05-30-2006 11:59 PM - edited 03-03-2019 03:26 AM
I' ve tried with success to set a reserved bandwidth for 2 different lan passing throught the 7200 serial.
Any know how to set a dynamic Car to use all the available bandwidth in every moment?
Cause I' v seen this kind division is static!
Here what i ve configured on this serial!
rate-limit input access-group 102 1096000 256000 350000 conform-action transmit exceed-action drop
rate-limit input access-group 103 896000 128000 256000 conform-action transmit exceed-action drop
rate-limit output access-group 2 1096000 256000 350000 conform-action transmit exceed-action drop
rate-limit output access-group 3 896000 128000 256000 conform-action transmit exceed-action drop
05-31-2006 05:24 AM
policing traffic in it nature is fixed. One way you could do this was to mark your traffic inbound with the policer rather than dropping it. In the simplist case you would have traffic marked transmit and traffic marked drop eligible. Kinda like frame relay.
You could then use something like the the CBWFQ outbound passing the tranmit traffic though a form of priority queing like the BANDWIDTH statement and let the rest go to the default qeuue which will get anything left over.
05-31-2006 05:43 AM
I misread your post.
To use the solution I proposed you will need to do your marking on the interfaces that the traffic enters the router. Policing inbound on a serial link that is expext to get to 100% will not be very effective. The far end router will have already dropped packets based on its configuration which may not be the correct packets.
05-31-2006 07:57 AM
Hello,
The problem description sounds like policing is not required, but queueing. As far as I understand you want to give minimum bandwidth guarantees to each LAN and allow for utilizing up to the max bandwidth available.
CBWFQ will do exactly that. An example config:
ip cef
class-map match-all LAN1
match interface FastEthernet0/1
class-map match-all LAN2
match interface FastEthernet0/2
class-map match-all class-default
match any
policy-map 4SerialOUT
class LAN1
bandwidth percent 30
class LAN2
bandwidth percent 30
class class-default
fair-queue
interface Serial1/0
bandwidth 1024
service-policy output 4SerialOUT
This would guarantee 30% of the bandwidth at the Serial to all traffic from LAN1 and 30% to LAN2. In case there is no other traffic each LAN could use the full Serial bandwidth. You would need to adjust numbers and interfaces to your needs.
Hope this helps! Please rate all posts.
Regards, Martin
06-01-2006 03:06 AM
I know CBWFQ will reduce the available bandwidth to 75%, 25% used for controlling traffic, is it correct?
06-01-2006 03:35 AM
True but you can change it using max-reserved-bandwidth 100 on the serial interface. Then it will reserve the entire link bandwidth. MQC is the way to go for you.
06-01-2006 04:34 AM
Hello,
CBWFQ will reserve 25% of the available bandwidth for control traffic and the default class, IF (!) there is such traffic. This means even with default settings f.e. your LAN1 can get 100% of your serial. The idea is however: don´t drop your Layer2 keepalives, routing updates etc. because of customer traffic! So better reserve something or your network breaks. If no routing updates are present all the bandwidth can be utilized by customer traffic.
Hope this helps! Please rate all posts.
Regards, Martin
06-12-2006 01:05 AM
I' ve applyed this configuration:
class-map match-all Lan1
match input-interface ethernet 0/0
exit
class-map match-all Lan2
match input-interface fastethernet 2/1
exit
policy-map serialOUT
class Lan1
bandwidth percent 55
queue-limit 20
class Lan2
bandwidth percent 35
queue-limit 20
class class-default
fair queue
int serial 1/0
service-policy output serialOUT
max-reserved-bandwidth 90
I' ve tried to apply a new policy in input but it dont run
How i can do this?
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