RE: BGP Neighbor originated routes

From: Kaiser Anwar <Kaiser_anwar_at_hotmail.com>
Date: Sat, 12 Jan 2013 11:41:02 -0600

Thanks, anyone knows of command to see what you are advertising to your ISP
peer to make sure you are advertising what you are supposed to??

Thanks

-----Original Message-----
From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of
ccie99999
Sent: Saturday, January 12, 2013 9:13 AM
To: Kaiser Anwar
Cc: Cisco certification
Subject: Re: BGP Neighbor originated routes

then filter:

ip as-path access-list 1 permit _1234_

route-map AVOID_TRANSIT deny 10
 match as-path 1
route-map AVOID_TRANSIT permit 20

router bgp 1234
 network x.x.x.x x.x.x.x
 neighbor y.y.y.y route-map AVOID_TRANSIT out

should work... test it before in a lab

On Sat, Jan 12, 2013 at 2:57 PM, Kaiser Anwar
<Kaiser_Anwar_at_hotmail.com>wrote:

> We do have a multi home scenario and makes sense to only advertise
> your network. ****
>
> ** **
>
> Thanks ****
>
> ** **
>
> *From:* ccie99999 [mailto:ccie99999_at_gmail.com]
> *Sent:* Saturday, January 12, 2013 8:50 AM
> *To:* Kaiser Anwar; Cisco certification
>
> *Subject:* Re: BGP Neighbor originated routes****
>
> ** **
>
> It depends. Do you have a multi-home scenario and therefore you peer
> with another AS?****
>
> If so, probably you don't want to become a transit AS, show you should
> permit out only your AS (_1234$)****
>
> Otherwise redistribute your network into bgp, summarize it or install
> the prefixes you have with network command. ****
>
> someone correct me please if I am wrong. ****
>
> ** **
>
> ** **
>
> On Sat, Jan 12, 2013 at 2:39 PM, Kaiser Anwar
> <Kaiser_Anwar_at_hotmail.com>
> wrote:****
>
> So the same on if I want to allow only my network to the ISP outbound.
> I should apply the same type access list outbound ****
>
> ****
>
> *From:* ccie99999 [mailto:ccie99999_at_gmail.com]
> *Sent:* Saturday, January 12, 2013 8:18 AM
> *To:* Kaiser Anwar
> *Cc:* Cisco certification
> *Subject:* Re: BGP Neighbor originated routes****
>
> ****
>
> that's correct.. ****
>
> test it using show ip bgp regex _1234$ (where 1234 is the AS where
> routes are originated)****
>
> ****
>
> ****
>
> On Sat, Jan 12, 2013 at 2:14 PM, Kaiser Anwar
> <Kaiser_anwar_at_hotmail.com>
> wrote:****
>
> Hi,
>
> Just checking to make this is the correct command to make sure I only
> get the ISP originated routes
>
> ip as-path access-list 1 permit _1234$
>
> Thanks
>
>
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Received on Sat Jan 12 2013 - 11:41:02 ART

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