RE: Bandwidth Percent

Muzammil,

Your understanding is correct. When I paste your configs into my routers I
do get the expected warning message.

R1(config-pmap-c)#int f0/1
R1(config-if)#bandwidth 128
R1(config-if)# no ip address
R1(config-if)# duplex auto
R1(config-if)# speed auto
R1(config-if)# service-policy output CBWFQ
I/f FastEthernet0/1 class HTTP requested bandwidth 10%, available only 0%

And the policy is not applied.

  Perhaps there is something else in your config or IOS version that is
affecting this (though I do not know what it could be).

R1#sh ver
Cisco IOS Software, 2800 Software (C2800NM-ADVENTERPRISEK9-M), Version
12.4(21)

Hope that Helps,

-Bob Sinclair

> -----Original Message-----
> From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of
> Muzammil Malick
> Sent: Sunday, June 13, 2010 6:24 AM
> To: Cisco certification
> Subject: Bandwidth Percent
>
> Hi All
>
> I created the following configuration and expected IOS to warn me that
> I had
> exceeded the reservable bandwidth but it did not warn me:
>
>
> interface FastEthernet1/0
> bandwidth 128
> no ip address
> duplex auto
> speed auto
> service-policy output CBWFQ
>
> class-map match-all TELNET
> match protocol telnet
> class-map match-all HTTP
> match protocol http
> class-map match-all FTP
> match protocol ftp
> class-map match-all VOICE
> match protocol rtp audio
> !
> policy-map CBWFQ
> class VOICE
> bandwidth percent 25
> class TELNET
> bandwidth percent 25
> class FTP
> bandwidth percent 25
> class HTTP
> bandwidth percent 10
>
> 25% of the interface bandwidth gives 32Kb. Therefore after making 3
> reservations of 25% I had already achieved 96Kb.
> I have left the max-reserved-bandwidth to default of 75%. therefore I
> should
> not be able to reserve more than 96Kb.
> However I was able to reserve an additional 10% for HTTP traffic.
>
> Is it on the administrator to ensure that the bandwidth percent values
> do
> not exceed the max-res bandwidth?
> What would happen now in my situation where I have more reservations
> than
> reservable bandwidth?
>
> Service-policy output: CBWFQ
>
> Class-map: VOICE (match-all)
> 0 packets, 0 bytes
> 5 minute offered rate 0 bps, drop rate 0 bps
> Match: protocol rtp audio
> Queueing
> queue limit 64 packets
> (queue depth/total drops/no-buffer drops) 0/0/0
> (pkts output/bytes output) 0/0
> bandwidth 25% (32 kbps)
>
> Class-map: TELNET (match-all)
> 0 packets, 0 bytes
> 5 minute offered rate 0 bps, drop rate 0 bps
> Match: protocol telnet
> Queueing
> queue limit 64 packets
> (queue depth/total drops/no-buffer drops) 0/0/0
> (pkts output/bytes output) 0/0
> bandwidth 25% (32 kbps)
>
> Class-map: FTP (match-all)
> 0 packets, 0 bytes
> 5 minute offered rate 0 bps, drop rate 0 bps
> Match: protocol ftp
> Queueing
> queue limit 64 packets
> (queue depth/total drops/no-buffer drops) 0/0/0
> (pkts output/bytes output) 0/0
> bandwidth 25% (32 kbps)
>
> Class-map: HTTP (match-all)
> 0 packets, 0 bytes
> 5 minute offered rate 0 bps, drop rate 0 bps
> Match: protocol http
> Queueing
> queue limit 64 packets
> (queue depth/total drops/no-buffer drops) 0/0/0
> (pkts output/bytes output) 0/0
> bandwidth 10% (12 kbps)
>
> Thanks
>
>
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Received on Sun Jun 13 2010 - 10:56:43 ART