I have a VoIP box that connects to a Cisco 2950 switch that connects to my internet router, a Cisco 2620XM with 2 WAN interfaces. I've configured the router with"ip load-sharing per-packet" on each WAN interface to split my outgoing traffic 50-50 between my 2 ISP providers. I think that's causing problems with my VoIP because during business hours (8-5 PM EST), VoIP conversations are really choppy or non-functional. After hours it works normally. I'm thinking I need to direct all my VoIP across only 1 interface instead of splitting it... what do you think? If you agree, how do I configure my router to not load-share only VoIP traffic? I've included my current sanitized router config ommitting the stuff I thought wasn't relevant ....
version 12.4
!
resource policy
!
clock timezone est -5
no network-clock-participate slot 1
no network-clock-participate wic 0
ip cef
!
class-map match-any SDMTrans-Serial0/0
match protocol citrix
match protocol finger
match protocol notes
match protocol novadigm
match protocol pcanywhere
match protocol secure-telnet
match protocol sqlnet
match protocol sqlserver
match protocol ssh
match protocol telnet
match protocol xwindows
class-map match-any SDMTrans-Serial0/1
match protocol citrix
match protocol finger
match protocol notes
match protocol novadigm
match protocol pcanywhere
match protocol secure-telnet
match protocol sqlnet
match protocol sqlserver
match protocol ssh
match protocol telnet
match protocol xwindows
class-map match-any SDMVoice-Serial0/0
match protocol rtp audio
class-map match-any SDMVoice-Serial0/1
match protocol rtp audio
class-map match-any SDMScave-Serial0/0
match protocol napster
match protocol fasttrack
match protocol gnutella
class-map match-any SDMScave-Serial0/1
match protocol napster
match protocol fasttrack
match protocol gnutella
class-map match-any SDMRout-Serial0/0
match protocol bgp
match protocol egp
match protocol eigrp
match protocol rip
match protocol rsvp
class-map match-any SDMRout-Serial0/1
match protocol bgp
match protocol egp
match protocol eigrp
match protocol rip
match protocol rsvp
class-map match-any SDMBulk-Serial0/0
match protocol exchange
match protocol ftp
match protocol irc
match protocol nntp
match protocol pop3
match protocol printer
match protocol secure-ftp
match protocol secure-irc
match protocol secure-nntp
match protocol secure-pop3
match protocol smtp
match protocol tftp
class-map match-any SDMBulk-Serial0/1
match protocol exchange
match protocol ftp
match protocol irc
match protocol nntp
match protocol pop3
match protocol printer
match protocol secure-ftp
match protocol secure-irc
match protocol secure-nntp
match protocol secure-pop3
match protocol smtp
match protocol tftp
class-map match-any SDMManage-Serial0/1
match protocol dhcp
match protocol dns
match protocol imap
match protocol kerberos
match protocol ldap
match protocol secure-imap
match protocol secure-ldap
match protocol snmp
match protocol socks
match protocol syslog
class-map match-any SDMManage-Serial0/0
match protocol dhcp
match protocol dns
match protocol imap
match protocol kerberos
match protocol ldap
match protocol secure-imap
match protocol secure-ldap
match protocol snmp
match protocol socks
match protocol syslog
class-map match-any SDMIVideo-Serial0/0
match protocol rtp video
class-map match-any SDMIVideo-Serial0/1
match protocol rtp video
class-map match-any SDMSVideo-Serial0/0
match protocol cuseeme
match protocol netshow
match protocol streamwork
match protocol vdolive
class-map match-any SDMSVideo-Serial0/1
match protocol cuseeme
match protocol netshow
match protocol streamwork
match protocol vdolive
!
!
policy-map SDM-Pol-Serial0/0
class SDMManage-Serial0/0
bandwidth remaining percent 5
set dscp cs2
class SDMRout-Serial0/0
bandwidth remaining percent 5
set dscp cs6
class SDMTrans-Serial0/0
bandwidth remaining percent 50
set dscp af21
class SDMVoice-Serial0/0
priority percent 58
set dscp ef
policy-map SDM-Pol-Serial0/1
class SDMManage-Serial0/1
bandwidth remaining percent 5
set dscp cs2
class SDMRout-Serial0/1
bandwidth remaining percent 5
set dscp cs6
class SDMTrans-Serial0/1
bandwidth remaining percent 50
set dscp af21
class SDMVoice-Serial0/1
priority percent 58
set dscp ef
!
!
interface FastEthernet0/0
ip address xxx
ip flow ingress
ip flow egress
speed 100
full-duplex
no cdp enable
!
interface Serial0/0
bandwidth 1544
ip address xxx
ip load-sharing per-packet
ip nbar protocol-discovery
encapsulation ppp
ip route-cache flow
no dce-terminal-timing-enable
no cdp enable
service-policy output SDM-Pol-Serial0/0
!
interface Serial0/1
bandwidth 1544
ip address xxx
ip load-sharing per-packet
ip nbar protocol-discovery
encapsulation ppp
ip route-cache flow
no dce-terminal-timing-enable
no cdp enable
service-policy output SDM-Pol-Serial0/1
!
router bgp xxx
bgp log-neighbor-changes
!
address-family ipv4
no auto-summary
no synchronization
network xxx
exit-address-family
!
address-family nsap
maximum-paths 4
no synchronization
exit-address-family
!
ip route 0.0.0.0 0.0.0.0 Serial0/0
ip route 0.0.0.0 0.0.0.0 Serial0/1
ip route xxx Serial0/0
!
control-plane
!
end
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