one isp two with routers

[mateomateo1]

I have to replace cisco equipmenet and looking for an advise

my current network layout:

my destination layout want to something like that:

I have a couple questions:

1) is that new network layout would be a good solution or is it better to do also 3750 redundancy,

2) we have only 1 isp, for now to access internet we use 1 static route, if we want to do the redundancy, do we have to ask our isp to do BGP for us? Is there any other way to accomplish that?

[Marwan ALshawi]

if you use at least 2x 3750 in a stack this should be ok for redundancy so you can have link and device level redundancy here

for the internet it is godd to have a seocnd link if you are loking for end to end redundncy

however using BGP or static route this is your call as both can wokr

- using eBGP with ISPs and iBGP between your two routers

- or using HSRP between your router, static to the ISP with IP SLA

hope this help

[mateomateo1]

Thank you for the answer - it is very clear

what would be the benefit of bgp against static route for internet access?

and which method would be more popular these days?

[Marwan ALshawi]

Well bgp make it more dynamic than static
However IPSLA can add some sort of automation to static routing as well
I think you need to see what is your ISP can provide then you can make the call

Hope this help
And make sure you rate the helpful posts ;)

Sent from Cisco Technical Support iPhone App

[shillings]

1) I would definitely add another 3750 to help consolidate the dual redundancy you're putting in place at the network edge. Then form a 3750 stack and provision cross-stack uplinks to your distribution and access layer switches.

2) Agree with marwanshawi above - find out what your ISP can offer. What type of technology is used for your primary circuit? If E1, then the keepalives will ensure both parties can fail across to the standby circuit with some simple static routing.

If Ethernet, then you can apply IP SLA or BGP to detect a failure within the carrier cloud and failover (i.e. your outbound traffic.) However, carriers tend to just rely on BGP to control fail over on their side (i.e. your inbound traffic.)

[ALIAOF_]

1- 2950 in HSRP or GLBP configuration

2- BGP might be costly.  You can also get a second ISP and connect one to one router and second to second router and use IPSLA

3- 3750 yeah you definitely should have that redundant as well since that is your core.