03-18-2010 08:45 AM - edited 03-06-2019 10:12 AM
I understand locally generated traffic on a router example such OSPF, BFD are not controlled by Qos and are such packets have pak_priority flag set.
So a packet with pak_priority flag are not dropped by Qos if there is congestion. Is this hardware specific?
Francisco
Solved! Go to Solution.
03-18-2010 09:09 AM
Hello Francisco,
a system hidden queue for routing protocol messsages doe not exist in all platforms
it is present on ISR routers C3600 and C2600.
It is not present on C7500, GSR for example.
creating a traffic class for providing some resources to routing protocols may be a safe move
We did a test between a C3640 and C7500 to demonstrate this: the BGP session was falling down on C3640 side when link was congested not on C7500 side that was able to receive messages (hidden system queue on C3640)
Edit:
how is going with BFD on that link india-singapore.
Am I remembering correctly?
Hope to help
Giuseppe
03-18-2010 09:09 AM
Hello Francisco,
a system hidden queue for routing protocol messsages doe not exist in all platforms
it is present on ISR routers C3600 and C2600.
It is not present on C7500, GSR for example.
creating a traffic class for providing some resources to routing protocols may be a safe move
We did a test between a C3640 and C7500 to demonstrate this: the BGP session was falling down on C3640 side when link was congested not on C7500 side that was able to receive messages (hidden system queue on C3640)
Edit:
how is going with BFD on that link india-singapore.
Am I remembering correctly?
Hope to help
Giuseppe
03-18-2010 09:30 AM
Hi Giuseppe,
As always thanks for the clarification .
I had a feeling it only available on specific platforms.
Infact this discussion is regarding the hardware (7300) i enabled bfd on and after increasing the bfd timer, i no longer see the bfd down logs so yeah bfd seems to be working as expected. again thanks for your assiatant the other day.
Is the hidden system queue only takes care of local generated traffic and available on 7300?
Can you provide me a document regarding hidden queue for my referencing.
Regards,
Francisco.
10-09-2015 02:27 AM
mark, i found same problem.
customer config class-default bandwidth to 0, so bgp neighbor down
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