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heklager
New Contributor

QOS with Netvanta 3120 and Netvanta 7100

I have a branch office connected to the main office with an Netvanta 3120 access router.

We have a Netvanta 7100 at the main office.

The phone used at the branch office are Polycom VVX300.

The connexion speed specified by the provider for the branch office is a PPPOE connection at 15/10 (15mb download, 10mb upload).

I applied some kind of a QoS to the WAN interface as per Adtran documentation found on this forum.

However, the VoIP call quality degrades a lot when there's a large file download at the same time.

I started a 1gb download test file and we can't have a normal conversation from the point.

Here is my basic QoS setup :

qos map VoIP 10

  match dscp 26 46

  priority unlimited  (note : 2048 was the previous value)

!

vlan 1

  name "Default"

!

vlan 2

  name "voip"

!

interface loop 1

  ip address 10.10.11.1 255.255.255.255

  ip mtu 1500

  no shutdown

!

interface eth 0/1

  description WAN

  ip address dhcp

  ip access-policy Public

  ip crypto map VPN

  dynamic-dns dyndns blablabla.dynalias.org mcthon encrypted 1b1d6f862121d2018527972ec70d4b02290f

  qos-policy out VoIP

  no awcp

  no shutdown

  no lldp send-and-receive

!

interface switchport 0/1

  no shutdown

  switchport mode trunk

!

interface switchport 0/2

  no shutdown

  switchport mode trunk

!

interface switchport 0/3

  no shutdown

  switchport mode trunk

!

interface switchport 0/4

  no shutdown

  switchport mode trunk

!

interface vlan 1

  ip address 172.16.11.254 255.255.255.0

  ip access-policy Private

  no shutdown

!

interface vlan 2

  ip address 10.10.11.254 255.255.255.0

  ip mtu 1500

  ip access-policy Private

  no rtp quality-monitoring

  media-gateway ip primary

  no awcp

  no shutdown

!

interface ppp 1

  ip address negotiated

  ip mtu 1500

  ip access-policy Public

  ip crypto map VPN

  no fair-queue

  pppoe service-name bellnet.ca

  ppp pap sent-username blablabla@bellnet.ca password encrypted 363e94091cf3f1f71e81651decec5e91b7ef

  no shutdown

  cross-connect 1 eth 0/1 ppp 1

Would you please help me, thanks in advance !

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