Re: BGP prefix filter list

There are a few approaches to culling the routing table. You can do it either statically or dynamically, according to your needs. 1. Filtering based on upstream communities Slimming down the Internet routing table

Re: BGP prefix filter list

Hi, I did this tool a few years ago to download and built ASN filter lists by region automatically: https://github.com/ipcjk/asnbuilder/releases The tricky part was to build regular expressions for devices, that don't understand number ranges. For some of our routers we (un)select ASNs

Re: BGP prefix filter list / BGP hijacks, different type

I wanted to mention one additional important point in all these monitoring discussion. Right now, for one of my subnets Google services stopped working. Why? Because it seems like someone from Russia did BGP hijack, BUT, exclusively for google services (most likely some kind of peering). Quite

Re: BGP prefix filter list

On Fri, May 17, 2019, at 15:28, Blake Hudson wrote: > From my perspective one's ability to intelligently route IP traffic is > directly correlated to the data they have available (their routing > protocol and table). For example, with static default routes one can For me, routing table and

Re: BGP prefix filter list

Radu-Adrian Feurdean wrote on 5/17/2019 5:10 AM: On Thu, May 16, 2019, at 16:38, Blake Hudson wrote: offloading that responsibility onto the transit provider. IMHO, what's the point of being multi-homed if you can't make intelligent routing decisions and provide routing redundancy in the case

Free Program to take netflow

I am looking for a free program to take netflow and output what the top traffic ASes to and from my AS are. Something that we can look at every once in a while, and/or spin up and get data then shutdown.. Just have two ports need netflow from currently. Thanks in advance. [LTI-Full_175px]

Re: Free Program to take netflow

Fastnetmon have that: https://fastnetmon.com/fastnetmon-advanced-traffic-persistency/ I used it for such purposes. On 2019-05-17 17:26, Dennis Burgess via NANOG wrote: I am looking for a free program to take netflow and output what the top traffic ASes to and from my AS are. Something that

Re: BGP prefix filter list

Radu-Adrian Feurdean wrote on 5/17/2019 9:15 AM: On Fri, May 17, 2019, at 15:28, Blake Hudson wrote: From my perspective one's ability to intelligently route IP traffic is directly correlated to the data they have available (their routing protocol and table). For example, with static default

Any current comments on PacketViper?

Users? Detractors? Off-list responses preferred. Will summarize if there’s an indication of interest. ..Allen allen.mckinley.kitc...@gmail.com Butler, PA

Re: BGP prefix filter list / BGP hijacks, different type

Did this get resolved? if not please email me directly. On Fri, May 17, 2019 at 9:46 AM Denys Fedoryshchenko wrote: > > I wanted to mention one additional important point in all these > monitoring discussion. > Right now, for one of my subnets Google services stopped working. > Why? Because it

Re: BGP prefix filter list

Can you check the actual FIB usage? With 2m IPv4 divided into v4 and v6 * Fast ReRoute could hit the limit. Baldur Norddahl schrieb am Mi., 15. Mai 2019, 20:24: > Hello > > On Wed, May 15, 2019 at 3:56 PM Mike Hammett wrote: > >> What is the most common platform people are using with such

Re: BGP prefix filter list

On Thu, May 16, 2019, at 16:38, Blake Hudson wrote: > offloading that responsibility onto the transit provider. IMHO, what's > the point of being multi-homed if you can't make intelligent routing > decisions and provide routing redundancy in the case of a transit > provider outage? Speaking of

Re: Free Program to take netflow

* nanog@nanog.org (Dennis Burgess via NANOG) [Fri 17 May 2019, 16:25 CEST]: I am looking for a free program to take netflow and output what the top traffic ASes to and from my AS are. Something that we can look at every once in a while, and/or spin up and get data then shutdown.. Just

Weekly Routing Table Report

This is an automated weekly mailing describing the state of the Internet Routing Table as seen from APNIC's router in Japan. The posting is sent to APOPS, NANOG, AfNOG, SANOG, PacNOG, SAFNOG TZNOG, MENOG, BJNOG, SDNOG, CMNOG, LACNOG and the RIPE Routing WG. Daily listings are sent to

Re: BGP prefix filter list

On Fri, May 17, 2019 at 3:28 PM Blake Hudson wrote: > From my perspective one's ability to intelligently route IP traffic is > directly correlated to the data they have available (their routing > protocol and table) > One point perhaps being missed by some is that routing decisions are not

Re: DHCPv6-PD relay route injection - standard?

On Tue, 14 May 2019 22:27:09 -0400 Brandon Martin wrote: > Is there a standard that defines/recommends behavior for route injection > of snooped DHCPv6-PD (or IA, I guess) assignments on routers running > relay agents? That is, snooping or otherwise examining a relayed DHCPv6 > response for

Re: BGP prefix filter list

Baldur Norddahl wrote on 5/17/2019 11:05 AM: On Fri, May 17, 2019 at 3:28 PM Blake Hudson > wrote:  From my perspective one's ability to intelligently route IP traffic is directly correlated to the data they have available (their routing protocol and

Re: BGP prefix filter list

On Fri, May 17, 2019 at 9:44 PM Blake Hudson wrote: > Baldur, I believe most routing platforms already make use of clever > shortcuts or techniques to reduce their FIB usage, but I don't think anyone > has found a good, reliable method of reducing their RIB at zero cost. For > example, what

Re: DHCPv6-PD relay route injection - standard?

On Fri, May 17, 2019 at 2:44 PM Tim Howe wrote: > Getting native dual-stack fully working > has been a long, strange road as a small ISP. I'm thinking about > writing something up about my experience so far. > I would definitely read that.

Re: BGP prefix filter list

I would argue that one can generally safely add information to his or her router's RIB (such as adding a local preference, weight, or advertising with prepends to direct traffic toward a better performing, less utilized, or lower cost peer), but that removing information

Re: DHCPv6-PD relay route injection - standard?

On 5/17/19 2:41 PM, Tim Howe wrote: I'm curious if you got any off-list replies of interest. Unfortunately no. Only inquiry I got was one related to support for it in Arista EOS which unfortunately I can't speak well toward since I don't have Arista gear. For those keeping tabs at home,

Re: Free Program to take netflow

Been loving Elastiflow. Way overkill for what you need, but it's actually pretty easy to setup. https://github.com/robcowart/elastiflow On Fri, May 17, 2019 at 7:25 AM Dennis Burgess via NANOG wrote: > > I am looking for a free program to take netflow and output what the top > traffic ASes to

Re: Free Program to take netflow

Also was a favourite last time this discussion popped up (in recent memory): https://mailman.nanog.org/pipermail/nanog/2018-March/094490.html -- Hugo Slabbert | email, xmpp/jabber: h...@slabnet.com pgp key: B178313E | also on Signal On Fri 2019-May-17 21:19:02 -0700, Crist Clark