BGP Session

Sat Jul 19 17:23:12 UTC 2014

On Sat, Jul 19, 2014 at 10:12 AM, Abuse Contact
<stopabuseandreport at gmail.com> wrote:
> Yeah, we're using it for an anycasted node but like, I'm confused on certain
> parts like, just a really basic question.
> When doing things like
>
> conf t
> router bgp AS1337
>
> neighbor 208.54.128.0 remote-as AS13335
> neighbor 208.54.128.0 description BGP with Upstream
> neighbor 208.54.128.0 password "lolpass"
>
> address-family ipv4
> no synchronization
> neighbor 208.54.128.0 activate
> neighbor 208.54.128.0 soft-reconfiguration inboung
>
> I'm confused on when doing this, would I need to state like
>
> First go to AS13335 then go to TATA then go to my server or would it just
> automatically do that or would my provider do that? I'm confused on that.
> how would I state multiple peers.....?

AS13335 is Cloudflare.
How does TATA relate? You have a deicated server connected to TATA and
Cloudflare? I'm skeptical.

You really ought to do some more reading, learning, and practicing
before running public BGP.

I would recommend reading this book cover-to-cover:
http://www.bgpexpert.com/'BGP'-by-Iljitsch-van-Beijnum/
It's only ~250 small pages.
To practice and experiment, emulate some example configurations with
GNS3 and Dynamips, or some Linux VMs with Quagga or BIRD.

>
>
> On Sat, Jul 19, 2014 at 10:06 AM, Jonathan Lassoff <jof at thejof.com> wrote:
>>
>> An Anycasting node. For example, as part of a reliable DNS service.
>> A /24 is usually the smallest prefix length that is portably accepted.
>>
>> Also, applications where connections need to appear to be coming from many
>> source IPs.
>>
>>
>> On Saturday, July 19, 2014, Suresh Ramasubramanian <ops.lists at gmail.com>
>> wrote:
>>>
>>> A single linux box with a whole /24 on it? What sort of use case is that,
>>> BTW?
>>>  On 19-Jul-2014 10:26 pm, "Abuse Contact" <stopabuseandreport at gmail.com>
>>> wrote:
>>>
>>> > I know, the DC is going to be giving me a BGP session on their router
>>> > so I
>>> > can set it up, I'm not using a Linux server as a router.
>>> >
>>> >
>>> > On Sat, Jul 19, 2014 at 9:04 AM, William Herrin <bill at herrin.us> wrote:
>>> >
>>> > > On Wed, Jul 16, 2014 at 4:05 AM, Abuse Contact
>>> > > <stopabuseandreport at gmail.com> wrote:
>>> > > > So I just purchased a Dedicated server from this one company and I
>>> > have a
>>> > > > /24 IPv4 block that I bought from a company on WebHostingTalk, but
>>> > > > I am
>>> > > > clueless on how to setup the /24 IPv4 block using the BGP Session.
>>> > > > I
>>> > want
>>> > > > to set it up to run through their network as if it was one of their
>>> > IPs,
>>> > > > etc. I keep seeing things like iBGP (which I think means like a
>>> > > > inner
>>> > > > routing BGP) and eBGP (what I'm talking about??) but I have no idea
>>> > > > how
>>> > > to
>>> > > > set those up or which one I would need.
>>> > >
>>> > > Howdy,
>>> > >
>>> > > Unless you have (1) a real router available, not a just a server and
>>> > > (2) an expert available to help you with your first BGP configuration
>>> > > I strongly recommend you simply ask your service provider to announce
>>> > > the /24 to the Internet on your behalf.
>>> > >
>>> > > Server-based BGP software like Quagga for Linux is reasonably good
>>> > > but
>>> > > it should absolutely not be involved in your _first_ attempt to
>>> > > connect with the Internet's default-free zone. Simple mistakes with
>>> > > eBGP can cause tremendous damage to other folks on the Internet.
>>> > > Trial
>>> > > and error is simply not OK. If it isn't worth it to you to buy a
>>> > > BGP-capable router then you also aren't prepared to make the
>>> > > investment in learning it takes to use BGP without causing harm.
>>> > >
>>> > > Regards,
>>> > > Bill Herrin
>>> > >
>>> > >
>>> > > --
>>> > > William Herrin ................ herrin at dirtside.com  bill at herrin.us
>>> > > Owner, Dirtside Systems ......... Web: <http://www.dirtside.com/>
>>> > > Can I solve your unusual networking challenges?
>>> > >
>>> >
>
>