<em>Aem>、<em>Aem>. by tr<em>aem>ck<em>inem>g the st<em>aem>tus of objects <em>aem>long the p<em>aem>th to the <em>e-commerceem> module B、B. by detect<em>inem>g undesir<em>aem>ble conditions <em>aem>long the p<em>aem>th to the <em>e-commerceem> module C、C. by us<em>inem>g the MED to communic<em>aem>te the site preferences for tr<em>aem>ffic to multiple ISPs D、D. by communic<em>aem>t<em>inem>g the <em>aem>v<em>aem>il<em>aem>ble prefixes, rout<em>inem>g policies, <em>aem>nd preferences of e<em>aem>ch site to its ISP E、E. by mov<em>inem>g the SLB to <em>aem> position where selected tr<em>aem>ffic to <em>aem>nd from the servers does not go through the SLB