05-02-2013 09:50 AM - edited 03-04-2019 07:47 PM
I currently have a pair of Adtran Netvanta 1224R units that I want to replacce with Cisco 1760 routers. How can I translate the existing QoS (relevant sections below) on the Adtrans to work on the Cisco routers:
!
no ip firewall alg msn
no ip firewall alg h323
!
qos map Qos1 20
match dscp 46
match precedence 5
priority 1024
qos map QoS1 21
match list QoSACL
set dscp 46
qos queue-type wrr 25 25 25 expedite
!
interface ppp 1
qos-policy out QoS1
!
ip access-list extended QoSACL
permit tcp any any eq 1720
permit udp any any eq 1718
permit udp any any eq 1719
Thanks
05-06-2013 02:58 AM
Disclaimer
The Author of this posting offers the information contained within this posting without consideration and with the reader's understanding that there's no implied or expressed suitability or fitness for any purpose. Information provided is for informational purposes only and should not be construed as rendering professional advice of any kind. Usage of this posting's information is solely at reader's own risk.
Liability Disclaimer
In no event shall Author be liable for any damages whatsoever (including, without limitation, damages for loss of use, data or profit) arising out of the use or inability to use the posting's information even if Author has been advised of the possibility of such damage.
Posting
What's the IOS version, serial port type, available bandwidth?
05-06-2013 09:59 AM
Three of the routers are 'C1700 Software (C1700-IPBASE-M), Version 12.3(2)T8' and one is 'C1700 Software (C1700-Y-M), Version 12.2(15)T10'. The serial port is a WIC-1DSU-T1 on all with the full 1.544Mbps bandwidth available. I'm not positive on the specific settings for the serial link yet.
What's the difference between the 'IPBASE-M' and 'Y-M' IOS versions?
05-06-2013 12:11 PM
Disclaimer
The Author of this posting offers the information contained within this posting without consideration and with the reader's understanding that there's no implied or expressed suitability or fitness for any purpose. Information provided is for informational purposes only and should not be construed as rendering professional advice of any kind. Usage of this posting's information is solely at reader's own risk.
Liability Disclaimer
In no event shall Author be liable for any damages whatsoever (including, without limitation, damages for loss of use, data or profit) arising out of the use or inability to use the posting's information even if Author has been advised of the possibility of such damage.
Posting
What's the difference between the 'IPBASE-M' and 'Y-M' IOS versions?
Probably close to the same - but as different versions, packing names often differ. Older IOS has special IOS versions per new software feature or new hardware feature.
Not 100% sure of what the Adtran QoS does, or why gatekeeper traffic being set to DSCP EF, but you might try:
class-map match-any LLQ
match precedence 5
policy-map Sample
class LLQ
priority 1024
class class-default
fair-queue
interface serial #
service-policy output Sample
06-24-2013 02:20 PM
Thanks Joseph. From your answer, I was able to get a little more info. I think you were missing the Access list that would tell the router what should be given priority. It seems that without an ACL, nothing would match so nothing would be given priority.
I came up with the following:
**************
class-map match-any voice-traffic
match access-group 101
match precedence 5
policy-map voice-policy
class voice-traffic
priority 1024
class class-default
fair-queue
interface Serial0/0
service-policy output voice-policy
access-list 101 permit tcp any any eq 1720
access-list 101 permit udp any any eq 1718
access-list 101 permit udp any any eq 1719
**************
If I read the Adtran config right, they are using the 'qos map QoS1 21' to set TCP/1720, UDP/1718 & UDP/1719 packets with a DCSP codepoint value of 46, then using 'qos map Qos1 20' to apply critical precidence to all packets with the DCSP copdepoint 46 value and have that map applied to the serial interface.
The way I have the Cisco configured, the same thing should be done without retagging any packets. Or am I off base?
Is there any command that I can run on the router to see if LLQ is actually doing anything?
Discover and save your favorite ideas. Come back to expert answers, step-by-step guides, recent topics, and more.
New here? Get started with these tips. How to use Community New member guide