Narizz28
MIS
- Mar 8, 2001
- 161
Scenario: 2 Internet T1's via one provider terminating on the same router at the ISP. 2 Routers, each conencted to one of the T1's (1720's).
In the past, I have used 1 router for 2 T1's without issue. In this setup, I would typically use HSRP for fault tolerence. However, a new requirement has been assigned, load balancing between the two routers. I have investigated, and found that the newer GLBP set will do what I want with it's basic defaults in round-robin mode.
My question is (finally), do I need to make any changes to the PIX's (sitting behind the routers) ARP settings so that it refreshes faster taking full advantage of the 2 paths?
As I understand it, GLBP sets the virtual MAC addresses on the routers, and the AVG will answer an ARP request of the virtual gateway address with the MAC address of the next AVF in line in the round robin. How long will the PIX cache the ARP respnse before it requests again? Has anyone succesfully implemented GLBP in this type of configuration? You thought's and experiences are very welcome.
In the past, I have used 1 router for 2 T1's without issue. In this setup, I would typically use HSRP for fault tolerence. However, a new requirement has been assigned, load balancing between the two routers. I have investigated, and found that the newer GLBP set will do what I want with it's basic defaults in round-robin mode.
My question is (finally), do I need to make any changes to the PIX's (sitting behind the routers) ARP settings so that it refreshes faster taking full advantage of the 2 paths?
As I understand it, GLBP sets the virtual MAC addresses on the routers, and the AVG will answer an ARP request of the virtual gateway address with the MAC address of the next AVF in line in the round robin. How long will the PIX cache the ARP respnse before it requests again? Has anyone succesfully implemented GLBP in this type of configuration? You thought's and experiences are very welcome.