CBQFW Bandwidth command

[GRANT3779]

Hello,

When configuring the bandwidth command, e.g as below

policy-map TEST
Class Data_Critical
bandwidth percent 40

This "percent 40". Is this 40% of the Interface BW that the Policy Map is applied to, or is it related to a certain queue size? What exactly does the bandwidth command relate to?

[aedamasceno]

It relates to the interface's bandwidth. 

PSTN-RTR#show interface gig 0/0
GigabitEthernet0/0 is up, line protocol is up
  Hardware is CN Gigabit Ethernet, address is 2c54.2d2b.d950 (bia 2c54.2d2b.d950)
  MTU 1500 bytes, BW 100000 Kbit/sec, DLY 100 usec,
     reliability 255/255, txload 1/255, rxload 9/255
  Encapsulation 802.1Q Virtual LAN, Vlan ID  1., loopback not set
  Keepalive set (10 sec)

So, it will be 40% of 100000.

[Joseph W. Doherty]

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Posting

Aedamasceno is correct, but also keep in mind it's relative to all your allocations.

For example if you had:

policy-map TEST
Class Data_Critical
bandwidth percent 40

class Another

bandwidth percent 20

Discounting the implicit class-default class, Data_Critical (on most platforms - I understand ASRs are different) effectively gets 2/3 of the bandwidth because only 60% has been defined.  Bandwidth ratios are 40:20 or 2:1.