Hello--
I'm deploying VOIP phones across our frame relay WAN and noticed today that when Windows updates or large files are transferred across the WAN that the VOIP signal becomes choppy. Here's the setup:
One corporate main site, one secondary corporate site, six small remote offices.
Corporate main site contains the VOIP switches, has frame T1 with PVCs to each remote site. VOIP phones and switches are on a dedicated subnet.
Secondary corporate site has point-point T1 back to main corporate site and frame T1 with PVCs to each remote site. Secondary site is vacant at the moment, but will eventually have about 30 users w/phones and PCs. QoS policy is configured on the point-point T1 back to corp main site to allow 1024K for VOIP traffic.
Six remote sites with VOIP phones. Each site has between 4-8 PCs and phones. Each site has a T1 with 2 PVCs, one back to corporate main site and one to secondary corporate site for redundancy. 256K minCIR, but typically they run around 700K +
Apparently the QoS configuration isn't working. The goal was to reserve 192K of bandwidth at each remote site for VOIP traffic, which should be enough as only one or two calls would be occurring simultaneously. Just wondering if something is wrong with the configuration, or if there is a better way to accomplish this altogether.
Thanks for any help.
Here are the relevant parts of the router configs
__________________________
_________
CORP SITE (s0/0/0 is the Frame T1 to the remote sites, 0/2/0 is the point-point to the secondary corp site)
Current configuration : 4277 bytes
!
no aaa new-model
ip subnet-zero
no ip source-route
!
ip cef
!
class-map match-all voice-traffic
match access-group 150
!
policy-map frame-policy
class voice-traffic
priority 192
class class-default
fair-queue
policy-map t1-policy
class voice-traffic
bandwidth 1024
random-detect
class class-default
fair-queue
!
interface Serial0/0/0
description
no ip address
service-policy output frame-policy
encapsulation frame-relay IETF
service-module t1 remote-alarm-enable
frame-relay lmi-type ansi
!
interface Serial0/0/0.16 point-to-point
description
ip address 172.20.254.29 255.255.255.252
frame-relay interface-dlci 16
!
interface Serial0/0/0.24 point-to-point
description
ip address 172.20.254.25 255.255.255.252
frame-relay interface-dlci 24
!
interface Serial0/0/0.25 point-to-point
description
ip address 172.20.254.37 255.255.255.252
frame-relay interface-dlci 25
!
interface Serial0/0/0.28 point-to-point
description
ip address 172.20.254.33 255.255.255.252
ip policy route-map tadhc_wifi
frame-relay interface-dlci 28
!
interface Serial0/0/0.29 point-to-point
description
ip address 172.20.254.61 255.255.255.252
frame-relay interface-dlci 29
!
interface Serial0/0/0.30 point-to-point
description
ip address 172.20.254.57 255.255.255.252
frame-relay interface-dlci 30
!
interface Serial0/0/0.31 point-to-point
description
ip address 172.20.254.45 255.255.255.252
frame-relay interface-dlci 31
!
interface Serial0/0/0.32 point-to-point
description
ip address 172.20.254.53 255.255.255.252
frame-relay interface-dlci 32
!
interface Serial0/1/0
description
bandwidth 1544
ip address 172.20.254.41 255.255.255.252
!
interface Serial0/2/0
description
bandwidth 1544
ip address 172.20.254.65 255.255.255.252
service-policy output t1-policy
service-module t1 remote-alarm-enable
!
router eigrp 100
redistribute static
network 172.20.254.24 0.0.0.3
network 172.20.254.28 0.0.0.3
network 172.20.254.32 0.0.0.3
network 172.20.254.36 0.0.0.3
network 172.20.254.40 0.0.0.3
network 172.20.254.44 0.0.0.3
network 172.20.254.52 0.0.0.3
network 172.20.254.56 0.0.0.3
network 172.20.254.60 0.0.0.3
network 172.20.254.64 0.0.0.3
no auto-summary
no eigrp log-neighbor-changes
!
ip classless
ip route 0.0.0.0 0.0.0.0 192.168.164.254
no ip http server
map-class frame-relay voipOVfr
no logging trap
access-list 101 permit ip host 10.1.7.201 any
access-list 101 deny tcp any any eq domain
access-list 101 permit ip any any
access-list 150 permit udp 10.1.4.0 0.0.0.3 any
access-list 180 permit ip 192.168.253.0 0.0.0.255 any
snmp-server community public RO
snmp-server enable traps tty
route-map tadhc_wifi permit 30
match ip address 180
set ip next-hop 192.168.164.254
_________________
SECONDARY CORP SITE. s0/1/0 is the connection to the frame cloud, 0/0/0 is the point-point back to main corp site.
Current configuration : 3037 bytes
version 12.4
ip cef
!
class-map match-all voice-traffic
match access-group 150
!
!
policy-map frame-policy
class voice-traffic
priority 192
class class-default
fair-queue
policy-map t1-policy
class voice-traffic
bandwidth 1024
class class-default
fair-queue
!
!interface FastEthernet0/0
ip address 172.20.138.254 255.255.255.0
duplex auto
speed auto
!
!
interface Serial0/0/0
ip address 172.20.254.66 255.255.255.252
service-module t1 remote-alarm-enable
service-policy output t1-policy
!
interface Serial0/1/0
no ip address
encapsulation frame-relay IETF
frame-relay lmi-type ansi
service-policy output frame-policy
!
interface Serial0/1/0.16 point-to-point
description
ip address 172.20.253.61 255.255.255.252
frame-relay interface-dlci 16
!
interface Serial0/1/0.17 point-to-point
description
ip address 172.20.253.57 255.255.255.252
frame-relay interface-dlci 17
!
interface Serial0/1/0.18 point-to-point
description
ip address 172.20.253.45 255.255.255.252
frame-relay interface-dlci 18
!
interface Serial0/1/0.19 point-to-point
description
ip address 172.20.253.53 255.255.255.252
frame-relay interface-dlci 19
!
interface Serial0/1/0.21 point-to-point
description
ip address 172.20.253.33 255.255.255.252
frame-relay interface-dlci 21
!
interface Serial0/1/0.22 point-to-point
description
ip address 172.20.253.29 255.255.255.252
frame-relay interface-dlci 22
!
interface Serial0/1/0.23 point-to-point
description
ip address 172.20.253.25 255.255.255.252
frame-relay interface-dlci 23
!
router eigrp 100
redistribute connected
network 172.20.253.24 0.0.0.3
network 172.20.253.28 0.0.0.3
network 172.20.253.32 0.0.0.3
network 172.20.253.40 0.0.0.3
network 172.20.253.44 0.0.0.3
network 172.20.253.52 0.0.0.3
network 172.20.253.56 0.0.0.3
network 172.20.253.60 0.0.0.3
network 172.20.254.64 0.0.0.3
no auto-summary
no eigrp log-neighbor-changes
!
access-list 150 permit udp any 10.1.4.0 0.0.0.3
!
__________________________
_________
REMOTE SITE. All remote sites are configured similarly.
no aaa new-model
ip subnet-zero
ip cef
!
class-map match-all voice-traffic
match access-group 150
!
!
policy-map voice-policy
class voice-traffic
priority 192
class class-default
fair-queue
!
interface FastEthernet0
ip address 172.20.136.254 255.255.255.0
ip helper-address 10.1.0.2
speed auto
!
interface Serial0
no ip address
encapsulation frame-relay IETF
frame-relay lmi-type ansi
service-policy output voice-policy
!
interface Serial0.16 point-to-point
bandwidth 256
ip address 172.20.254.54 255.255.255.252
frame-relay interface-dlci 16
!
interface Serial0.17 point-to-point
bandwidth 256
ip address 172.20.253.54 255.255.255.252
frame-relay interface-dlci 17
!
router eigrp 100
variance 2
redistribute connected
network 172.20.253.52 0.0.0.3
network 172.20.254.52 0.0.0.3
distribute-list 10 in
no auto-summary
eigrp stub connected summary
no eigrp log-neighbor-changes
!
ip classless
no ip http server
!
access-list 10 deny 172.20.0.0 0.0.255.255
access-list 10 permit any
access-list 150 permit udp any 10.1.4.0 0.0.0.3
__________________________
__________
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