From: Bob Sinclair (bsin@cox.net)
Date: Sun May 02 2004 - 21:40:04 GMT-3
Gad,
Class-default can use FIFO or WFQ. I believe FIFO is the default.
HTH,
Bob Sinclair
CCIE #10427, CISSP, MCSE
www.netmasterclass.net
----- Original Message -----
From: "GAD" <gad@gad.net>
To: <ccielab@groupstudy.com>
Sent: Sunday, May 02, 2004 8:13 PM
Subject: CBWFQ Question
> Question. If you do not specify the "class-default" class in a policy-map,
> the class-default class appears, but it does not say "Weighted fair
> queueing". Can someone tell me what it IS doing?
>
> ex:
>
> class-map match-all Prec-5
> match ip precedence 5
>
> policy-map GAD
> class Prec-5
> bandwidth percent 90
>
> int s0
> service-policy outbound GAD
>
> R3#sho policy-map interface s0
>
> Serial0
>
> Service-policy output: GAD
>
> Class-map: Telnet (match-all)
> 0 packets, 0 bytes
> 5 minute offered rate 0 bps, drop rate 0 bps
> Match: ip precedence 5
> Weighted Fair Queueing
> Output Queue: Conversation 265
> Bandwidth 90 (%) Max Threshold 64 (packets)
> (pkts matched/bytes matched) 0/0
> (depth/total drops/no-buffer drops) 0/0/0
>
> Class-map: class-default (match-any)
> 1 packets, 13 bytes
> 5 minute offered rate 0 bps, drop rate 0 bps
> Match: any
>
> Difference when you add:
>
> class class-default
> bandwidth percent 10
>
> To the policy map is:
>
> R3#sho policy-map interface s0
>
> Serial0
>
> Service-policy output: GAD
>
> Class-map: Telnet (match-all)
> 0 packets, 0 bytes
> 5 minute offered rate 0 bps, drop rate 0 bps
> Match: ip precedence 5
> Weighted Fair Queueing
> Output Queue: Conversation 265
> Bandwidth 90 (%) Max Threshold 64 (packets)
> (pkts matched/bytes matched) 0/0
> (depth/total drops/no-buffer drops) 0/0/0
>
> Class-map: class-default (match-any)
> 38 packets, 494 bytes
> 5 minute offered rate 0 bps, drop rate 0 bps
> Match: any
> Weighted Fair Queueing
> Output Queue: Conversation 266
> Bandwidth 10 (%) Max Threshold 64 (packets)
> (pkts matched/bytes matched) 0/0
> (depth/total drops/no-buffer drops) 0/0/0
>
> Notice the addition of the last 5 lines.
>
> So my question is, in the first example, what is the queuing mechaninsm if
> not WFQ? Queueing for the interface is Weighted Fair as shown in in a show
> int:
>
> Serial0 is up, line protocol is up
> Hardware is HD64570
> Internet address is 208.28.1.2/29
> MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec,
> reliability 255/255, txload 1/255, rxload 1/255
> Encapsulation FRAME-RELAY, loopback not set
> Keepalive set (10 sec)
> LMI enq sent 43526, LMI stat recvd 43527, LMI upd recvd 0, DTE LMI up
> LMI enq recvd 0, LMI stat sent 0, LMI upd sent 0
> LMI DLCI 1023 LMI type is CISCO frame relay DTE
> FR SVC disabled, LAPF state down
> Broadcast queue 0/64, broadcasts sent/dropped 2/0, interface broadcasts
> 0
> Last input 00:00:04, output 00:00:04, output hang never
> Last clearing of "show interface" counters 5d01h
> Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
> Queueing strategy: weighted fair
> Output queue: 0/1000/64/0 (size/max total/threshold/drops)
> Conversations 0/1/256 (active/max active/max total)
> Reserved Conversations 2/2 (allocated/max allocated)
> Available Bandwidth 1158 kilobits/sec
> 5 minute input rate 0 bits/sec, 0 packets/sec
> 5 minute output rate 0 bits/sec, 0 packets/sec
> 50821 packets input, 2826502 bytes, 0 no buffer
> Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
> 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
> 43576 packets output, 570160 bytes, 0 underruns
> 0 output errors, 0 collisions, 3 interface resets
> 0 output buffer failures, 0 output buffers swapped out
> 1 carrier transitions
> DCD=up DSR=up DTR=up RTS=up CTS=up
>
> I'm sure the answer is obvious somehwere, but I'm fried and it's eluding
> me.
>
> Thanks!
>
> GAD
>
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