[j-nsp] Apparent m40 RPD memory leak

[Massimiliano Galizia]

Ciao,
just a question: are your router placed in a LDP/RSVP network with Cisco 
routers? We experienced a similar problem some years ago with four M160 
connected with 30 GSR in a MPLS cloud.... In brief, Cisco router is 
intented to forward all connected networks along with the FEC (while 
JNPRs advertise only lo0 IP). We asked Cisco Staff to make their routers 
advertise only loopbacks (that's the only information an ingress router 
needs to get the egress) and we set up a policy on M160 to block other 
than /32 in LDP/RSVP info.
Nevertheless, have you got some crash or core files in your REs? In 
case, you should send them to JTAC. Moreover, do "messages" log files 
report some "SLIP"? This means that rpd deamons is getting too much CPU 
cycles and the system scheduler is going to"slip".
Hope this helps
Arrivederci
Massimiliano

Jared Gillis ha scritto:
> Hi all,
>
> I've been scratching my head over a problem with steadily increasing memory usage by rpd on our m40 routers.
> Two of our core routers have been exhibiting this problem for quite some time. Based on our graphing of memory utilization, we see the usage climb up steadily until it maxes out somewhere between 90 and 100%. Upon investigation on the router, we find that rpd is using all of this additional memory. Requesting a routing restart flushes the memory, but it starts climbing back up just like before.
>
> These two routers are deployed side by side and have been running problem-free for almost 3 years. They were running 6.2R1.5 and 6.3R1.3 respectively.
> After spending many months trying everything we could think of to resolve the problem, we decided to try upgrading to the next major rev. The router running 6.2R1.5 was upgraded to 7.5R4.4 about a month and a half ago, but we are *still* seeing the apparent memory leak.
> Here are our graphs for the last year:
>
> http://www.sonic.net/jared/gw3-mem.png
> This is the router that was upgraded to 7.5. The drops in memory utilization before that were routing restarts, and you can see how extremely rapidly the memory utilization climbed back up.
>
> http://www.sonic.net/jared/gw4-mem.png
> This is the other router, still running the same 6.3 code. It's memory utilization climbs much less quickly, but it is still a problem.
>
> Both routers are transit/edge routers, and thus handle a full table, and both are running quite a few ibgp and ebgp processes (about 20 of each). The only other protocol they're running is OSPF. They're not running anything that I would consider to be unusual, filters and routing policies for TE/BCP, etc.
>
> We have an m10i that was running 6.x code, and was upgraded to 7.5 at approximately the same time as gw3, but never exhibited this problem on either code release.
>
> Does anyone have any ideas on what on earth could be causing this?
>
>