topic Error Message Mcast task out of heap memory in Data Center (MLX & CER/CES)

Error Message Mcast task out of heap memory

FredG — Thu, 28 Oct 2021 17:25:00 GMT

I get this message repeated when trying to login to the MLX32:

Mcast task out of heap memoryOct 27 21:12:47.740 Error:send_timeout_ind: itc_send_request() to app ITC_APP_RTM6(0x22), msg_type 0x00140002 failed ret ITC_ERR_DEST_QUEUE_FULL(8)

Any clue as to the cause and how to resolve?

Thanks

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Fred Garvin
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RE: Error Message Mcast task out of heap memory

joergkost — Fri, 29 Oct 2021 12:15:00 GMT

It's complaining that it can't send a multicast address to the IPv6 Route Traffic Manager. Do you have tons of next-hops or neighborhood cache activities for IPv6 by chance?

itc show error list
itc show queue 22
show ipv6 rtm multicast
show ipv6 route summary
show ipv6 neighbor
show cam-partition usage
show version

Also debugging (if you want):
debug ipv6 rtm general
debug ipv6 rtm error
debug destination ssh $SESSION_ID -> show who
Later
no debug ipv6 rtm general
no debug ipv6 rtm error

RE: Error Message Mcast task out of heap memory

DennisM2 — Fri, 29 Oct 2021 16:46:00 GMT

We are not using IPv6 in our network and definitely not on this device.

RE: Error Message Mcast task out of heap memory

joergkost — Fri, 29 Oct 2021 16:54:00 GMT

Oh well, this does not mean that IPv6 is deactivated.
Do you use VPLS?

In doubt, maybe open an official support request and attach it.

I am also sorry, but you are working for the same company or on the same MLX like the thread starter?

RE: Error Message Mcast task out of heap memory

FredG — Wed, 03 Nov 2021 18:48:00 GMT

What is the command to disable IPv6 on the MLX32?

RE: Error Message Mcast task out of heap memory

joergkost — Thu, 04 Nov 2021 12:15:00 GMT

Depending on your Management and interface cards, you could switch the cam profile and reload the router. Please check the Management Configuration Guide for the MLX before.

config t

cam-partition profile ipv4

wr mem
reload

However, in your case, it would be nice to know what causes this storm effect:
show tech-support rtm6

RE: Error Message Mcast task out of heap memory

Wed, 03 Aug 2022 06:44:00 GMT

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