Tag Archives: 2 ISP

Cisco IOS – NAT failover with 2 ISP

Example Configuration 2 ISP interface FastEthernet0/0 Description Primary link ISP1 ip address 12.x.x.x 255.255.255.240 ip nat outside interface FastEthernet1/0 Description Secondary link ISP2 ip address 76.x.x.x. 255.255.255.0 ip nat outside interface FastEthernet1/1 Description Inside LAN segment ip address 172.168.60.1 255.255.255.0 … Continue reading

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CISCO IOS – Load Balance 2 ISP

Load Balance 2 ISP with Cisco Dedicate one ISP between two by the destination TCP/UDP port number OER on Routers (without BGP; just static routes) Redundant Link Graceful Internet Load Balance/Failover IP SLA Load Balance – Sample Configuration and Workaround … Continue reading

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CISCO IOS – Dual Internet Connections without BGP enabled ISP

Dual-homed environments with different ISPs have usually meant that BGP must be used and that both ISPs must support BGP routing. Throughout this tutorial, I will show you how you can have mulitple ISPs without BGP or provider independant IP … Continue reading

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CISCO IOS NAT Load-Balancing with Optimized Edge Routing for Two Internet Connections

track timer interface 5 ! ! Configure timers on route tracking ! track 123 rtr 1 reachability delay down 15 up 10 ! track 345 rtr 2 reachability delay down 15 up 10 ! ! Use “ip dhcp client route … Continue reading

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