{"id":13649,"date":"2024-09-05T15:36:04","date_gmt":"2024-09-05T07:36:04","guid":{"rendered":"http:\/\/www.killtest.com.tw\/?p=13649"},"modified":"2024-09-05T15:36:04","modified_gmt":"2024-09-05T07:36:04","slug":"%e5%90%8c%e6%97%b6%e8%bf%90%e8%a1%8c-ipv4-%e5%92%8c-ip6%e7%9a%84%e7%bd%91%e7%bb%9c%e6%9d%a5%e9%83%a8%e7%bd%b2-qos","status":"publish","type":"post","link":"https:\/\/www.killtest.com.tw\/?p=13649","title":{"rendered":"\u540c\u65f6\u8fd0\u884c IPv4 \u548c IP6\u7684\u7f51\u7edc\u6765\u90e8\u7f72 QoS"},"content":{"rendered":"\n

400-007<\/a>: Cisco Certified Design Expert<\/strong> ,CCDE\u8a8d\u8b49\u96e3\u5ea6\u9084\u662f\u6bd4\u8f03\u5927\u7684
\u8907\u7fd2\u904e\u7a0b\u4e2d\u9047\u5230\u4e00\u9053\u984c,\u4e0d\u592a\u78ba\u5b9a\u6b63\u78ba\u7b54\u6848
<\/p>\n\n\n\n

You are designing a network running both IPv4 and IPv6 to deploy QoS.
Which consideration is correct about the QoS for IPv4 and IPv6?
A.IPv4 and IPv6 traffic types can use use queuing mechanisms such as LLQ,PQ and CQ.
B. IPv6 packet classification is only available with process switching, whereas IPv4 packet classification
is available with both process switching and CEF.
C.IPv6 and IB\/4 traffic types can use a single QoS policy to match both protocols
D. Different congestion management mechanisms need to be used for IPv4 and IPv6 traffic types
\u6b63\u78ba\u7b54\u6848\u662f\u54ea\u500b<\/p>\n\n\n\n

\u6b63\u786e\u7b54\u6848\u662f A. IPv4\u548cIPv6\u6d41\u91cf\u7c7b\u578b\u53ef\u4ee5\u4f7f\u7528LLQ\uff08\u4f4e\u5ef6\u8fdf\u961f\u5217\uff09\u3001PQ\uff08\u4f18\u5148\u961f\u5217\uff09\u548cCQ\uff08\u5206\u7c7b\u961f\u5217\uff09\u7b49\u6392\u961f\u673a\u5236\u3002<\/p>\n\n\n\n

\u89e3\u6790\uff1a<\/p>\n\n\n\n

\u9009\u9879A\u63d0\u5230\u4e86LLQ\u3001PQ\u548cCQ\uff0c\u8fd9\u4e9b\u90fd\u662fQoS\u4e2d\u5e38\u7528\u7684\u6392\u961f\u673a\u5236\uff0c\u5b83\u4eec\u53ef\u4ee5\u5e94\u7528\u4e8eIPv4\u548cIPv6\u6d41\u91cf\uff0c\u56e0\u6b64\u8fd9\u4e2a\u9009\u9879\u662f\u6b63\u786e\u7684\u3002
\n\u9009\u9879B\u63d0\u5230IPv6\u6570\u636e\u5305\u5206\u7c7b\u4ec5\u5728\u5904\u7406\u4ea4\u6362\u4e2d\u53ef\u7528\uff0c\u800cIPv4\u6570\u636e\u5305\u5206\u7c7b\u5728\u5904\u7406\u4ea4\u6362\u548cCEF\uff08\u5feb\u901f\u8f6c\u53d1\uff09\u4e2d\u90fd\u53ef\u7528\u3002\u8fd9\u4e2a\u8bf4\u6cd5\u662f\u9519\u8bef\u7684\uff0c\u56e0\u4e3aIPv6\u540c\u6837\u652f\u6301CEF\u3002
\n\u9009\u9879C\u63d0\u5230IPv6\u548cIPv4\u6d41\u91cf\u7c7b\u578b\u53ef\u4ee5\u4f7f\u7528\u5355\u4e00\u7684QoS\u7b56\u7565\u6765\u5339\u914d\u8fd9\u4e24\u79cd\u534f\u8bae\u3002\u8fd9\u4e2a\u8bf4\u6cd5\u662f\u9519\u8bef\u7684\uff0c\u56e0\u4e3aIPv4\u548cIPv6\u53ef\u80fd\u9700\u8981\u4e0d\u540c\u7684QoS\u7b56\u7565\u6765\u5904\u7406\u7279\u5b9a\u7684\u6d41\u91cf\u7c7b\u578b\u3002
\n\u9009\u9879D\u63d0\u5230\u9700\u8981\u4e3aIPv4\u548cIPv6\u6d41\u91cf\u7c7b\u578b\u4f7f\u7528\u4e0d\u540c\u7684\u62e5\u585e\u7ba1\u7406\u673a\u5236\u3002\u8fd9\u4e2a\u8bf4\u6cd5\u4e5f\u662f\u9519\u8bef\u7684\uff0c\u56e0\u4e3a\u867d\u7136IPv4\u548cIPv6\u5728\u6280\u672f\u4e0a\u6709\u6240\u4e0d\u540c\uff0c\u4f46\u5b83\u4eec\u53ef\u4ee5\u4f7f\u7528\u76f8\u540c\u7684\u62e5\u585e\u7ba1\u7406\u673a\u5236\uff0c\u5982ECN\uff08\u663e\u5f0f\u62e5\u585e\u901a\u77e5\uff09\uff0c\u8fd9\u5728RFC 3168\u4e2d\u6709\u8be6\u7ec6\u63cf\u8ff0
\n\u3002
\n\u56e0\u6b64\uff0c\u6839\u636e\u4e0a\u8ff0\u5206\u6790\uff0c\u9009\u9879A\u662f\u6b63\u786e\u7684\u3002<\/p>\n\n\n\n

C\u70ba\u4ec0\u9ebc\u4e0d\u5c0d\u5462<\/p>\n\n\n\n

\u9009\u9879C\u662f\u4e0d\u6b63\u786e\u7684\uff0c\u56e0\u4e3aIPv4\u548cIPv6\u53ef\u80fd\u9700\u8981\u4e0d\u540c\u7684QoS\u7b56\u7565\u6765\u5904\u7406\u7279\u5b9a\u7684\u6d41\u91cf\u7c7b\u578b\u3002\u867d\u7136\u5b83\u4eec\u53ef\u4ee5\u5171\u7528\u4e00\u4e9bQoS\u673a\u5236\uff0c\u5982DSCP\uff08Differentiated Services Code Point\uff09\u6807\u8bb0\uff0c\u4f46\u662f\u6bcf\u79cd\u534f\u8bae\u53ef\u80fd\u9700\u8981\u7279\u5b9a\u7684\u914d\u7f6e\u548c\u8003\u8651\u3002\u4f8b\u5982\uff0cIPv4\u548cIPv6\u7684\u5305\u7ed3\u6784\u4e0d\u540c\uff0c\u8fd9\u53ef\u80fd\u4f1a\u5f71\u54cd\u5230QoS\u7b56\u7565\u7684\u5b9e\u65bd\u65b9\u5f0f\u3002\u6b64\u5916\uff0c\u67d0\u4e9bQoS\u7279\u6027\u53ef\u80fd\u5728\u4e00\u4e2a\u534f\u8bae\u4e2d\u5f97\u5230\u652f\u6301\u800c\u5728\u53e6\u4e00\u4e2a\u534f\u8bae\u4e2d\u4e0d\u652f\u6301\uff0c\u6216\u8005\u53ef\u80fd\u9700\u8981\u4e0d\u540c\u7684\u914d\u7f6e\u65b9\u6cd5\u3002<\/p>\n\n\n\n

\u5728\u5b9e\u9645\u90e8\u7f72\u4e2d\uff0c\u7f51\u7edc\u7ba1\u7406\u5458\u53ef\u80fd\u9700\u8981\u4e3aIPv4\u548cIPv6\u6d41\u91cf\u5206\u522b\u914d\u7f6eQoS\u7b56\u7565\uff0c\u4ee5\u786e\u4fdd\u6bcf\u79cd\u7c7b\u578b\u7684\u6d41\u91cf\u90fd\u80fd\u6839\u636e\u5176\u7279\u5b9a\u7684\u9700\u6c42\u548c\u7279\u6027\u5f97\u5230\u9002\u5f53\u7684\u5904\u7406\u3002\u4f8b\u5982\uff0c\u67d0\u4e9b\u5e94\u7528\u53ef\u80fd\u5728IPv6\u4e0a\u6709\u4e0d\u540c\u7684\u884c\u4e3a\u8868\u73b0\uff0c\u6216\u8005\u53ef\u80fd\u9700\u8981\u4e0d\u540c\u7684\u670d\u52a1\u8d28\u91cf\u4fdd\u8bc1\u3002\u56e0\u6b64\uff0c\u5c3d\u7ba1\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u901a\u7528\u7684QoS\u7b56\u7565\u6a21\u677f\uff0c\u4f46\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\u901a\u5e38\u9700\u8981\u5bf9\u6bcf\u79cd\u534f\u8bae\u8fdb\u884c\u5355\u72ec\u7684\u8c03\u6574\u548c\u4f18\u5316\u3002<\/p>\n\n\n\n

\u6b64\u5916\uff0c\u6839\u636e\u641c\u7d22\u7ed3\u679c\uff0c\u6211\u4eec\u53ef\u4ee5\u770b\u5230\u5728\u5b9e\u9645\u7684QoS\u914d\u7f6e\u4e2d\uff0c\u4f8b\u5982\u5728\u65b0\u534e\u4e09\u96c6\u56e2\u7684H3C\u8bbe\u5907\u4e0a\uff0cQoS\u7b56\u7565\u53ef\u4ee5\u5b9a\u4e49\u5339\u914d\u7279\u5b9a\u7684ACL\uff08Access Control List\uff09\u89c4\u5219\uff0c\u5e76\u4e14\u53ef\u4ee5\u4e3aIPv4\u548cIPv6\u6d41\u91cf\u6307\u5b9a\u4e0d\u540c\u7684\u884c\u4e3a\u3002\u8fd9\u610f\u5473\u7740\u5373\u4f7f\u662f\u76f8\u540c\u7684QoS\u7b56\u7565\uff0c\u4e5f\u53ef\u80fd\u9700\u8981\u4e3aIPv4\u548cIPv6\u6d41\u91cf\u914d\u7f6e\u4e0d\u540c\u7684\u5339\u914d\u6761\u4ef6\u548c\u884c\u4e3a\uff0c\u4ee5\u9002\u5e94\u5b83\u4eec\u5404\u81ea\u7684\u7279\u6027\u548c\u9700\u6c42\u3002<\/p>\n\n\n\n

\u56e0\u6b64\uff0c\u9009\u9879C\u7684\u8bf4\u6cd5\u201cIPv6\u548cIPv4\u6d41\u91cf\u7c7b\u578b\u53ef\u4ee5\u4f7f\u7528\u5355\u4e00\u7684QoS\u7b56\u7565\u6765\u5339\u914d\u8fd9\u4e24\u79cd\u534f\u8bae\u201d\u662f\u4e0d\u51c6\u786e\u7684\uff0c\u56e0\u4e3a\u901a\u5e38\u9700\u8981\u4e3a\u6bcf\u79cd\u534f\u8bae\u5355\u72ec\u8003\u8651\u548c\u914d\u7f6eQoS\u7b56\u7565\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

400-007: Cisco Certified Design Expert ,CCDE\u8a8d\u8b49\u96e3\u5ea6\u9084\u662f\u6bd4\u8f03\u5927\u7684\u8907\u7fd2\u904e\u7a0b\u4e2d\u9047\u5230\u4e00\u9053\u984c,\u4e0d\u592a\u78ba\u5b9a\u6b63\u78ba\u7b54\u6848 You are designing a network running both IPv4 and IPv6 to deploy QoS. Which consideration is correct about the QoS for IPv4 and IPv6? A.IPv4 and IPv6 traffic types can use use queuing mechanisms such as LLQ,PQ and CQ. B. IPv6 packet classification is only available with process switching, […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-13649","post","type-post","status-publish","format-standard","hentry","category-killtest"],"_links":{"self":[{"href":"https:\/\/www.killtest.com.tw\/index.php?rest_route=\/wp\/v2\/posts\/13649","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.killtest.com.tw\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.killtest.com.tw\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.killtest.com.tw\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.killtest.com.tw\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=13649"}],"version-history":[{"count":1,"href":"https:\/\/www.killtest.com.tw\/index.php?rest_route=\/wp\/v2\/posts\/13649\/revisions"}],"predecessor-version":[{"id":13650,"href":"https:\/\/www.killtest.com.tw\/index.php?rest_route=\/wp\/v2\/posts\/13649\/revisions\/13650"}],"wp:attachment":[{"href":"https:\/\/www.killtest.com.tw\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=13649"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.killtest.com.tw\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=13649"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.killtest.com.tw\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=13649"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}