[HECnet] GRE Peering

Tue May 21 02:12:22 PDT 2019

Hi Johnny,

That's fine by me.
In the cases where the other side has a fixed IP address, I would prefer to make the TCP connection. I can keep my firewall rules simple and in failover situations my range of IP addresses can change. Where the other side has a dynamic IP address, they'll obviously have to initiate the TCP connection but I can at least limit acceptable incoming IP addresses down to a range.

Does anybody have any experience of running DECnet circuits over Multinet's (default) UDP configurations?

Keith

-----Original Message-----
From: owner-hecnet at Update.UU.SE [mailto:owner-hecnet at Update.UU.SE] On Behalf Of Johnny Billquist
Sent: 21 May 2019 00:10
To: hecnet at Update.UU.SE
Subject: Re: [HECnet] GRE Peering

Keith - I'm starting to keep a list of people willing to peer, where they are, and what methods they can deal with.
I'm adding you based on the info below. Let me know if you want out, of if there is more I should know.

   Johnny

On 2019-05-19 17:09, Keith Halewood wrote:
> I can offer multinet connectivity to area 29. I’m in the UK
> 
> Keith
> 
>> On 19 May 2019, at 15:56, Johnny Billquist <bqt at softjar.se> wrote:
>>
>> Well, I (Update) have presence in Uppsala, including a Cisco router as well as tbe bridge and Multinet. However, I prefer not to use the bridge unless there are no other alternatives, as it's the best from a scaling point of view.
>>
>> Also, I already run a bunch of Multinet links. If I were to have 
>> more, I would need to re-SYSGEN MIM, which I'm not to keen on right 
>> now. :-)
>>
>>   Johnny
>>
>>> On 2019-05-19 16:47, Tomas Prybil wrote:
>>> Hello again
>>> Thx Supratim and Dave for tunnel endpoints.
>>> I now have managed to get a fixed address which hopefully will make it easier to connect.
>>> Are there any endpoints in Europe that would be willing to share it's connection with me at AREA34?
>>> AREA34 is originating out of Stockholm Sweden.
>>> @Dave McGuire, the new endpoint is 46.21.107.60 if you could change on your side.
>>> @Mark Berryman, I'm now static if you're interested BR /t Den 
>>> 2019-05-10 19:30 skrev "Tomas Prybil" <tomas at prybil.se> följande:
>>>      Thank you for all replies.
>>>      I've got area 33 as my own from Johnny so thats where hosts are
>>>      going til live when things are setup.
>>>           My ip is dynamic, but I've only got one change in a year. Hopefully I
>>>      will be able to change to static, but right now my isp only provides
>>>      dynamic. Changes are monitored and dynamically updates a dyndns
>>>      record.
>>>           On Fri, May 10, 2019 at 10:57:26AM -0600, Mark Berryman wrote:
>>>      > GRE tunnels can be built if one end is dynamic as long as your router supports multipoint GRE (mGRE).  Check and see if your router supports the command “tunnel mode gre multipoint” and that your tunnel supports commands that start with “ip nhrp “.  If so, then we should be able to set something up.
>>>      >
>>>      > Mark Berryman
>>>      Yes it support both commands. It looks like that functionality was
>>>      introduced in 12.2
>>>           /t
>>>                >
>>>      > > On May 10, 2019, at 10:12 AM, Supratim Sanyal <supratim at riseup.net> wrote:
>>>      > >
>>>      > > Dynamic IP and GRE is a problem. Even if you have a dynamic DNS service set up (I am using duckdns.org <http://duckdns.org/>'s service happily for a while now if you need one), I don't know if Cisco IOS does a DNS lookup every time it loses a GRE connection to the destination, or even if a destination can be a domain name instead of an IP address.  There are fabulous GRE experts in this group who might chime in.
>>>      > >
>>>      > > If the answer to all of the above is yes, and you are willing to move to area 31, I can give you a GRE tunnel end point on Area 31.
>>>      > >
>>>      > > The other alternative is a MULTINET connection to area 31 which also I can provide if you wish. MULTINET is proven to be dynamic IP friendly.
>>>      > >
>>>      > > Best,
>>>      > > Supratim
>>>      > >
>>>      > >
>>>      > >
>>>      > >
>>>      > > On May 10, 2019, at 10:43 AM, Tomas Prybil <tomas at prybil.se <mailto:tomas at prybil.se>> wrote:
>>>      > >
>>>      > >> Dear fellow HECNETers
>>>      > >>
>>>      > >> I’ve been using Johnnys bridge for a year or so, (thank you Johnny!) and wanted do some additional networking.
>>>      > >> Before going full gre peering is there anyone out there that could act as intermediate peer to do some testing while I try not to break anything (!)
>>>      > >>
>>>      > >> On my side I have good network connectivity, but unfortunately no static IP :/
>>>      > >> The box I’m using is a 2610XM with ios ver 12.4
>>>      > >>
>>>      > >> Happy if anyone is willing to share their connectivity
>>>      > >>
>>>      > >>
>>>      > >> BR
>>>      > >> /t
>>>      >
>>>      
>>
>>
>> -- 
>> Johnny Billquist                  || "I'm on a bus
>>                                   ||  on a psychedelic trip
>> email: bqt at softjar.se             ||  Reading murder books
>> pdp is alive!                     ||  tryin' to stay hip" - B. Idol

-- 
Johnny Billquist                  || "I'm on a bus
                                   ||  on a psychedelic trip
email: bqt at softjar.se             ||  Reading murder books
pdp is alive!                     ||  tryin' to stay hip" - B. Idol