분류없음 2016/01/07 18:24
DSCP 리눅스에서 설정 (TC와 IPTABLE 방법)
1~2. OS 설정 방법
A) Iptable 설정
# iptables -t mangle -N web-mark-dscp-24
# iptables -t mangle -A POSTROUTING -j web-mark-dscp-24
# iptables -t mangle -A web-mark-dscp-24 -p tcp -d 211.196.186.110 --dport 8080 -j DSCP --set-dscp 24
# iptables -t mangle -L -n // 정책설정확인
B) TC 설정
# modprobe sch_netem && lsmod | grep sch_netem
# tc qdisc add dev eth0 handle 1:0 root dsmark indices 1
# tc class change dev eth0 classid 1:0 dsmark mask 0x3 value 0x60
# tc filter add dev eth0 parent 1:0 protocol ip prio 1 u32 match ip dst 211.196.186.110/24 flowid 1:0
3. 정상 Mark up 상태 확인 방법 (설정서버에서 확인방법)
A) 간단하게 Ping 명령으로 확인법
# ping -Q 24 211.196.186.110
# tcpdump -nnvl eth0 host 211.196.186.110 and dst icmp
- 송신/수신 : tos값 확인 기본(0x0) 변경(0x18) 상태 확인
B) 서버 특정 포트 지정으로 확인법
# ping -Q 24 211.196.186.110
# tcpdump -nnvl eth0 host 211.196.186.110 and dst port 8088
- 송신/수신 : tos값 확인 기본(0x0) 변경(0x18) 상태 확인
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