You use QoS LLQ (configured with priority). The Class A has been configured with the priority command. The bandwidth is not reserved but can be used by the other classes when there is not congestion and Class A needs >65% bandwidth.
However, during congestions the traffic of CLASS A is policed to 65% and do not exceed this value in order to not saturate the link only the CLASS A traffic.
Yes the default class can exceed the 35% if the Class A is not congested and there is not need to use all the 65% of the bandwidth.
Finally, regarding the hold-queue for most other interfaces, queue length must not exceed 100.
The queue length value can be between 0 and 4096. The default value is 75
You can find detailed description to the next link
The Author of this posting offers the information contained within this posting without consideration and with the reader's understanding that there's no implied or expressed suitability or fitness for any purpose. Information provided is for informational purposes only and should not be construed as rendering professional advice of any kind. Usage of this posting's information is solely at reader's own risk.
In no event shall Author be liable for any damages whatsoever (including, without limitation, damages for loss of use, data or profit) arising out of the use or inability to use the posting's information even if Author has been advised of the possibility of such damage.
"3. does queue-limit 1000 will cause delay becuase of hold too long."
That depends on multiple factors, including what's "too long", bandwidth, and queuing being used.
Since you're using FQ in class-default, the 1000 queue-limit would be of most concern in how long individual flow queues might be. Since queue-limit is in packets, depends on packet sizes.
For example, 1,000 64 byte packets would take only about 3 ms on an OC3; and about 77 ms for 1500 byte packets. Depending on your BDP, and since worst case is under 100 ms, with FQ 1,000 may be a non-issue.
This document gives several answers on frequently asked questions for PFRv3 channel state behavior.
Q1: What are all the channel operational states from a BR (border role) perspective and what are the rules/conditions to be in each st...
The need was to reach an host inside a LAN through a VPN connection managed by the LAN gateway (Cisco 1921).
The LAN gateway performs NAT and there was a dedicate nat rule for the host i wanted to reach through VPN.
I couldn't connect to the hos...