QoS output on WAN interface

[Steven Williams]

I have a site that is connected via MPLS. The way I access their resources (routers, swtiches) is entering through the WAN interface from the MPLS. The issue is the site is a T1. So I built an internal LAN QoS policy and applied to the LAN interface on the router. Now I am struggling with what to do on the WAN interface policy. 

I would normally apply a policy as "output" on the WAN interface, but I need to make sure my SSH,SNMP,RDP taffic can get into the site if the WAN is congested, so thats traffic inbound. So can you apply both output and input on an interface. 

I also want to carve out each class into percentages of the T1 so I did something like this:

policy-map QOS-WAN
class VOICE
priority percent 25
class VIDEO
bandwidth percent 20
class SIGNAL
bandwidth percent 10
class MGMT
bandwidth percent 10
class class-default
fair-queue

the interface is a T1 and set to "bandwidth 1536" so when this policy is applied will it understand what 25 percent of this interface is?

[Philip D'Ath]

You can only do "output"traffic shapping/QoS.  You should apply a QoS policy in the output direction of each end of the T1 pipe.

[Steven Williams]

so only output. makes sense. do you need to police or shape a T1? 

[Georg Pauwen]

Hello,

in general, shaping is the better option, as with shaping, excess packets are queued rather than dropped.

So,

shape average 1536000

should work...