x670V-48x multicast L3 hardware table full

  • 0
  • 2
  • Problem
  • Updated 12 months ago
  • Not a Problem

At a customer we are using 3 stacks of 3 x670v-48 switches.
These are configured native stacking.
The multicast used is PIM Sparse mode.

In the log file I keep seeing the following message:
<Erro:HAL.IPv4Mc.L3TblFull> Slot-2: IPv4 multicast entry not added. Hardware L3 Table full.

When checking the L3 hash table using the following command:
show iproute reserved-entries statistics

I see a total of 357 entries, when the Theoretical maximum is at 4096.
The firmware we use on the switches is

Does this entry in the logs indicate a problem with the ipv4 multicast configuration?
If so, what impact does this have on the streams?
Photo of Erwin van Hoof

Erwin van Hoof

  • 366 Points 250 badge 2x thumb

Posted 12 months ago

  • 0
  • 2
Photo of Ron Huygens

Ron Huygens, Employee

  • 3,360 Points 3k badge 2x thumb
Hello Erwin,

Can you take a look at the following article and see if this will help in your situation:
Photo of Bin

Bin, Employee

  • 5,374 Points 5k badge 2x thumb
Heelo Erwin,

Kindly add another article for this topic.

How to prevent "IPv4 multicast entry not added. Hardware L3 table full." log messages

Best regards,
Photo of Erwin van Hoof

Erwin van Hoof

  • 366 Points 250 badge 2x thumb

Thanks for the information.
In the first article you provide instructions to configure an IGMP snooping filter per VLAN. The example given in the article is that a certain Hardware Limitation of a table has been reached, but that is not the case in our environment.

In fact, the maximum multicast adresses is around 4000 on a x670v-48 switch. Is this still a step you recommend to follow?

To me, the information shown when using the command
show iproute reserved-entries statistics
displays expected data (around 370 multicast adresses).

Is it possible that this has something to do with the firmware we use?
Firmware version
Best regards,
Photo of Grosjean, Stephane

Grosjean, Stephane, Employee

  • 13,676 Points 10k badge 2x thumb
Can you give the output of the "show iproute reserved-entries statistics" CLI command?
Photo of M.Nees

M.Nees, Embassador

  • 9,956 Points 5k badge 2x thumb
Hi Erwin,

i recommend you to bring this switch to a recent firmware to exclude all the old bugs ...

Here the vendor recommendation matrix: