Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. And see here for current known issues.

New Member

QOS with CEF enabled . and strict prioritization

  I have 6509 core switch . where CEF is ruunning .  I am applying  QOS for  the one of the application

where  I am calling ACL  and defining    1) perimit ip host 10.200.250.10 any

                                                          2) permit udp range 49000 49100 any    

In clas-map OCS  for the ACL i am marking ip  precedence  5 .  and applying  on the interface

for the second statement of ACL  i am finding  hits  , same time for the first statement ACL  I am not finding ACL hits .

As CEF being eanbled  is that reason i am not finding hits at ACL at first statement  and not marking the packets for precedence 5 .

Is there any way to check precedence 5 has been marked for the packetes . please suggest .

Also  would like to know, If I created 2  classes at LLQ  as per below configuration  . 

1) class  VOICE QUEUE marking at precedence  5  ,  strict priority configured   .

2)  class BUSINESS CLASS  marking precedence 1   , strict priority configured .

In this scanario , whch traffic will be priotized  FIRST at router , when traffic hits to the, Lan interface  buffer memory .please guide .

1) Class-map: VOICE-QUEUE (match-any)
      28029 packets, 6802733 bytes
      30 second offered rate 1000 bps, drop rate 0 bps
      Match: access-group 150
        28029 packets, 6802733 bytes
        30 second rate 1000 bps
      Priority: 30% (24000 kbps), burst bytes 600000, b/w exceed drops: 0
     
      QoS Set
        precedence 5
          Packets marked 28029

    2) Class-map: BUSINESS-CLASS-QUE (match-any)
      2296314 packets, 482676020 bytes
      30 second offered rate 28000 bps, drop rate 0 bps
      Match: access-group 152
        2296314 packets, 482676020 bytes
        30 second rate 28000 bps
      Priority: 40% (32000 kbps), burst bytes 800000, b/w exceed drops:

       QoS Set
        precedence 1
          Packets marked 2296669

2 REPLIES

Re: QOS with CEF enabled . and strict prioritization

Hi there,

In answer to your frst question, I usually use wireshark to capture some packet as and make sure that they have been marked correctly.

With regards to your second question, this thread may have some information that will be useful to you:

https://supportforums.cisco.com/message/819614;jsessionid=1C2B422DEE3F12AE56AF02EA167B2D76.node0

Hope this helps,

Jonathan

New Member

Re: QOS with CEF enabled . and strict prioritization

Thanks for your valuable tips .

258
Views
0
Helpful
2
Replies
CreatePlease to create content