5 Apr
2021
5 Apr
'21
3:28 a.m.
Sent using SMTP.
On Apr 4, 2021, at 11:05 AM, Dave Gingrich via 44Net
<44net(a)mailman.ampr.org> wrote:
Can you ping your neighbor 169.254.169.254? BGP relies upon making connection directly
to a BGP neighbor router on port TCP 179. You may need to add a route to it. Also make
sure you have not filtered out TCP 179 or 169.254 with any firewall settings.
root@Ampr44182822router:~# ping 169.254.169.254
PING 169.254.169.254 (169.254.169.254) 56(84) bytes of data.
64 bytes from 169.254.169.254: icmp_seq=1 ttl=64 time=0.047 ms
64 bytes from 169.254.169.254: icmp_seq=2 ttl=64 time=0.101 ms
64 bytes from 169.254.169.254: icmp_seq=3 ttl=64 time=0.084 ms
64 bytes from 169.254.169.254: icmp_seq=4 ttl=64 time=0.078 ms
64 bytes from 169.254.169.254: icmp_seq=5 ttl=64 time=0.077 ms
^C
--- 169.254.169.254 ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 80ms
rtt min/avg/max/mdev = 0.047/0.077/0.101/0.019 ms
root@Ampr44182822router:~#
So yes I can ping my neighbor
I added this to /etc/network/interfaces to establish
the route on boot.
post-up ip route add 169.254.0.0/16 dev ens3 (or whatever your primary interface is
called)
Not needed see above, pings fine without it.
You also need the stanzas: protocol kernel; protocol
static; and protocol device
What do each of these stanzas do? Are they in addition for what I have or a replacement?
What part does what I have play? I’m trying to get bird to write a log but no log is
written. Here’s what I have so far:
ot@Ampr44182822router:/etc/bird# cat bird.conf
log "/var/log/bird.log" all;
router id 104.238.141.49;
protocol bgp vultr
{
local as 4288000184;
source address 104.238.141.49;
import none;
export all;
graceful restart on;
multihop 2;
neighbor 169.254.169.254 as 64515;
password "password-was-here";
}
root@Ampr44182822router:/etc/bird#
(I’ll forgo my addresses for now as first it seems bird needs to get running and not die
immediately then I need to be able to run:
root@Ampr44182822router:/etc/bird# birdc show proto all vultr
Have bird actually running, have it be able to connect to its socket, and show that the
bgp connection is established. Let’s do this in small understandable steps so others can
follow and actually grasp what they are doing.
You can disregard bird6 completely, you are only
dealing with ipv4 here.
Eventually v6 would be nice but yea, let’s get v4 working first.
What do the following stanzas do?
protocol kernel {
metric 64; # Use explicit kernel route metric to avoid collisions
# with non-BIRD routes in the kernel routing table
import none;
# export all; # Actually insert routes into the kernel routing table
}
protocol static
{
route 44.yourAllocation/23 via <your primary IP>;
}
protocol device
{
scan time 5;
}
To test it, you will have to add at least one IP from your 44 subnet, to an interface on
your VM. If you fire up another VM inside the same Vultr data center, you should be able
to ping your 44-net test IP immediately. It may take several hours for your test IP to be
accessible globally.
—
Dave K9DC
On Apr 4, 2021, at 12:19, Eric Fort via 44Net
<44net(a)mailman.ampr.org> wrote:
I’m reviewing this and trying to follow it:
https://www.vultr.com/docs/configuring-bgp-on-vultr
Here is my config files (the vultr examples) I’m running this on debian buster.
Bird.conf:
root@Ampr44182822router:/etc/bird# cat bird.conf
router id 104.238.141.49;
protocol bgp vultr
{
local as 4288000184;
source address 104.238.141.49;
import none;
export all;
graceful restart on;
multihop 2;
neighbor 169.254.169.254 as 64515;
password "password-was-here";
}
root@Ampr44182822router:/etc/bird#
Bird6.conf:
root@Ampr44182822router:/etc/bird# cat bird6.conf
router id 104.238.141.49;
protocol bgp vultr
{
local as 4288000184;
source address 2001:19f0:6001:4c5f:5400:03ff:fe38:d8ce;
import none;
export all;
graceful restart on;
multihop 2;
neighbor 2001:19f0:ffff::1 as 64515;
password "password-was-here";
}
root@Ampr44182822router:/etc/bird#
envvars:
root@Ampr44182822router:/etc/bird# cat envvars
BIRD_RUN_USER=bird
BIRD_RUN_GROUP=bird
#BIRD_ARGS=
root@Ampr44182822router:/etc/bird#
Bird commands:
root@Ampr44182822router:/etc/bird# birdc show proto all vultr
Unable to connect to server control socket (/run/bird/bird.ctl): No such file or
directory
root@Ampr44182822router:/etc/bird#
(So it appears bird is not running...... further poking seems to indicate it dies as soon
as one tries to start it)
Eric
Af6ep
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https://mailman.ampr.org/mailman/listinfo/44net On Apr 4,
2021, at 7:51 AM, Scott Nicholas via 44Net <44net(a)mailman.ampr.org> wrote:
If bird immediately dies it's the customer config. Vultr would be doing a
huge favor helping to solve that for $5/m.
I'm happy to help off-list if necessary. There apparently are two different
Vultr pages on BGP as we noticed in a previous request for help.
Check /var/log/daemon.log (on debian based) for what error is shown before
it dies.
Also see manual about config test. You can run bird with -p to get a hint
of faulty line.
Regards,
Scott wb4san
On Sun, Apr 4, 2021, 10:37 AM Dave Gingrich via 44Net <
44net(a)mailman.ampr.org> wrote:
> On Apr 4, 2021, at 00:06, Eric Fort <
eric.fort.listmail(a)fortconsulting.org> wrote:
>
> Yes I power cycled the instance from the control panel. The issue seems
to be that bird chokes on the config file and promptly dies.
> Eric.
When I established service in Chicago, it worked perfectly immediately.
When I set up the same service in Sydney, it did not. They quickly found a
misconfigured route filter was to blame. Actually it turned out it was
working, but only inside Australia and with some Australia based carriers.
Go figure.
My point is, if you followed the procedure in Vultr’s excellent
documentation (https://www.vultr.com/docs/configuring-bgp-on-vultr) and
it is not working, the problem is likely on their side. My suggestion is to
open a support ticket. They have done the same thing before for thousands
of customers. They will get you going quickly.
I am reluctant to share my configuration here, not because it is a
particular secret. But rather, I do not want parts of my configuration to
leak in to other folks installations. BGP routing is a service Vultr
offers. You are a customer of Vultr. Vultr has a very good help desk. Use
it. They have done the very same thing for others, thousands of times.
We (IRLP) are thinking about moving some of our remaining network services
to Vultr in Dallas and Seattle. We found their single CPU, “High Frequency”
VPS to be just awesome.
—
Dave K9DC
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