[f-nsp] CAM IPv6 partition warning even if cam partition not full

Tue Oct 2 01:28:00 EDT 2018

Can you check the output of:
  show default values | inc ipv6

-- 
Eldon

On Sun, Sep 30, 2018, 08:32 Dennis op de Weegh <info at bitency.nl> wrote:

> Hi Andreas,
>
> We have for IPv6 system-max:
>
> system-max ipv6-cache 60000
> system-max ipv6-route 60000
>
>
>
> Kind regards/Met vriendelijke groet,
>
> Dennis op de Weegh
>
>
>
> Bitency
> Hoge Ham 24
> 5104JG Dongen
>
> Kvk nummer: 20144338
> BTW nummer: NL213538519B01
>
> W: www.bitency.nl
> E: info at bitency.nl
> T: +31 (0)162 714066
>
>
> -----Oorspronkelijk bericht-----
> Van: Andreas Schlee <andreas.schlee at godaddy.com>
> Verzonden: zondag 30 september 2018 16:23
> Aan: Dennis op de Weegh <info at bitency.nl>; foundry-nsp at puck.nether.net
> Onderwerp: AW: CAM IPv6 partition warning even if cam partition not full
>
> Hello Dennis,
>
> CAM partitioning profile is ipv4-ipv6-2, all modules are BR-MLX-10Gx4-X We
> only get those messages from module 3, not from the other one.
>
> >show run | in system-max
> system-max vlan 2000
> system-max spanning-tree 1
> system-max ip-cache 1048576
> system-max ip-route 1048576
> system-max virtual-interface 1024
>
> What else do you need from the config?
>
> Best regards,
> Andreas Schlee
>
> ________________________________________
> Von: Dennis op de Weegh <info at bitency.nl>
> Gesendet: Sonntag, 30. September 2018 14:59:36
> An: Andreas Schlee; foundry-nsp at puck.nether.net
> Betreff: RE: CAM IPv6 partition warning even if cam partition not full
>
> Hi Andreas,
>
> Which cam profile do you use?
> Can you post your config?
>
> Maybe the same bug in 2016:
> https://puck.nether.net/pipermail/foundry-nsp/2016-March/009467.html
>
>
> Kind regards/Met vriendelijke groet,
>
> Dennis op de Weegh
>
>
>
> Bitency
> Hoge Ham 24
> 5104JG Dongen
>
> Kvk nummer: 20144338
> BTW nummer: NL213538519B01
>
> W: www.bitency.nl
> E: info at bitency.nl
> T: +31 (0)162 714066
>
>
> -----Oorspronkelijk bericht-----
> Van: foundry-nsp <foundry-nsp-bounces at puck.nether.net> Namens Andreas
> Schlee
> Verzonden: zondag 30 september 2018 10:19
> Aan: foundry-nsp at puck.nether.net
> Onderwerp: [f-nsp] CAM IPv6 partition warning even if cam partition not
> full
>
> Hi, on our MLXe running IronWare 6.0.0f we're getting CAM IPv6 partition
> warnings:
>
> >sh log | in CAM
> Sep 26 11:43:25:A:CAM IPv6 partition warning: total 65536 (reserved 0),
> free 51, slot 3, ppcr 1 Sep 26 11:38:25:A:CAM IPv6 partition warning: total
> 65536 (reserved 0), free 44, slot 3, ppcr 1 Sep 26 11:33:25:A:CAM IPv6
> partition warning: total 65536 (reserved 0), free 22, slot 3, ppcr 1 Sep 26
> 11:28:25:A:CAM IPv6 partition warning: total 65536 (reserved 0), free 62,
> slot 3, ppcr 1 Sep 26 11:23:25:A:CAM IPv6 partition warning: total 65536
> (reserved 0), free 100, slot 3, ppcr 1 Sep 26 11:18:25:A:CAM IPv6 partition
> warning: total 65536 (reserved 0), free 43, slot 3, ppcr 1
>
> But the cam partition usage tells us there is still space free:
>
> >show cam-partition usage  slot 3
> Slot 3 XPP20SP 0:
> [...]
>           [IPV6]  65536(size),   10218(free), 084.40%(used)
>         :SNet 0:  10470(size),   10207(free), 002.51%(used)
>         :SNet 1:  51359(size),       5(free), 099.99%(used)
>         :SNet 2:   3268(size),       0(free), 100.00%(used)
>         :SNet 3:    377(size),       0(free), 100.00%(used)
>         :SNet 4:     45(size),       0(free), 100.00%(used)
>         :SNet 5:      9(size),       0(free), 100.00%(used)
>         :SNet 6:      2(size),       1(free), 050.00%(used)
>         :SNet 7:      2(size),       2(free), 000.00%(used)
>         :SNet 8:      2(size),       2(free), 000.00%(used)
>         :SNet 9:      2(size),       1(free), 050.00%(used)
>
> >show ipv6 route sum
> IPv6 Routing Table - 55032 entries:
>   122 connected, 0 static, 0 RIP, 0 OSPF, 54910 BGP, 0 ISIS
>   Number of prefixes:
>   /16:1 /19:2 /20:11 /21:3 /22:6 /23:4 /24:21 /25:6 /26:15 /27:17
>   /28:82 /29:2292 /30:210 /31:123 /32:10733 /33:697 /34:595 /35:419
>   /36:2143 /37:403 /38:473 /39:166 /40:2878 /41:379 /42:579 /43:135
>   /44:4056 /45:343 /46:1455 /47:521 /48:25424 /50:4 /54:9 /56:39
>   /64:243 /112:1 /123:1 /124:5 /125:7 /126:489 /127:9 /128:33 Nexthop
> Table Entry - 120 entries
>
>
> So the warning tells us a highly different amount of free entries compared
> to the log: 10218 <-> 51 We checked the usage about 2 minutes after the
> warning appeared in the log.
>
> Anyone out there facing or faced the same issue? What information should
> we trust now: the warning in the log or the cam-partition usage?
> Another question would be: what are the "SNet" entries we see in the
> cam-partition, and why are some of them this small (size of 2)?
>
> Finally, the manual says about partition sharing:
> Supernet TCAM partition sharing
> In Brocade NetIron software versions prior to 03.2.00, TCAM resources
> could not be shared between the 32 levels of the IP Forwarding Information
> Base (FIB). Beginning with 03.2.00, TCAM allocation is optimized for
> dynamic allocation of resources to each level. If one level runs out of
> TCAM resources, it can obtain resources that have been allocated to another
> level but are unused. This feature applies to IPv4 and Layer 3 VPN routes.
>
> Does that mean that there is no sharing between the supernets in IPV6 CAM?
>
> Regards,
> Andreas Schlee
>
> --
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