Hello Folks, I am a different problem here this time It is on my Cisco 12008. I currently have two types of access cards installed into the chassis. I have a CHOC12-DS1/IR-SC card and a 6-CT3-SMB card. I am running QOS on the unit. I get this error when I do apply this command "tx-cos DS1-TX." What brought this about was when t he service policy was entered the Queing strategy did not change. It still said FIFO. In slot 1 I have a channelized 6-CT3-SMB card installed. Our previous engineer discovered that because the 6-CT3 card is an Engine 1 card and not an Engine 3 card, there are limitation of what you can do with the QOS of the line card itself. So you have to setup almost like frame-relay type setup. The question I have, is there limitation on the number of queuing strategies you can run at one time? ar1.DLLSTXHW#show int ser 1/0/1:0 Serial1/0/1:0 is up, line protocol is up Hardware is Channelized-T3 Description: Internet address is MTU 1500 bytes, BW 1536 Kbit, DLY 20000 usec, rely 255/255, load 35/255 Encapsulation PPP, crc 16, loopback not set Keepalive set (10 sec) LCP Open Open: IPCP Last input 00:00:01, output 00:00:01, output hang never Last clearing of "show interface" counters 00:13:45 Queueing strategy: fifo --à Output queue 0/40, 0 drops; input queue 0/75, 0 drops 5 minute input rate 97000 bits/sec, 56 packets/sec 5 minute output rate 214000 bits/sec, 80 packets/sec 45738 packets input, 9931625 bytes, 0 no buffer Received 0 broadcasts, 0 runts, 0 giants, 0 throttles 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort 67213 packets output, 22609196 bytes, 0 underruns 0 output errors, 0 collisions, 0 interface resets 0 output buffer failures, 0 output buffers swapped out 0 carrier transitions alarm present Timeslot(s) Used: 1-24, Transmitter delay is 0 flags non-inverted data ar1.DLLSTXHW#show run int ser 1/0/1:0 Building configuration... Current configuration : 271 bytes ! interface Serial1/0/1:0 no ip redirects no ip unreachables no ip directed-broadcast no ip proxy-arp encapsulation ppp no cdp enable service-policy output VOICE end ar1.DLLSTXHW(config-if)#tx-cos DS1-TX service-policy is already configured on interface, tx-cos is not allowed On my Channelized OC12 facilities I use the service policy command to add my Policy MAP to the interface. ar1.DLLSTXHW#show policy-map Policy Map VOICE Class VOICE priority Class class-default random-detect precedence-based ar1.DLLSTXHW#show class ar1.DLLSTXHW#show class-map Class Map match-any class-default (id 0) Match any Class Map match-any VOICE (id 7) Match ip precedence 5 ar1.DLLSTXHW#show access ar1.DLLSTXHW#show access-lists VOICE Extended IP access list VOICE permit tcp any any eq 1720 permit udp any any eq 5060 permit udp any any range 4000 6000 permit udp any any range 16384 32767 permit udp any any range 60000 65531 permit udp any any range 6001 6300 permit udp any any range 58000 59999 permit udp any any range 32768 33000 permit udp any host 206.193.221.32 permit udp host 206.193.221.32 any permit udp any host 206.193.221.36 permit udp host 206.193.221.36 any permit udp any eq 5060 any eq 5060 permit udp any host 206.193.221.35 permit udp host 206.193.221.35 any Michael Ruiz mruiz@telwestservices.com <mailto::mruiz@telwestservices.com>