[f-nsp] Where have all the MLX/XMR users gone to?

[Jon Lewis]

To other platforms?

We still have a few of these running, and we appear to be about to hit the 
wall.

What's going on here?

System Parameters      Default    Maximum    Current    Actual     Bootup     Revertible
ip-cache                 204800     1048576    1048576    1048576    1048576    Yes
ip-route                 204800     1048576    1048576    1048576    1048576    Yes
ipv6-cache               65536      245760     245760     245760     245760     Yes
ipv6-route               65536      245760     245760     245760     245760     Yes

Router has been rebooted since those system-max limits were changed.

#show cam-partition slot 1

CAM partitioning profile: ipv4-ipv6-2

Slot 1 XPP20SP 0:
# of CAM device                = 4
Total CAM Size                 = 917504 entries (63Mbits)

IP: Raw Size 786432, User Size 786432(0 reserved)
   Subpartition  0: Raw Size 2420, User Size 2420, (0 reserved)
   Subpartition  1: Raw Size 692807, User Size 692807, (0 reserved)
   Subpartition  2: Raw Size 73329, User Size 73329, (0 reserved)
   Subpartition  3: Raw Size 13567, User Size 13567, (0 reserved)
   Subpartition  4: Raw Size 3075, User Size 3075, (0 reserved)

IPv6: Raw Size 131072, User Size 65536(0 reserved)
   Subpartition  0: Raw Size 188, User Size 94, (0 reserved)
   Subpartition  1: Raw Size 121688, User Size 60844, (0 reserved)
   Subpartition  2: Raw Size 7940, User Size 3970, (0 reserved)
   Subpartition  3: Raw Size 1058, User Size 529, (0 reserved)
   Subpartition  4: Raw Size 160, User Size 80, (0 reserved)

If I'm interpreting that output correctly, the router has a total of 
917504 CAM entries for routes, it's split between v4/v6, and in spite of 
the system-max settings, this router will be out of FIB space at 786432 v4 
routes / 65536 v6 routes...or any moment now for v6.  This router is 
logging CAM partition warnings about free slots being low.

We're seeing the same on MLXe and NetIron chassis in XMR mode 
running 5.6.0j.


----------------------------------------------------------------------
  Jon Lewis, MCP :)           |  I route
                              |  therefore you are
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