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need basic BGP config help for a Cisco Switch

Posted on 2011-10-31
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Last Modified: 2012-05-12
Hi
i am setting up a new ISP connection and need some help.
The ISP will give me a /24 with 2 links (to 2 different routers of theirs, going out 2 different telecom circuits) and then both of those will connect to my Cisco 3560G switch. They said to use BGP.
They are my only ISP and yes i'm only using 1 switch on my end.

Here's the setup and info they gave me:

Link 1:  
ISP IP 1.1.1.209/30
My IP 1.1.1.210
My port # GigabitEthernet0/1

Link 2:
ISP IP 1.1.1.213/30
My IP 1.1.1.214
My port # GigabitEthernet0/2

AS # 65533 (internal BGP i believe)

The IP's for my equipment are 2.2.2.0/0
so i want my switch to be 2.2.2.1

then, i can configure the ports to my firewall and stuff on my own.

can anyone help me, maybe with a sample config for the cisco to cover the BGP and interfaces?

Thanks!

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Question by:tabush
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Don Johnston earned 2000 total points
ID: 37060037
int g0/1
 no switchport
 ip address 1.1.1.210 255.255.255.252
 no shut
int g0/2
 no switchport
 ip address 1.1.1.214 255.255.255.252
 no shut
!
router bgp 65533
 neighbor 1.1.1.209 remote-as <whatever their AS is>
 neighbor 1.1.1.213 remote-as <whatever their AS is>

There can be a LOT more depending on the requirements (interior routing protocol, summarization, redistribution, advertised networks, router ID, etc.)
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by:tabush
ID: 37060057
Thanks. Would I use 65533 for their AS also? And based on this do I need a line like "ip route 0.0.0.0 0.0.0.0 (next hop)? Or do the bgp lines do that?
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Expert Comment

by:Don Johnston
ID: 37060083
>Thanks. Would I use 65533 for their AS also?

If that's their AS.

>And based on this do I need a line like "ip route 0.0.0.0 0.0.0.0 (next hop)? Or do the bgp lines do that?

BGP could provide you with a default route.  

The thing is, whole books are written on the configuration and operation of BGP. This is kind of like a "How do I configure my switch" question. There are TONS of variables.
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Author Comment

by:tabush
ID: 37060206
understood... thanks for the info!
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