SWITCH 1......I have a (2) Cisco SF 300, I have created a voice VLAN 100 and have the default data VLAN 1. I have my IP phones on VLAN 100 and this is tagged traffic. My VoIP PBX server is on port G1 is set to an access port assigned to VLAN 100 only untagged and a Cisco SPA8000 to Port 8 untagged and set as access port only also to VLAN 100. Port 7 is for the data DHCP server and that is an access port only to VLAN 1.
SWITCH 2.....Switch 2 are all trunk ports VLAN 1 untagged VLAN 100 tagged
Both switches are in layer (3) mode
IPaddress VLAN 100 192.168.100_
IP address VLAN 1 192.168.16._
1. With this set up I can run (2) DHCP servers and there will be no conficts ?
2.When I plug the second switch into the first switch do I have to configer anything or just go from my G2 switch (1) to G2 switch (2) ?
3.I didnt use the CDP or LLDP I manually set my Voice Vlan 100 how do I configer QOS on it ?
4.Any suggestions on my set up does it look good ?
Thanks for any help in advanced
Yes, you can do this in the web gui, under Quality of Service.
First, under General, QoS Properties change QoS mode to Advanced.
Then go to QoS Advanced Mode drop down. Here, first go to Policy Table and create a policy:
Second, go to Class Mapping and add the following:
Then, go to Policy Class Mapping:
Then go to Policy binding and associate the policy to the applicable ports, and click apply.
Don't forget to the configuration to the switch, or it will be lost after a reboot.
Does your PBX do DHCP for the phones or does your DHCP server do both? Without being in layer 3, you'll have to make sure the DHCP server can communicate on the voice vlan, as there is no inter-vlan routing. I hope thats responsive to your quesiton.
Please remember to rate helpful posts.
Very good QOS write up. +5
Just one thing to note, I think you meant dscp
set dhcp 24 ****Sets all SIP traffic to DSCP of 24*****
set dhcp 46 ****Sets all RTP traffic to DSCP of 46*****
Okay, thank you.
If you do not use any kind of auto voice vlan, LLDP-MED, telephony OUI or auto voice vlan, your only option is advance QoS.
Any port that connections telephones + computer will need to be defined data vlan untag, voice vlan tag. When implementing the DHCP servers, they of course will be access port and respective vlan as untagged. The ports connecting the switches will be 1u, 100t.
Here is an example;
This will reclassify the traffic as it enters the switch.
ip access-list extended VoIP_SIP_List ****This is the rule looking for SIP traffic******
permit udp any any any 5060-5080
permit tcp any any any 5060-5080
ip access-list extended VoIP_RTP_List
permit udp any any 16384-32767 *****This is the rule looking for RTP traffic to PBX *****
ip access-list extended General_Traffic_List ****This rule matches all other traffic*****
permit ip any any
match access-group VoIP_SIP_List ****Seperates SIP traffic****
match access-group VoIP_RTP_List ****Seperates RTP traffic****
match access-group General_Traffic_List ****Seperates all other traffic*****
policy-map QoS_Map ****Binds all traffic selection into one rule*****
set dscp 24 ****Sets all SIP traffic to DSCP of 24*****
set dscp 46 ****Sets all RTP traffic to DSCP of 46*****
class General_Traffic_Class ****Allows all other traffic but dosn't tag*****
interface range gi1-28
service-policy input QoS_Map *****Binds Policy to ports Modify to the ports you need…*********