a) If both 3750-Switch1 and 3750-Switch2 are configured as stackwise (cable), what should I consider and configure on port fa1/0/20 on both switches Switch1 and Switch2 if I want to connect (2) routers connected to different ISPs to the 3750 switches?
Should I run iBGP in the 3750 switch in order to make it pick Router1-ISP1 as the preferred route and Router2-ISP2 as my lower priority local preference? Is that it?
b) Is that the typical design you would do, or should I plan to connect another interface (fa0/1) of both routers to the other switch, so that could give me additional redundancy. Please let me know if you guys are doing that.
If you own your own address space you can just use the stackwise connection and just configure HSRP on the ISP routers and track the wan link to ISP.
BGP can also be used but when you do a stackwise connection the whole unit behaves as one switch and there is no need to confogure IBGP. you can either set weight or local preference for routes received from the ISP routers and make the routing decision.
You can set IP addresses on the ports in the stack just as a normal L3 switch by using the no switchport. The stackwise doesn't change the behavior of the switch but just makes it a single unit connected over a 32 Gbps bus. The command however would change as the interfaces of the 2nd switch would chnage to int fa 2/0/20
Hi everyone, I would like to thank you in advance for any help you can provide a newcomer like myself!
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