The other router looks exactly the same: ! class-map match-any af41 match ip dscp af41 class-map match-any ef match ip dscp ef ! ! policy-map 75_24 class ef priority percent 75 class af41 bandwidth percent 24 ! interface Serial0/1 ip address xxx.xxx.xxx.xxx xxx.xxx.xxxx.xxx max-reserved-bandwidth 100 service-policy output 75_24 service-module t1 timeslots 1-24 !
________________________________ From: Scott Kaufman at HQ [mailto:[email protected]] Sent: Friday, March 06, 2009 10:07 AM To: NT System Admin Issues Subject: RE: QoS for VoIP on Cisco router What have you configured on the other end for return traffic? The reason I ask is that several years ago when I was learning QoS, I had to configure it on both ends. The one time I put that knowledge to use for a VoIP solution, voice quality was good one way, but not the other, until I configured a mirrored QoS on the far end for return VoIP traffic. Scott Kaufman Lead Network Analyst ITT ESI, Inc. From: Rohyans, Aaron [mailto:[email protected]] Sent: Friday, March 06, 2009 9:54 AM To: NT System Admin Issues Subject: RE: QoS for VoIP on Cisco router Looks good to me! J What is the speed of the link? Looks like a 384Kb/s FT1. Is this a Point to Point T1, or a DIA (Dedicated Internet Access) T1? How saturated is the link during congestion (you can do a "show int ser0/0/0" during congestion and look at the "rxload" and "txload" to get an idea)? I'm assuming it's using HDLC based on the lack of extra config on the serial interface. What does the output of "show policy-map interface serial 0/0/0" give you during times of congestion? Any drops? Is it matching traffic correctly? Hope this helps, Aaron T. Rohyans Senior Network Engineer CCIE #21945, CCSP, CCNA, CQS-Firewall, CQS-IDS, CQS-VPN, ISSP, CISP, JNCIA-ER DPSciences Corporation 7400 N. Shadeland Ave., Suite 245 Indianapolis, IN 46250 Office: (317) 348-0099 Fax: (317) 849-7134 [email protected] <mailto:[email protected]> http://www.dpsciences.com/ From: David Mazzaccaro [mailto:[email protected]] Sent: Friday, March 06, 2009 9:17 AM To: NT System Admin Issues Subject: QoS for VoIP on Cisco router Could someone check my router config? I am no cisco expert (not even a CCNA)...but... I am trying to configure quality of service for voice over IP. I believe I have it set up correctly, but the users are still getting choppy phone conversations when there is other network traffic on the circuit. Here's a snip of the config: ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ boot-start-marker boot-end-marker ! logging buffered 4096 debugging enable secret 5 xxxxxxxxxxxxxxxxxxxxxxxx ! no aaa new-model ! resource policy ! memory-size iomem 25 mmi polling-interval 60 no mmi auto-configure no mmi pvc mmi snmp-timeout 180 ip subnet-zero no ip source-route ip cef ! no ip dhcp use vrf connected ip dhcp binding cleanup interval 10 ip dhcp excluded-address 192.168.6.1 ! ip domain name yourdomain.com ! class-map match-any af41 match ip dscp af41 class-map match-any ef match ip dscp ef ! policy-map 75_24 class ef priority percent 75 class af41 bandwidth percent 24 class class-default fair-queue set ip dscp default ! interface FastEthernet0/0 description $ETH-LAN$$ETH-SW-LAUNCH$$INTF-INFO-FE 0$ ip address 192.168.6.1 255.255.255.0 duplex auto speed auto no keepalive ! interface FastEthernet0/1 no ip address shutdown duplex auto speed auto ! interface Serial0/0/0 ip address xxx.xxx.xxx xxx.xxx.xxx.xxx service-module t1 timeslots 1-6 max-reserved-bandwidth 100 service-policy output 75_24 ! ip classless ip route 0.0.0.0 0.0.0.0 Serial0/0/0 ! no ip http server ip http access-class 23 ip http authentication local ip http timeout-policy idle 60 life 86400 requests 10000 ! ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Any help/guidance is greatly appreciated. Thanks, Dave ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~
