Hi Stefan (and the rest of the community),
To give you an update, two days before we upgraded one of our Route servers
with Kernel version 4.9 and at the same time we upgraded Bird to version 1.6.8
Situation became worse, the customer who reported the bug, 6 hours after the
maintenance he compl
On Tue, Mar 03, 2020 at 09:09:58AM +0100, Stavros Konstantaras wrote:
> Hi Ondrej,
>
> Great feedback, thank’s a lot for sharing it with us. Currently we are using
> the kernel 3.16.39-1+deb8u2, do you remember if this kernel was inside the
> list of complains?
Hi
See the link i sent you in t
Hi Alexander,
In general we try to keep the RS as light as possible, which means we do not
run unwanted applications or packet captures over there.
Nevertheless, we didn’t observe busy HDD issues but that is also a valid point.
As per Ondrej’s feedback, it seems there is a kernel issue, maybe
Hi Ondrej,
Great feedback, thank’s a lot for sharing it with us. Currently we are using
the kernel 3.16.39-1+deb8u2, do you remember if this kernel was inside the list
of complains?
We will schedule a maintenance to update the kernel in both Route Servers and
see if that solves the issue.
T
Hi,
Can it be some IO issue? We had similar problems with bird making an
IO loop for too much time so that hold timers were expired by that
time. It was probably caused when it was writing a log file on a busy
HDD. But we catch those with syslog too, because that write is
blocking for the bird too
On Fri, Feb 28, 2020 at 03:33:06PM +0100, Stavros Konstantaras wrote:
> HI Alarig,
>
> Thank you for sharing your experiences. I don’t have the MSS currently but if
> that was the case, wouldn’t have experienced the drops more frequently?
> Currently it happens once per month (or 0.8 per month)
Hi Tapio,
Good point as well but I don’t have access to customer’s router. I can only
touch my Linux server and based on that, ARP entry is there as the BGPv4
session remains up (which means that the switches in the middle can have a
valid MAC entry in their MAC table).
Only the BGPv6 session
HI Alarig,
Thank you for sharing your experiences. I don’t have the MSS currently but if
that was the case, wouldn’t have experienced the drops more frequently?
Currently it happens once per month (or 0.8 per month) and contrary to your
case which was 100% network related, in our case we don’t
Hi Stavros,
On ven. 28 févr. 12:41:24 2020, Stavros Konstantaras wrote:
> Hi Bird community,
>
> We are investigating a weird customer issue regarding our Bird Route
> Servers (version 1.6.3) and a specific IPv6 session. Customer reports
> a sudden drop of his IPv6 session and -until now- we coul
double check that your router have arp entry and route for that peer when that
happens. Example if your router get wrong route for peer it can send response
packets (or some cases arp requests) to wrong interface. So dump your another
interfaces also at same time and you will see what it do. Pro
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