Hi Saku,
> On 26 Jan 2017, at 16:08, Saku Ytti <[email protected]> wrote:
>
> If you allow MCAST in CoPP and MLS rate-limit, you can drop them in HW.
With MLS rate-limit on 15.1SY sup720-3b:
# mls qos
# mls rate-limit multicast ipv6 mld 10 1
# show mls rate-limit
Rate Limiter Type Status Packets/s Burst Sharing
MCAST IPv6 MLD On 10 1 Not sharing
Router#show proc cpu sorted 5sec
CPU utilization for five seconds: 91%/33%; one minute: 66%; five minutes: 38%
PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process
413 98708 999825 98 34.95% 25.32% 13.95% 0 MLD
319 58508 984863 59 22.71% 16.74% 9.23% 0 IPv6 Input
There is no decrease in CPU usage at all on the 6500, the mls rate-limit does
not seem to work.
There appears to be a Cisco 'wontfix' bug for this:
https://quickview.cloudapps.cisco.com/quickview/bug/CSCuo37358
Cisco Bug: CSCuo37358 - IPv6 multicast rate limiters are not working in 6500
Last Modified: Sep 23, 2015
Status: Terminated
Severity: 2 Severe
Workaround: None
Further Problem Description: NIL
Known Affected Releases: 12.2(33)SXJ3.1
Known Fixed Releases: No release planned to fix this bug
It seems hard to believe this mls rate-limit mld feature never worked at all,
has anyone here ever verified it working?
If so, any information on specific circumstances it will and won't work in?
Thanks
James
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