IPv6 BGP debugging

[Peter Andreev]

Hi Alexander,

I tried "debug MLPA1 all" from birdc console, but nothing new appeared in
log file.

Currently I rolled back to 1.3.10 version from ports because 1.4.2 started
to crash with the following backtrace:


GNU gdb 6.1.1 [FreeBSD]
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This GDB was configured as "amd64-marcel-freebsd"...
Core was generated by `bird6'.
Program terminated with signal 11, Segmentation fault.
Reading symbols from /lib/libthr.so.3...done.
Loaded symbols for /lib/libthr.so.3
Reading symbols from /lib/libc.so.7...done.
Loaded symbols for /lib/libc.so.7
Reading symbols from /libexec/ld-elf.so.1...done.
Loaded symbols for /libexec/ld-elf.so.1
#0  0x0000000000464a9e in add_tail (l=0x801017798, n=0x80102a650) at
lists.c:46
46      z->next = n;
[New Thread 801007400 (LWP 100292/bird6)]
(gdb) bt
#0  0x0000000000464a9e in add_tail (l=0x801017798, n=0x80102a650) at
lists.c:46
#1  0x0000000000469ce6 in ralloc (p=0x801017780, c=0x692260) at
resource.c:224
#2  0x000000000045c20a in tm_new (p=0x801017780) at io.c:226
#3  0x0000000000425bef in bgp_setup_conn (p=0x801008020, conn=0x8010081c8)
at ../../../proto/bgp/bgp.c:631
#4  0x0000000000425d97 in bgp_active (p=0x801008020) at
../../../proto/bgp/bgp.c:660
#5  0x00000000004252cb in bgp_decision (vp=0x801008020) at
../../../proto/bgp/bgp.c:334
#6  0x000000000045bd67 in ev_run (e=0x801017800) at event.c:85
#7  0x000000000045be02 in ev_run_list (l=0x694aa0) at event.c:135
#8  0x000000000045f05f in io_loop () at io.c:1716
#9  0x00000000004669b3 in main (argc=3, argv=0x7fffffffdb20) at main.c:820
(gdb) quit


If this crash is interesting to you as port maintainer, I will provide any
additional information which can help to understand why it happened.

2014-04-09 23:10 GMT+04:00 Alexander V. Chernikov <melifaro at freebsd.org>:

> On 09.04.2014 13:36, Peter Andreev wrote:
> > Hi everybody,
>
> Hello!
> >
> > I'm trying to set up bird 1.4.2 on FreeBSD 9.1 and stuck on the
> > following:
> >
> > bird> sh pro name     proto    table    state  since       info
> > kernel1  Kernel   master   up     13:10:06 device1  Device   master
> > up     13:10:06 NICbr1   BGP      master   up     13:10:28
> > Established NICbr2   BGP      master   up     13:10:29
> > Established PTTlg    BGP      master   start  13:10:24    Connect
> > Socket: Invalid argument MLPA1    BGP      master   start  13:10:24
> > Connect       Socket: Operation timed out MLPA2    BGP      master
> > start  13:10:24    Connect       Socket: Invalid argument MLPA3
> > BGP      master   start  13:12:51    OpenConfirm   BGP Error: Hold
> > timer expired MLPA4    BGP      master   start  13:10:24    Connect
> > Socket: Invalid argument STATIC_BGP Static   master   up
> > 13:10:06
> >
> > All these BGP protocols are inherited from one template. The only
> > difference is that those are established, use another source
> > address which is configured on virtual interface.
> >
> > However my question is how to find out what's going on and how to
> > detect a problem? Setting "log syslog all;" is not very helpful -
> > it only fills the log file with a lot of "bird6: KRT: Error sending
> > route 2c0f:fb50::/0 to kernel: No such process" messages.
> You can look at detailed protocol status via
> "show protocol [nam] all"
> You can enable appropriated level of per-protocol debug (e.g. add
> "debug { events, states };" to protocol config.
>
> >
> > -- Is there any problem Exterminatus cannot solve? I have not found
> > one yet.
> >
>
>


-- 
Is there any problem Exterminatus cannot solve? I have not found one yet.
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