I have a two remote sites each running call manager express with one site having only a 4MG ADSL connection to the internet therefore leaving only 512k for upstream traffic. There is also a vpn tunnel between the two sites.
Users are experiencing qos issues when making intersite calls jitter packet drops etc.
At the moment there is no qos deployed so i have come up with the following recommendation to prioritize the voice traffic.
class-map match-all Voice
match ip dscp ef
class-map match-any Call_Signalling
match ip dscp cs3
match ip dscp af31
priority percent 20
bandwidth percent 5
interface fastethernet 0/1
service-policy output WAN-EDGE
I would like to know if there is any other mechanism i can use and if the above recommendation will be sufficient to resolve the qos issues on this link...thanks.
This configuration will not do anything for voice. You says there's a VPN tunnel between the sites, so all the voice traffic is encapsulated in the VPN tunnel. The VPN tunnel falls into the default queue with your configuration.
You also don't say if you're providing standard Internet connectivity for users at the site through the DSL interface. This user Internet traffic would compete with the bandwidth for the IPSec tunnel. User Internet traffic would increase jitter for the IPSec packets, and therefore voice packets.
I would do the following:
- Investigate a policy on the DSL interface that guarantees bandwidth to the IPSEc tunnel
- Investigate a policy on the inside interface that will prioritize traffic going into the IPSec tunnel
[Deleted line about G.711 vs G.729 in my original post. He's using G.729]
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Phone Models 802.1X support? 802.1x flavor Addtl Comment EAP-MD5 EAP-TLS
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