Efficient Solutions for VLAN and DHCP Management
Implement new VLAN configurations, DHCP filtering, and optimize routing for improved network functionality. Solutions include VLAN 33 and 34 setup, dual DHCP server setup, and addressing suboptimal routes. Explore ways to enhance network performance and streamline operations.
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Presentation Transcript
Solution 1: Use New Vlan DHCP filter For vlan 33 Vlan 34 192.168. 192.168.33.1 Solution 1: [1] change vlan 33 attached to SG500 to new vlan (vlan 34) [2] SG500 as DHCP server for vlan 34 [3] DHCP ACL filter for vlan 33 on SG500 ip access-l ext DHCP deny udp an bootpc an bootps int vlan 33 service input DHCP default-action permit-any //filter out the DHCP request from client to this vlan, allow other packets
Solution 2: Add L2 Switch Solution 2: [1] add a L2 switch between router & SG500 [2] use ACL to filter DHCP for vlan 33 in SG500 [3] migrate all vlan 33 from SG500 to the new L2 switch router Vlan 50 SG500 DHCP filter For vlan 33 Vlan 33 L2 switch
Solution 3: Dual DHCP Server DHCP Server For vlan 33 192.168.33.2 Router 192.168.33.1 MAC: 0000.0000.0001 GW: SG500 Solution 3: [1] both router and SG500 as DHCP server for vlan 33 [2] SG500 use DHCP host pool for vlan 33 to prevent any allocation Ip dhcp server Ip dhcp pool host 33 Add 192.168.33.1 /24 hardware 0000.0000.0001 // MAC of router //this add will never be assigned since it s already used by router
Suboptimal Route SG 500 as Default Gateway PC2 192.168.33.200 GW: SG 500 ? SG 500 192.168.33.2 vlan 33 192.168.50.2 vlan 50 Routing Table: 0.0.0.0/0 192.168.33.1 192.168.33.0/24 192.168.33.2 192.168.50.0/24 192.168.50.2 PC1 192.168.33.100 GW: SG 500 Internet Router 0.0.0.0/0 12.100.100.78 PC5 192.168.50.100 GW: SG 500 Router 192.168.33.1 DHCP pool for vlan 33 GW: SG500 PC2-> Internet ? Suboptimal PC2-> Router(L2)-> SG500(L3)->Router(L2)->Router(L3)->Internet PC2<-> PC1 PC2<-> Router(L2)->SG500(L2)<->PC1 PC2-> PC5 PC2-> Router(L2)->SG500(L3)->PC5 PC1/PC5 -> Internet PC1/PC5 -> SG500(L3)->Router(L2)->Router(L3)->Internet PC1<-> PC5 PC1<-> SG500(L3)<->PC5 Routing table: 0.0.0.0/0 12.100.100.78 192.168.33.0/24 192.168.33.1 192.168.50.0/24 192.168.33.2 Solution Migrate PC2 from Router to SG500
Suboptimal Route Router as Default Gateway PC2 192.168.33.200 GW: Router ? SG 500 192.168.33.2 vlan 33 192.168.50.2 vlan 50 Routing Table: 0.0.0.0/0 192.168.33.1 192.168.50.0/24 192.168.50.2 192.168.33.0/24 192.168.33.2 PC1 192.168.33.100 GW: Router ? Internet Router 0.0.0.0/0 12.100.100.78 PC5 192.168.50.100 GW: SG 500 Router 192.168.33.1 DHCP pool for vlan 33 GW: self PC2-> Internet PC2-> Router(L3)-> Internet PC2-> PC5 ? Suboptimal PC2-> Router(L3)->Router(L2)->SG500(L3)->PC5 PC1-> Internet PC1-> SG500(L2)->Router(L3)->Internet PC1-> PC5 ? Suboptimal PC1-> SG500(L2)->Router(L3)->SG500(L3)->PC5 PC5-> PC1 PC5-> SG500(L3)->PC1 PC5-> Internet PC5-> SG500(L3) ->Router(L2)->Router(L3)->Internet Routing table: 0.0.0.0/0 12.100.100.78 192.168.33.0/24 192.168.33.1 192.168.50.0/24 192.168.33.2 Solution SG500 as GW PC2 -> SG500
