s架構
5、Citrix NetScaler 和 CDN 案例it
問題描述:io
Citrix 10.5.66.9軟件版本下,存在計時器bug,此bug會形成CDN長鏈接回源超過設備默認的180S,會發fin包,形成CDN產生502報錯。class
如:CDN 鏈接timeout 600s = 10分鐘,Netscaler 默認HTTP、SSL vServer Client TIMEOUT 爲180s = 3分鐘。cli
形成CDN在180s中無任何鏈接過來,Netscaler會終止鏈接,但CDN認爲180s鏈接仍存在,會繼續發送請求;但,NetScaler 認爲此連接應超時或已經斷開的連接,故CDN在180s後再次的發送請求,NetScaler發送FIN報文斷開鏈接。軟件
解決方案:終端
Netscaler 一樣設置timeout 600s = 10分鐘,CDN 鏈接timeout 600s = 10分鐘,雙方均保持檢活便可,屬於架構性細節。sso
銳捷AP-520,執行命令獲取在鏈接無線終端狀態數據。bug
SN-AC6812-GROUP1# show ac-config client by-ap-name | include WACE
========= show sta status =========
AP : ap name/radio id
Status: Speed/Power Save/Work Mode/Roaming State/MU MIMO, E = enable power save, D = disable power save請求
Total Sta Num : 3091
STA MAC IPV4 Address AP Wlan Vlan Status Asso Auth Net Auth Up time
-------------- --------------- ---------------------------------------- ---- ---- ------------------ --------------- --------------- ------------
0479.70af.a7be 10.46.146.124 C-2F-D2-WACE01/1 10 4020 11.0M/E/bgn MAB OPEN 0:03:32:46
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