02-08-2011 07:45 PM - edited 03-04-2019 11:22 AM
I am trying to allocate atleast 512Kbps to HREAP traffic but for some reason I get drops on my class-map cl_HREAP while class-default has no drops. I have a T1 and the link is barely used so I don't know why its dropping traffic? Does it think its a 64k link? Please verify my config.
access-list 150 permit udp any any eq 12223
access-list 150 permit udp any any eq 5247
access-list 150 permit udp any eq 12223 any
access-list 150 permit udp any eq 5247 any
!
class-map match-all cl_HREAP
match access-group 150
!
!
policy-map pm_HREAP
class cl_HREAP
bandwidth 512
class class-default
fair-queue
!
!
interface ATM1/0
bandwidth 45000
no ip address
ip pim sparse-mode
load-interval 30
atm scrambling cell-payload
atm uni-version 3.0
no atm ilmi-keepalive
!
interface ATM1/0.6 point-to-point
bandwidth 1544
ip address 10.1.1.1 255.255.255.252
ip pim sparse-mode
ip policy route-map INTERNET_OUT
pvc 6/36
protocol ip 10.1.1.2 broadcast
vbr-nrt 1500 1500 1
encapsulation aal5snap
service-policy output pm_HREAP
!
Here are my findings, please advise.
3845#show policy-map interface atm1/0.6
ATM1/0.6: VC 6/36 -
Service-policy output: pm_HREAP
Class-map: cl_HREAP (match-all)
10480 packets, 1539855 bytes
30 second offered rate 17000 bps, drop rate 0 bps
Match: access-group 150
Queueing
Output Queue: Conversation 73
Bandwidth 512 (kbps) Max Threshold 64 (packets)
(pkts matched/bytes matched) 7455/1077130
(depth/total drops/no-buffer drops) 0/745/0
Class-map: class-default (match-any)
13291 packets, 1474327 bytes
30 second offered rate 9000 bps, drop rate 0 bps
Match: any
Queueing
Flow Based Fair Queueing
Maximum Number of Hashed Queues 64
(total queued/total drops/no-buffer drops) 0/0/0
02-09-2011 11:41 AM
If I do show queuing, I see that I'm using 630 Kilobits of available bandwidth, this may be the issue but where do I mention to use 1500 or atleast 1100 Kbps being 75% of that? Where is it getting this 630 Kbps calculation?
3845#show queueing interface atm1/0.6
Interface ATM1/0.6 VC 6/36
Queueing strategy: weighted fair
Output queue: 26/512/64/52507 (size/max total/threshold/drops)
Conversations 1/41/64 (active/max active/max total)
Reserved Conversations 1/1 (allocated/max allocated)
Available Bandwidth 630 kilobits/sec
02-09-2011 02:05 PM
If you are getting drops, it is an indication that 512 guaranteed bandwidth is not enough. You need to allowed more for that class-map.
As your other question, it defaults to 75% available bandwidth but this can be modified with the max-reserved-bandwidth command.
Please refer to the documentation:
http://www.cisco.com/en/US/tech/tk39/tk48/technologies_tech_note09186a00800fe2c1.shtml
Regards,
Edison
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