Hello,
I am hoping that someone can help me. I am pretty good with Cisco but not so great with QOS, let me explain my situation.
Our current location has 2 different l2 switches that are not doing any routing at all. Those are the 2948 and 2960. I have phones connected to the 2960, on the ports i have put
switchport access vlan 55
switchport mode access
switchport voice vlan 20
srr-queue bandwidth share 1 30 35 5
priority-queue out
mls qos trust dscp
auto qos trust
spanning-tree portfast
spanning-tree bpduguard enable
service-policy input Voice_POLICY
and on the trunk port for the 2960 i have:
description UPLINK to CORE
switchport mode trunk
srr-queue bandwidth share 1 30 35 5
priority-queue out
mls qos trust cos
auto qos trust
spanning-tree portfast disable
I just started working here and we have roughly 20 - 30 phone agents on the phones all the time and we are getting static and voice loss when talking. I looked and there does not appear to be any QOS enabled anywhere except what i have done above. I am wanting to enable QOS on the 2948 (That is how the 2960 connects back to our main router and also enable QOS on the 2821. I am at a loss when it comes to setting up QOS on the 2948 and for the 28281 i have:
class-map match-any VOIP
match ip dscp ef
match protocol rtp
match ip precedence 6
match ip precedence 5
class-map match-any VOICE
match access-group 130
class-map match-any MATCH-EF
match ip dscp ef
!
!
policy-map VOICE-MATCH
class MATCH-EF
class VOICE
set ip precedence 5
policy-map VOIP-QOS
class VOIP
priority 960
class class-default
fair-queue
random-detect
!
!
access-list 130 permit ip any 10.10x.x.xxx 0.0.0.255
interface GigabitEthernet0/0
service-policy output VOIP-QOS
interface GigabitEthernet0/1.4
service-policy output VOICE-MATCH
My questions are:
1) Is there anything else i need to do on the 2960?
2) For the 2948 how do i enable QOS so my voice packets still take priority?
3) The 2821 config i believe is correct but want to make sure i am heading the correct direction.
*Also we have 2 differnet types of phones, altigen 720's and Polycoms.
Please help
