[j-nsp] PROBLEMS WITH TRAFFIC FORWARDING EX 4200 IN VIRTUAL CHASSIS

[Mike Gonnason]

You can try restarting the PFE process.

I had to restart/kill the PFE process when I was configuring Filter Based
Forwarding to send traffic to a new instance. The PFE wouldn't install
routes into the new instance, even with a config force. This was 2 EX4200
in a VC under JUNOS 11.4R2.14.

It can help reduce downtime if you can have HA features enabled.


root at switch> start shell

root at switch:RE:0% ps -aux | grep pfe

root  1284  1.0  2.3 86804 23388  ??  S     6:57AM   0:53.90 /usr/sbin/pfem
–N                          <======== 1284 is the process id
root    16  0.0  0.0     0    16  ??  WL    6:55AM   0:00.00
[mpfe_drv_taskq16:
root    44  0.0  0.0     0    16  ??  IL    6:55AM   0:00.00 [if_pfe_listen]
root  1305  0.0  1.1 25656 10892  ??  S     6:57AM   0:00.95 /usr/sbin/pfed
-N
root  1825  0.0  0.1  2388  1052  p0  S+    7:16AM   0:00.01 grep pfe

root at switch:RE:0% kill -9 1284

                <======== restart the process


Note:- Restarting the pfe would lead to an outage of maximum 30 – 40
seconds. If GRES, NSB and NSR are enabled the outage will be reduced to
less than 10 seconds.

root at switch# set routing-options nonstop-routing
      <--------Enable Nonstop active routing
root at switch# set ethernet-switching-options nonstop-bridging
<--------Enable Nonstop active bridging
root at switch# set chassis redundancy graceful-switchover
<--------Enable GRES

-Mike Gonnason


On Fri, Apr 17, 2015 at 9:20 AM, Mario Andres Rueda Jaimes <
maeve2009 at gmail.com> wrote:

> Hi All
>
>
> We are having a bizarre issue with a Virtual chassis with 2 ex 4200.
> running 10.3R3.7
>
> Suddenly some of the ports of member 0 stopped forwarding traffic with
> apparently no reason, no logs, no physical issues, even more mac learning
> process was functioning normally in the affected ports
>
> It looks like a PFE problem but unfortunenlly we can´t open a TT with JTAC.
>
> Does anybody experienced this kind of issues before ?, we appreciate any
> input
>
>
> Thanks
>
> MR
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