mplsldp建立lsp示例及解析(文件)
【正文】 的交互之后，LDP協(xié)議會自動從label range里面隨機挑選label，并根據(jù)IGP出接口和其所在網(wǎng)段針對FEC為上游進行DU(downsteam unsolicited)標簽分配(默認方式)PE1上show mpls forwardingtableP1上show mpls forwardingtableP2上show mpls forwardingtablePE2上show mpls forwardingtable 。注意ingressLSR和egress LSR都是相對數(shù)據(jù)流而言，沒有絕對的意義，并且與LDP無關(guān)。PE1P1鏈路抓包： P1P2鏈路抓包：P2PE2鏈路:通過上述ping包的內(nèi)容和LSR之間的表項可以得出如下圖的MPLS轉(zhuǎn)發(fā)過程。將彈出標簽后的IP數(shù)據(jù)包再封裝為以太幀從出接口(outgoin interface)gi2/0發(fā)送出去。 7. 附各接口接口信息：PE1sho int gigabitEthernet 1/0GigabitEthernet1/0 is up, line protocol is up Hardware is 82543, address is (bia ) Internet address is P1sho int gigabitEthernet 1/0GigabitEthernet1/0 is up, line protocol is up Hardware is 82543, address is (bia ) Internet address is P1sho int gigab
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