For the moment, anything with more than 1 full bgp feed really should
be a x86 product, in v7 that may change, but the limited CPU for BGP
in the CCRs is a major factor in our designs for our customers.
Dennis Burgess, CTO, Link Technologies, Inc.
den...@linktechs.net <mailto:den...@linktechs.net> � 314-735-0270 �
www.linktechs.net <http://www.linktechs.net>
*From:*Af [mailto:af-bounces+dmburgess=linktechs....@afmug.com] *On
Behalf Of *James Howard via Af
*Sent:* Thursday, September 25, 2014 11:54 AM
*To:* af@afmug.com
*Subject:* Re: [AFMUG] CCR-1036 fun with PPPoE
I�m a bit confused. What symptoms did you see with your routers?
What I got from Chris� description was that the CCR caused his Edge
router to bomb. Replacing the CCR didn�t fix the problem until they
rebooted the Edge router. Did your routers cause other routers to
degrade or crash?
I�m not sure about there being an issue with 6.19 on the CCR but I
can tell you that we saw a similar situation with a CCR that had 6.17
(or possibly older, not sure when we updated it) recently. I would
suspect that he�s having an issue with BGP on the CCR. In our case,
the CCR had 2 full BGP tables, PPPOE and OSPF on it. It took down
one of the BGP peers on the Edge router (PowerRouter V3 in our
case). I disabled the BGP peer on the Edge for about 5 minutes and
everything worked happily. When I started it back up, everything was
fine until it randomly happened again. We then shut down the BGP
link between the PowerRouter and the CCR. The CCR does not seem to
be able to handle more than one BGP table if it�s doing anything
else. Another CCR seems to be happy as an edge router with 2 full
tables on it. It�s not doing any other function though and we are in
process of ordering an x86 replacement.
*From:*Af [mailto:af-bounces+james=litewire....@afmug.com] *On Behalf
Of *Rory Conaway via Af
*Sent:* Thursday, September 25, 2014 11:38 AM
*To:* af@afmug.com <mailto:af@afmug.com>
*Subject:* Re: [AFMUG] CCR-1036 fun with PPPoE
No, our needs are much simpler but we saw similar issues on 5 routers
from 750�s to 1100�s. Went back to 6.15 and haven�t had a problem in
3 weeks.
Rory
*From:*Af [mailto:af-bounces+rory=triadwireless....@afmug.com] *On
Behalf Of *Chris Wright via Af
*Sent:* Thursday, September 25, 2014 9:24 AM
*To:* af@afmug.com <mailto:af@afmug.com>
*Subject:* Re: [AFMUG] CCR-1036 fun with PPPoE
Rory, thanks for your reply. Is your setup fairly similar to ours?
PPPoE, Accounting, and BGP all done by the Mikrotik? How many
sessions do you have and what kind of throughput?
Chris Wright
Velociter Wireless <http://www.velociter.net/>
*From:* Af [mailto:af-bounces+chris=velociter....@afmug.com] *On
Behalf Of *Rory Conaway via Af
*Sent:* Thursday, September 25, 2014 7:16 AM
*To:* af@afmug.com <mailto:af@afmug.com>
*Subject:* Re: [AFMUG] CCR-1036 fun with PPPoE
On the older routers, we went back to 6.15 and things have been rock
solid. We saw similar problems with 6.19.
Rory
*From:*Af [mailto:af-bounces+rory=triadwireless....@afmug.com] *On
Behalf Of *James Howard via Af
*Sent:* Thursday, September 25, 2014 6:39 AM
*To:* af@afmug.com <mailto:af@afmug.com>
*Subject:* Re: [AFMUG] CCR-1036 fun with PPPoE
Have you tried taking down the BGP session on the Edge router for a
couple minutes and then restart it?
*From:*Af [mailto:af-bounces+james=litewire....@afmug.com] *On Behalf
Of *Chris Wright via Af
*Sent:* Wednesday, September 24, 2014 5:37 PM
*To:* af@afmug.com <mailto:af@afmug.com>
*Subject:* [AFMUG] CCR-1036 fun with PPPoE
CCR-1036 running RouterOS 6.19
After some serious amounts of testing, we felt our CCR was ready to
take the plunge. The core router talks BGP to our two Imagestream
Edge routers and gets all 500k+ routes from each in about three
minutes. Its PPPoE server manages to authenticate the bulk of nearly
1800 customers in four minutes. All�s fine and dandy for about 12
hours, then not so fine and dandy things start happening. Overall
traffic that should be near 600mbps seems to top off around 400mbps.
Edge 1 goes unresponsive, VRRP doesn�t kick in on Edge 2 and the
entire network degrades. All devices on our public switch go
partially unresponsive to pings including our DNS servers, other
various VM�s, and ESXi hosts themselves.
Here�s the fun part: We took the CCR out, just flat out unplugged it
and turned on our old Core routers. They start authenticating
customers but they�re insanely slow in doing it. It�s not until we
reboot our Edge 1 router that things get back to normal and the old
Core routers authenticate at acceptable speeds. Could the CCR be
inducing a problem in our Edge routers perhaps?
Chris Wright
Velociter Wireless <http://www.velociter.net/>
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