On 2011/01/19 5:28 PM, "nanog-request@nanog.org" <nanog-request@nanog.org> wrote:
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Today's Topics:
1. Re: NAT-PT or NAT64 in real life (jarod smith) 2. Re: Software DNS hghi availability and load balancer solution (Joe Greco) 3. Re: Software DNS hghi availability and load balancer solution (Joe Abley) 4. Re: Software DNS hghi availability and load balancer solution (InterNetX - J?rgen Gotteswinter) 5. Re: Network Simulators (Ryan Shea) 6. RE: Network Simulators (Gary Gladney) 7. RE: Dual Homed BGP for failover (Randy McAnally) 8. Re: Network Simulators (Carlos Martinez-Cagnazzo) 9. RE: Dual Homed BGP for failover (Ahmed Yousuf)
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Message: 1 Date: Wed, 19 Jan 2011 13:02:33 +0100 From: jarod smith <jarod.smouth@gmail.com> Subject: Re: NAT-PT or NAT64 in real life To: nanog@nanog.org Message-ID: <AANLkTing2SOssk-yNLOVKSPS4nTRjEwcq+itVWkhrJZC@mail.gmail.com> Content-Type: text/plain; charset=ISO-8859-1
Thanks for your reply.
In summary it's not possible to deployed IPv6 only if I want to access the whole internet :)
On Wed, Jan 19, 2011 at 10:18 AM, jarod smith <jarod.smouth@gmail.com>wrote:
Although it would seem that double-stack is still the preferred method of linux distribution, I want my next deployed in IPv6 only. For linux there is NAT-PT tomicki and NAT64 Viagenie.
I don't have Cisco equipment although I'd like tested their NAT-PT, even if it's obsolete.
Are some of you have installed one of these two implementations in production on recent versions of linux? Is it stable, secure, ... ?
Regards
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Message: 2 Date: Wed, 19 Jan 2011 07:17:07 -0600 (CST) From: Joe Greco <jgreco@ns.sol.net> Subject: Re: Software DNS hghi availability and load balancer solution To: paul@paulgraydon.co.uk (Paul Graydon) Cc: nanog@nanog.org Message-ID: <201101191317.p0JDH74H076996@aurora.sol.net> Content-Type: text/plain; charset=us-ascii
Does any one know software sollutions (free is preferable) like as cisco GSS and F5 BIG-IP? The main point is that DNS-server (or dns server
be able to monitor server availability (for example by TCP connect) and from DNS-reply depends on it.
I know that it is possible by BIND with set of script. But we are
On 01/18/2011 07:42 AM, Sergey Voropaev wrote: plugin) must trying to
find more usable solution with frendly interface.
Thanks a lot.
If you want to get fancy you could try an Anycast DNS setup, using GNU's Zebra tool to automatically alter routing tables.
http://www.netlinxinc.com/netlinx-blog/45-dns/118-introduction-to-anycast -dns.html
You wouldn't use Zebra; it isn't actively developed anymore and has not been updated in many years. Use Quagga instead, which is the community-based offshoot.
... JG -- Joe Greco - sol.net Network Services - Milwaukee, WI - http://www.sol.net "We call it the 'one bite at the apple' rule. Give me one chance [and] then I won't contact you again." - Direct Marketing Ass'n position on e-mail spam(CNN) With 24 million small businesses in the US alone, that's way too many apples.
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Message: 3 Date: Wed, 19 Jan 2011 08:23:09 -0500 From: Joe Abley <jabley@hopcount.ca> Subject: Re: Software DNS hghi availability and load balancer solution To: Joe Greco <jgreco@ns.sol.net> Cc: nanog@nanog.org Message-ID: <B3ABA767-D8DC-4806-A127-AD0BD5138960@hopcount.ca> Content-Type: text/plain; charset=us-ascii
On 2011-01-19, at 08:17, Joe Greco wrote:
You wouldn't use Zebra; it isn't actively developed anymore and has not been updated in many years. Use Quagga instead, which is the community-based offshoot.
I don't think this is what the original post was asking about, but for the sake of completeness other alternatives to Zebra/Quagga (when using BGP between anycast origin servers and adjacent routers, e.g. with multipath configured on the routers) are OpenBGPd and BIRD.
See earlier suggestions for bedtime reading, also: <http://www.merit.edu/mail.archives/nanog/msg06970.html>.
Joe
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Message: 4 Date: Wed, 19 Jan 2011 14:27:52 +0100 From: InterNetX - J?rgen Gotteswinter <juergen.gotteswinter@internetx.de> Subject: Re: Software DNS hghi availability and load balancer solution To: nanog@nanog.org Message-ID: <4D36E6D8.9000408@internetx.de> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Am 19.01.11 01:01, schrieb david raistrick:
On 01/18/2011 09:42 AM, Sergey Voropaev wrote:
Does any one know software sollutions (free is preferable) like as cisco GSS and F5 BIG-IP? The main point is that DNS-server (or dns server plugin) must be able to monitor server availability (for example by TCP connect) and from DNS-reply depends on it.
On Tue, 18 Jan 2011, Charles N Wyble wrote:
Ha-proxy and linux virtual server are popular packages.
Neither of these do DNS. He asked about DNS based loadbalancing (also known as GSLB, among other things) software packages....
haproxy doesnt,
lvs works for dns very well, take a look at keepalived (www.keepalived.org). it supports lvs + vrrp.
-- david raistrick http://www.netmeister.org/news/learn2quote.html drais@icantclick.org http://www.expita.com/nomime.html
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Message: 5 Date: Wed, 19 Jan 2011 08:36:31 -0500 From: Ryan Shea <ryanshea@google.com> Subject: Re: Network Simulators To: Brandon Kim <brandon.kim@brandontek.com> Cc: nanog group <nanog@nanog.org> Message-ID: <AANLkTinzXRVwa-sGirFLieDS6GJ7cH=YzbgOWKbXqbuJ@mail.gmail.com> Content-Type: text/plain; charset=ISO-8859-1
You can do some switching by stuffing a virtual NM-16ESW into your faketastic 3660 in Dynamips. Then there are the built-in frame-relay and ethernet switches you could dump into the mix as well.
-Ryan
On Mon, Jan 17, 2011 at 10:23 AM, Brandon Kim <brandon.kim@brandontek.com>wrote:
James:
I've been resisting GNS3 for the longest time, because I like real equipment and to get my hands a little dirty. But for the purpose of simulation, GNS3 helped me identify a BGP issue last week. If it weren't for GNS3, I would not have been able to figure it out.
I will be using GNS3 in the future now for as much I can. Remember it is more router oriented than switch.
So you can't do any fancy L3 switching......
Date: Mon, 17 Jan 2011 10:05:21 -0500 From: james@freedomnet.co.nz To: nanog@nanog.org Subject: Re: Network Simulators
So far GNS3 has won out so far. It seems to work on my Mac fairly well. trying it out now.
On 17/01/11 9:37 AM, Carlos Martinez-Cagnazzo wrote:
I am currently researching virtual simulation environments for the Networking courses that I teach. I am now interested in user-mode linux emulators as they provide more real environments.
The one that I am liking the most right now is this one: http://wiki.netkit.org/index.php/Main_Page
regards
Carlos
On Mon, Jan 17, 2011 at 12:20 PM, Arturo Servin< arturo.servin@gmail.com> wrote:
GNS3 http://www.gns3.net/
This is another network simulator, mainly for academic research.
NS-2 http://www.isi.edu/nsnam/ns/
And you can always setup some virtual machines with DNSs, hosts and routers with open-source software.
regards, -as
On 17 Jan 2011, at 11:58, James Jones wrote:
Are there any good Network Simulators/Trainers out there that support IPv6? I want play around with some IPv6 setup.
-- James Jones +1-413-667-9199 <tel:+14136679199> james@freedomnet.co.nz
------------------------------
Message: 6 Date: Wed, 19 Jan 2011 13:52:20 +0000 From: Gary Gladney <gladney@stsci.edu> Subject: RE: Network Simulators To: Brandon Kim <brandon.kim@brandontek.com> Cc: nanog group <nanog@nanog.org> Message-ID: <1B0C5329DB4558419BE8B3440A66ADF306E2B432@EXCHMAIL1.stsci.edu> Content-Type: text/plain; charset="us-ascii"
If you looking for network simulator for Cisco equipment it's been my experience that Boson (www.boson.com) has best network simulator for Cisco equipment. It behaves and process information the way real Cisco equipment does. I've tried GS3, it great for routing situations but lacks in simulating switches.
Gary
-----Original Message----- From: Ryan Shea [mailto:ryanshea@google.com] Sent: Wednesday, January 19, 2011 8:37 AM To: Brandon Kim Cc: nanog group Subject: Re: Network Simulators
You can do some switching by stuffing a virtual NM-16ESW into your faketastic 3660 in Dynamips. Then there are the built-in frame-relay and ethernet switches you could dump into the mix as well.
-Ryan
On Mon, Jan 17, 2011 at 10:23 AM, Brandon Kim <brandon.kim@brandontek.com>wrote:
James:
I've been resisting GNS3 for the longest time, because I like real equipment and to get my hands a little dirty. But for the purpose of simulation, GNS3 helped me identify a BGP issue last week. If it weren't for GNS3, I would not have been able to figure it out.
I will be using GNS3 in the future now for as much I can. Remember it is more router oriented than switch.
So you can't do any fancy L3 switching......
Date: Mon, 17 Jan 2011 10:05:21 -0500 From: james@freedomnet.co.nz To: nanog@nanog.org Subject: Re: Network Simulators
So far GNS3 has won out so far. It seems to work on my Mac fairly well. trying it out now.
On 17/01/11 9:37 AM, Carlos Martinez-Cagnazzo wrote:
I am currently researching virtual simulation environments for the Networking courses that I teach. I am now interested in user-mode linux emulators as they provide more real environments.
The one that I am liking the most right now is this one: http://wiki.netkit.org/index.php/Main_Page
regards
Carlos
On Mon, Jan 17, 2011 at 12:20 PM, Arturo Servin< arturo.servin@gmail.com> wrote:
GNS3 http://www.gns3.net/
This is another network simulator, mainly for academic research.
NS-2 http://www.isi.edu/nsnam/ns/
And you can always setup some virtual machines with DNSs, hosts and routers with open-source software.
regards, -as
On 17 Jan 2011, at 11:58, James Jones wrote:
Are there any good Network Simulators/Trainers out there that support IPv6? I want play around with some IPv6 setup.
-- James Jones +1-413-667-9199 <tel:+14136679199> james@freedomnet.co.nz
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Message: 7 Date: Wed, 19 Jan 2011 09:00:28 -0500 From: "Randy McAnally" <rsm@fast-serv.com> Subject: RE: Dual Homed BGP for failover To: "Ahmed Yousuf" <ayousuf0079@gmail.com>,"'nanog group'" <nanog@nanog.org> Message-ID: <20110119140022.M30623@fast-serv.com> Content-Type: text/plain; charset=iso-8859-1
On Wed, 19 Jan 2011 10:23:47 -0000, Ahmed Yousuf wrote
- Accept that we are never going to get an ideal distribution of traffic and continue monitoring and adjusting local pref/prepends etc. as and when we need to change the distribution of traffic. Hopefully we don't need to do this that often.
^ This. You're fighting a loosing battle with such slow links. Given the limited route capacity of your router you might as well set up statics aimed at each link and forget about BGP shaping. Just keep a floating default pointed at each peer.
-Randy
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Message: 8 Date: Wed, 19 Jan 2011 12:27:27 -0200 From: Carlos Martinez-Cagnazzo <carlosm3011@gmail.com> Subject: Re: Network Simulators To: nanog@nanog.org Message-ID: <AANLkTikkwtptwNxxC0CTHuJ+nHzs9SeFMZXeo13+KCBG@mail.gmail.com> Content-Type: text/plain; charset=ISO-8859-1
Anything for Junipers ?
On Wed, Jan 19, 2011 at 11:52 AM, Gary Gladney <gladney@stsci.edu> wrote:
If you looking for network simulator for Cisco equipment it's been my experience that Boson (www.boson.com) has best network simulator for Cisco equipment. ?It behaves and process information the way real Cisco equipment does. ?I've tried GS3, it great for routing situations but lacks in simulating switches.
Gary
-----Original Message----- From: Ryan Shea [mailto:ryanshea@google.com] Sent: Wednesday, January 19, 2011 8:37 AM To: Brandon Kim Cc: nanog group Subject: Re: Network Simulators
You can do some switching by stuffing a virtual NM-16ESW into your faketastic 3660 in Dynamips. Then there are the built-in frame-relay and ethernet switches you could dump into the mix as well.
-Ryan
On Mon, Jan 17, 2011 at 10:23 AM, Brandon Kim <brandon.kim@brandontek.com>wrote:
James:
I've been resisting GNS3 for the longest time, because I like real equipment and to get my hands a little dirty. But for the purpose of simulation, GNS3 helped me identify a BGP issue last week. If it weren't for GNS3, I would not have been able to figure it out.
I will be using GNS3 in the future now for as much I can. Remember it is more router oriented than switch.
So you can't do any fancy L3 switching......
Date: Mon, 17 Jan 2011 10:05:21 -0500 From: james@freedomnet.co.nz To: nanog@nanog.org Subject: Re: Network Simulators
So far GNS3 has won out so far. It seems to work on my Mac fairly well. trying it out now.
On 17/01/11 9:37 AM, Carlos Martinez-Cagnazzo wrote:
I am currently researching virtual simulation environments for the Networking courses that I teach. I am now interested in user-mode linux emulators as they provide more real environments.
The one that I am liking the most right now is this one: http://wiki.netkit.org/index.php/Main_Page
regards
Carlos
On Mon, Jan 17, 2011 at 12:20 PM, Arturo Servin< arturo.servin@gmail.com> ?wrote:
GNS3 http://www.gns3.net/
? ? ? ? This is another network simulator, mainly for academic research.
NS-2 http://www.isi.edu/nsnam/ns/
? ? ? ? And you can always setup some virtual machines with DNSs, hosts and routers with open-source software.
regards, -as
On 17 Jan 2011, at 11:58, James Jones wrote:
> Are there any good Network Simulators/Trainers out there that > support IPv6? I want play around with some IPv6 setup. > > -- > James Jones > +1-413-667-9199 <tel:+14136679199> > james@freedomnet.co.nz >
-- -- ========================= Carlos M. Martinez-Cagnazzo http://www.labs.lacnic.net =========================
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Message: 9 Date: Wed, 19 Jan 2011 14:26:32 -0000 From: "Ahmed Yousuf" <ayousuf0079@gmail.com> Subject: RE: Dual Homed BGP for failover To: "'nanog group'" <nanog@nanog.org> Message-ID: <008901cbb7e4$f1feb860$d5fc2920$@gmail.com> Content-Type: text/plain; charset="us-ascii"
We're doing BGP to announce our PI space and make sure that our PI space is reachable through both ISPs in case one link goes down. This is the primary need to do the BGP here. Unfortunately my boss has requested that we make use of the capacity of both links, rather than pref traffic out of the higher capacity link.
-----Original Message----- From: Randy McAnally [mailto:rsm@fast-serv.com] Sent: 19 January 2011 14:00 To: Ahmed Yousuf; 'nanog group' Subject: RE: Dual Homed BGP for failover
On Wed, 19 Jan 2011 10:23:47 -0000, Ahmed Yousuf wrote
- Accept that we are never going to get an ideal distribution of traffic and continue monitoring and adjusting local pref/prepends etc. as and when we need to change the distribution of traffic. Hopefully we don't need to do this that often.
^ This. You're fighting a loosing battle with such slow links. Given the limited route capacity of your router you might as well set up statics aimed at each link and forget about BGP shaping. Just keep a floating default pointed at each peer.
-Randy
------------------------------
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