collapse

Search


User Info

 
 
Welcome, Guest. Please login or register.
Did you miss your activation email?

Author Topic: Guarantee OSPF traffic  (Read 1310 times)

Offline ackld

  • Cisco Newbie
  • *
  • Posts: 5
  • Reputation: 0
    • View Profile
  • Certification: CCNA
Guarantee OSPF traffic
« on: February 21, 2014, 02:49:25 PM »
Hi there,

I am having issue with the following simple equal cost redudant links using OSPF 1 area 0.

      Fa0/0              172.16.1.0/30          Fa0/0     
        ---------------------------------------------
R1                                                                   R2
       ----------------------------------------------
      Fa0/1           172.16.1.4/30              Fa0/1

R1 has got LAN network 10.10.1.0/24
R2 has got LAN network 10.10.2.0/24

I have created basic OSPF and both work fine. and advertised both physical link and LAN.
Show ip route on each router indicated equal cost balancing.
So far so good. But now there is a task that requires OSPF updates learnt by R1 and R2 must be guaranteed. I am confused. How do I implement this?

Should it be something like:
class-map match-all CM-OSPF-UPDATE
   match protocol ospf
policy-map PM-OSPF-UPDATE
   class CM-OSPF-UPDATE
   priority 256

class-map match-any CM-ALL-OTHER-TRAFFIC
   match any

Policy-map PM-ALL-TRAFFIC
   class CM-ALL-OTHER-TRAFFIC
     --> HOW TO SET TO BEST EFFORT FOR THE OTHER TRAFFIC HERE?
   service-policy PM-OSPF-UPDATE

R1 & R2
int fa0/0 & int fa0/1
  service-policy output PM-ALL-TRAFFIC
 
I have doubt that I have done it correctly.
Does OSPF fall under the category of IP Precendence 7?
If it does how do I re-enforce that routing update has been hardcoded using IP Prec 7
or should I use priority borrowing LLQ?

Please help..

Thanks
Rick

Offline MC

  • Global Moderator
  • Cisco Guru
  • *****
  • Posts: 369
  • Reputation: 606
  • CCIE x3 (RS,Sec,SP)
    • View Profile
  • Certification: CCIE
Re: Guarantee OSPF traffic
« Reply #1 on: February 21, 2014, 10:37:15 PM »
I don't think I have seen people putting routing control traffic in priority queue. However, guaranteeing BW is common and you can usually classify it with CS6. You can do a quick Wireshark capture to confirm the DSCP marked on the OSPF

 

Related Topics

  Subject / Started by Replies Last post
5 Replies
2522 Views
Last post October 08, 2014, 06:40:31 PM
by MC
1 Replies
883 Views
Last post June 01, 2016, 09:45:58 PM
by MC

SimplePortal 2.3.5 © 2008-2012, SimplePortal