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- About saiyen_2002
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03-15-2011
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03-17-2011
03:24 AM
Eugene, nice bumping into you again. OK, so I do not need global mls qos. How about configuring the cos-dscp map? It seems that In this switch of mine I can not configure anything to do with dscp. Inlcuding setting mls qos trus dscp, which you advised me to do from the previous thread https://supportforums.cisco.com/message/3316031#3316031 Switch(config-if)#mls qos trust ? cos cos keyword device trusted device class Switch(config-if)#mls qos trust de Switch(config-if)#mls qos trust device ? cisco-phone Cisco IP Phone Secondly, if my cos-dscp looks like the following Switch#show mls qos maps cos-dscp Cos-dscp map: cos: 0 1 2 3 4 5 6 7 -------------------------------- dscp: 0 8 16 24 32 40 48 56 And my pbx sends out packets with dscp 46, which is not in the cos-dscp table, would everything work OK? Will my dscp be overwritten? On my wan side on the router I want to do QOS by indentifying the dscp of 46. What would be the best way to proceed with this? Thanks
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03-16-2011
05:32 PM
I am trying to configure qos on my cisco switch for voice traffic. I have managed to setup voice vlans ok on my ports like the following interface FastEthernet0/3 switchport trunk native vlan 10 switchport trunk allowed vlan 10,20 switchport mode trunk switchport voice vlan 20 mls qos trust cos spanning-tree portfast ! I have read that to use qos you have to enable globally. Problem is i do not have that comannds Switch(config)#mls qos ^ % Invalid input detected at '^' marker. Switch(config)# I am also trying to change my cos-dscp mapping. But because I do not have my mls command I can not do this Switch(config)#do show mls qos maps cos-dscp Cos-dscp map: cos: 0 1 2 3 4 5 6 7 -------------------------------- dscp: 0 8 16 24 32 40 48 56 Switch(config)#mls qos map cos-dscp 0 8 16 26 34 46 48 56 ^ % Invalid input detected at '^' marker. I have the following IOS Switch#sh ver Cisco Internetwork Operating System Software IOS (tm) C2950 Software (C2950-I6Q4L2-M), Version 12.1(22)EA2, RELEASE SOFTWARE (fc1) Copyright (c) 1986-2004 by cisco Systems, Inc. Compiled Sun 07-Nov-04 23:14 by antonino Image text-base: 0x80010000, data-base: 0x8055E000 ROM: Bootstrap program is C2950 boot loader Switch uptime is 6 days, 12 hours, 13 minutes System returned to ROM by power-on System image file is "flash:/c2950-i6q4l2-mz.121-22.EA2.bin" It says in the link https://supportforums.cisco.com/post !input.jspa?containerType=14&container=2003 that I need IOS ver 12.1(12c)EA1, but I have a newer ISO then that. Thanks
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03-15-2011
04:44 PM
Thanks for all the help Eugene. I will try all this out at work tommorw.
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03-15-2011
03:56 PM
Thanks for that Eugene, I am almost there. One last thing. How would I configure the port that is connected to my asterisk trixbox pbx? I need the IP phones to be able to log into the pbx which is on the same subnet. There is no tagging coming from the pbx, so would I just simply configure the port as an access port which is on the same VLAN as the voice VLAN?
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03-15-2011
03:16 PM
Hi Eugene, Are you saying that the simple way of switchport access vlan 100 switchport voice vlan 200 will not work at all? Or that the method you mention is the better one. My Snom360 IP Phone, does not have CDP, but it can tag the traffic with VLAN and priority. Also, If I want my data to go on the default native VLAN1, i assume I can skip the line switchport trunk native vlan 100?
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03-15-2011
03:09 PM
Thanks leolaohoo. What if I want my pc data to gon on the default native VLAN1. Do I still have to do switchport access vlan 100? Also, how would I configure the port that is connected to my PBX. I am using asterisk trixbox which will be on the same subnet as the IP phones. I need my IP phones to log into the PBX, so would I configure the port as a simple access VLAN on the same port as the voice VLAN. Like switchport access vlan 200? Thanks
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03-15-2011
02:19 PM
I have been reading through the lots of docs on how about configuring voice vlans on cisco switches, but almost all of them assume you have cisco IP phone. I can not find a definitive guide on how to configure voice vlans with non cisco phone, no CDP. I have the following setup PC ---- IP-PHONE ------ Catalyst 2950 The PC and the phone are on 2 different subnets I have read lots of docs on how to create voice vlans. some say switchport access vlan 100 switchport voice vlan 200 But I read somewhere that only works when there you CDP enabled phone. I have come across switchport trunk allowed vlan 100, 200 switchport mode trunk switchport voice vlan 200 I am confused as to which way to proceed. Some even say you have to configure dot1p encapsulation on the ports as well. My phone can tag traffic originating from itself with vlan and priority. So which would be the best way to go? Many Thanks
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03-17-2011
Eugene, nice bumping into you again.OK, so I do not need global mls
qos.How about configuring the co...
03-16-2011
I am trying to configure qos on my cisco switch for voice traffic. I
have managed to setup voice vla...
03-15-2011
Thanks for that Eugene, I am almost there. One last thing.How would I
configure the port that is con...
03-15-2011
Hi Eugene,Are you saying that the simple way ofswitchport access vlan
100switchport voice vlan 200wi...
03-15-2011
Thanks leolaohoo. What if I want my pc data to gon on the default native
VLAN1. Do I still have to d...
Public Statistics
| Date Registered | 03-15-2011 02:07 PM |
| Date Last Visited | 08-18-2017 03:53 AM |
| Total Messages Posted | 7 |
