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Thanks James.

Could you please let me know Quagga version which supports route redistribution(PBR) in BGP.

Thanks,
Ankaiah.

-----Original Message-----
From: James Carlson [mailto:carlsonj@workingcode.com]
Sent: Tuesday, August 22, 2017 5:43 PM
To: Ankaiah Nallamekala (MFG & Tech) <ankaiah.nallamekala@wipro.com>; Tom Samplonius <tom@samplonius.org>; Anki Abhi <anki.nakm@gmail.com>
Cc: quagga-users@lists.quagga.net; quagga-dev@lists.quagga.net
Subject: Re: [quagga-dev 16649] Re: [quagga-users 14754] PBR(policy based routing in quagga)

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On 08/22/17 06:24, ankaiah.nallamekala@wipro.com wrote:
> Policy can be anything right, we can set any matching criteria and its
> not mandatory to set 5-tupple value, Please correct me if my
> understanding is wrong.

If you're doing routing on something other than destination address, then that's an OS kernel-level feature. You should look into iptables, IP-Filter, ipchains, or whatever your local OS supports for rule-based packet filtering/rewriting.

That sort of thing isn't really related to a routing protocol suite such as Quagga.

--
James Carlson 42.703N 71.076W <carlsonj@workingcode.com>

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On 08/22/17 08:29, ankaiah.nallamekala@wipro.com wrote:
> Thanks James.
>
> Could you please let me know Quagga version which supports route redistribution(PBR) in BGP.

All versions do; redistribution is a core feature. But I suspect that
you have other requirements and you should post details to the list of
exactly what you're trying to do (with detailed examples) and what you
expect the system to do for you. It would probably also help if you
could post more about the OS you're using, because Quagga doesn't live
on an island.

It doesn't redirect traffic based on ToS/QoS, nor based on source
address, nor on IP header options, nor packet length, nor based on
transport (layer-4) protocol, nor on other layer-4 features (such as
port numbers), nor on any higher level protocol feature (e.g., URL). It
really can't do that unless the underlying kernel interfaces were to
support it. It doesn't, in fact, handle *any* data packets -- it just
computes data ("routes") to send to the kernel. It's a control plane
tool, not data plane.

Routing in a datagram network is done based on destination address.
(And, possibly, interface and VRF tags.)

If those other things are the sorts of things you're trying to do, then
it sounds like you're looking for OS features for packet redirection and
rewriting, as previously described. I.e., something in the data plane.

These things certainly interact with each other in network design, but
they're logically distinct. (Even with Cisco, you can't redistribute
"policies" via BGP, as far as I know.)

--
James Carlson 42.703N 71.076W <carlsonj@workingcode.com>
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