Thanks for your reminder, i think the HTML RAW tag caused the problem, send the log again. Some records found in access.log in server b, 1406185920.441 1282 172.17.210.5 TCP_MISS/200 814 GET https://serverb.domain:9443/ccm/service/com.ibm.team.scm.common.IVersionedContentService/content/com.ibm.team.filesystem/FileItem/_houAAK2yEeOvOJ84krOqLg/_EPGIsq20EeOEJLtkkn17bg/h2LjUv8WJVDwJ3rcbA6_u3fNuJylQ0sQlSZdRL_IMkA - FIRSTUP_PARENT/172.17.96.148 application/octet-stream 1406185921.151 46349 172.17.210.5 TCP_MISS/200 219202 GET https://serverb.domain:9443/ccm/service/com.ibm.team.scm.common.IVersionedContentService/content/com.ibm.team.filesystem/FileItem/_hpCwIK2yEeOvOJ84krOqLg/_EN-HVK20EeOEJLtkkn17bg/rnslrsXloPXpudCIXRFjShexoc97mr7-2RxWPs7pVnI - FIRSTUP_PARENT/172.17.96.148 application/octet-stream All records found in access.log in server a, 1406185543.094 0 172.17.192.145 UDP_MISS/000 124 ICP_QUERY https://serverb.domain:9443/ccm/authenticated/identity?redirectPath=%2Fccm%2Fjauth-issue-token - HIER_NONE/- - 1406185544.871 0 172.17.192.145 UDP_MISS/000 79 ICP_QUERY https://serverb.domain:9443/ccm/auth/authrequired - HIER_NONE/- - 1406185565.202 0 172.17.192.145 UDP_MISS/000 124 ICP_QUERY https://serverb.domain:9443/ccm/authenticated/identity?redirectPath=%2Fccm%2Fjauth-issue-token - HIER_NONE/- - 1406185566.732 0 172.17.192.145 UDP_MISS/000 79 ICP_QUERY https://serverb.domain:9443/ccm/auth/authrequired - HIER_NONE/- - 1406185615.090 0 172.17.192.145 UDP_MISS/000 124 ICP_QUERY https://serverb.domain:9443/ccm/authenticated/identity?redirectPath=%2Fccm%2Fjauth-issue-token - HIER_NONE/- - -- View this message in context: http://squid-web-proxy-cache.1019090.n4.nabble.com/Sibling-cache-peer-for-a-HTTPS-reverse-proxy-tp4667011p4667048.html Sent from the Squid - Users mailing list archive at Nabble.com.