 Port 10/100 UNMANAGED SWITCH CCR C/R 24 Port 10/100 UNMANAGED SWITCH ENGG. ST 24 Port 10/100 UNMANAGED SWITCH 2970G-24T-E 10/100/1000 UNMANAGED SWITCH WITH ONE GIGABIT UPLINK 10/100/1000 UNMANAGED SWITCH 1000 Mbps MMF