Shoretel Phone System Auto QoS: Cisco 2960s, 5k's, and 5510 Firewall
We have recently deployed a Shoretel Phone system in our environment and are experiencing a tremendous amount of Packet Loss/Jitter/Latency on both internal and external phones. We want to enable QoS but would like clarification as to what we need to enable QoS on if not the whole environment. Any information relating to prior experience would be greatly appreciated.
Our network environment consists of:
(2) Nexus 5ks (all stacks connect to)
Cisco 5510 Firewall
Cisco Router (provided by carrier)
WindStream PRI (connected directly to Shoregear switch)
policy-map WAN-QoS-003 class Name set ip dscp ef priority percent 40 class Name2 bandwidth percent 36 set ip dscp af31 class class-default
set ip dscp default
Then you will need the ACL:
ip access-list extended <Name> remark Real Time Traffic - all VoIP RTP traffic permit ip any any dscp ef permit udp any any range 10000 14500
ip access-list extended <name2> permit tcp any any eq ftp permit tcp any any eq 22 permit tcp any any eq domain permit tcp any any eq telnet permit tcp any any eq www permit tcp any any eq 443 permit tcp any any eq 3389
And then add the policy (in or out) to the interface you want to apply it to:
interface FastEthernet0/0/0 description This is the desc of this interface
bandwidth 50000 ip address x.x.x.x 255.255.255.252 no ip redirects no ip unreachables no ip proxy-arp ip flow ingress ip flow egress load-interval 30 duplex full speed 100 service-policy output <name>
If you are just wanting voice to be tagged, you want ef traffic. ShoreTel uses other ports for signaling that you want want to put in another policy.
[toc:faq]The ProblemOn traditional switches whenever we have a trunk
interface we use the VLAN tag to demultiplex the VLANs. The switch needs
to determine which MAC Address table to look in for a forwarding
decision. To do this we require the switch to do...
[toc:faq]Introduction:Netdr is a tool available on a RSP720, Sup720 or
Sup32 that allows one to capture packets on the RP or SP inband. The
netdr command can be used to capture both Tx and Rx packets in the
software switching path. This is not a substitut...
IntroductionOSPF, being a link-state protocol, allows for every router
in the network to know of every link and OSPF speaker in the entire
network. From this picture each router independently runs the Shortest
Path First (SPF) algorithm to determine the b...