ā07-03-2017 07:07 AM - edited ā03-08-2019 11:11 AM
IE5000 running 15.2(4)EA5
How do I actually use the cos to dscp mappings? When I configure "match ip dscp 46 32", it's not displayed in the running config. I have configured a table-map but how do I apply it?
table-map cos-dscp-tablemap
map from 0 to 0
map from 1 to 8
map from 2 to 16
map from 3 to 24
map from 4 to 32
map from 5 to 46
map from 6 to 48
map from 7 to 56
default copy
!
Switch(config)#class-map match-any qos-egress-realtime
Switch(config-cmap)#match ip dscp ?
<0-63> Differentiated services codepoint value
af11 Match packets with AF11 dscp (001010)
af12 Match packets with AF12 dscp (001100)
af13 Match packets with AF13 dscp (001110)
af21 Match packets with AF21 dscp (010010)
af22 Match packets with AF22 dscp (010100)
af23 Match packets with AF23 dscp (010110)
af31 Match packets with AF31 dscp (011010)
af32 Match packets with AF32 dscp (011100)
af33 Match packets with AF33 dscp (011110)
af41 Match packets with AF41 dscp (100010)
af42 Match packets with AF42 dscp (100100)
af43 Match packets with AF43 dscp (100110)
cs1 Match packets with CS1(precedence 1) dscp (001000)
cs2 Match packets with CS2(precedence 2) dscp (010000)
cs3 Match packets with CS3(precedence 3) dscp (011000)
cs4 Match packets with CS4(precedence 4) dscp (100000)
cs5 Match packets with CS5(precedence 5) dscp (101000)
cs6 Match packets with CS6(precedence 6) dscp (110000)
cs7 Match packets with CS7(precedence 7) dscp (111000)
default Match packets with default dscp (000000)
ef Match packets with EF dscp (101110)
Switch(config-cmap)#match ip dscp 46 32
Switch(config-cmap)#end
Switch#sh run
<output omitted..>
class-map match-any qos-egress-realtime
match ip dscp cs4 cs5 ef
!
The configured line "match ip dscp 46 32" is missing? I can't even define these cos to dscp values in the queue-limit command either.
ā07-03-2017 08:12 AM
DSCP 46 translates to ef and DSCP 32 translates to cs4, so when you put those DSCP values in it changes them.
It is understandably confusing. Look at this link:
http://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus1000/sw/4_0/qos/configuration/guide/nexus1000v_qos/qos_6dscp_val.pdf
Hope this helps
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