产品好 2007-11-12 12:59
（EIGRP实验）EIGRP完美关闭
[table][tr][td=1,1,536][align=left][b][font=宋体][size=12pt]目录[/size][/font][/b][/align]
[align=left][b][color=#336666][font=宋体][size=10.5pt]提要[/size][/font][/color][/b][/align]
[align=left][b][color=#336666][font=宋体][size=10.5pt]正文[/size][/font][/color][/b][/align]
[align=left][color=#336666][font=宋体][size=10.5pt]TOPO[/size][/font][/color][color=#336666][font=宋体][size=10.5pt]如下[/size][/font][/color][/align]
[align=left][color=#336666][font=宋体][size=10.5pt]基本配置如下[/size][/font][/color][/align]
[align=left][b][color=#336666][font=宋体][size=10.5pt]验证[/size][/font][/color][/b][/align]
[align=left][b][color=#336666][font=宋体][size=10.5pt]附注[/size][/font][/color][/b][/align]
[align=center][b][font=宋体][size=9pt][size=3][/size][/size][/font][/b][/align]
[align=left][b][color=#336666][font=宋体][size=10.5pt][/size][/font][/color][/b][/align]
[/td][/tr][tr][td=1,1,536][align=left][b][font=宋体][size=12pt]提要：[/size][/font][/b][b][font=宋体][size=12pt][/size][/font][/b][/align]
[align=left][font=宋体][size=12pt]讨论[/size][/font][size=12pt]EIGRP[/size][font=宋体][size=12pt]中的[/size][/font][b][size=12pt]EIGRP [b]Graceful Shutdown[/b][/size][/b][font=宋体][size=12pt]这个特性[/size][/font][b][size=12pt][/size][/b][/align]
[align=left][img=288,315]http://www.one-tom.com/bbs/uploads/20070326_233126_d.gif[/img][img=255,264]http://www.one-tom.com/bbs/uploads/20070326_233233_e.gif[/img][b][/b][/align]
[align=left][font=宋体][size=12pt][b]•
[/b][/size][/font][b][size=12pt]You want to bring B down for maintenance; the traffic will switch to C because EIGRP will reroute around B when B is taken down[/size][/b][/align]
[align=left][font=宋体][size=12pt][b]•
[/b][/size][/font][b][size=12pt]The packets on the wire will be lost when B is taken off line, though—and this could be a lot of packets, if these are high speed links[/size][/b][/align]
[align=left][font=宋体][size=12pt][b]•
[/b][/size][/font][b][size=12pt]It’s better to get A and D to route around C while B can still forward traffic, so it happens gracefully[/size][/b][/align]
[align=left][font=宋体][size=12pt][b]•
[/b][/size][/font][b][size=12pt]To shut down routing in B, remove the EIGRP router process[/size][/b][/align]
[align=left][font=宋体][size=12pt][b]•
[/b][/size][/font][b][size=12pt]EIGRP will send a goodbye message, notifying its peers that it is going down, before it cleans up the entries in the routing table[/size][/b][/align]
[align=left][font=宋体][size=12pt][b]•
[/b][/size][/font][b][size=12pt]B can send a goodbye message telling A and D to reset their neighbor relationships[/size][/b][/align]
[align=left][font=宋体][size=12pt][b]•
[/b][/size][/font][b][size=12pt]12.3(2.3)B 12.3(1.4)T 12.3(1.4) or later[/size][/b][/align]
[align=left][font=宋体][size=12pt][b]•
[/b][/size][/font][b][size=12pt]Old code: reset neighbor due to K value mismatch[/size][/b][/align]
[align=left][font=宋体][size=12pt][b]•
[/b][/size][/font][b][size=12pt]New code: reset neighbor due to goodbye message[/size][/b][/align]
[align=left][b][font=宋体][size=12pt]TOPO[/size][/font][/b][b][font=宋体][size=12pt]如下[/size][/font][/b][b][font=宋体][size=12pt]：[/size][/font][/b][/align]
[align=left][b][font=宋体][size=12pt][/size][/font][/b][/align]
[align=left][font=宋体][size=12pt][img=267,344]http://www.one-tom.com/bbs/uploads/20070326_233316_f.gif[/img] [/size][/font][/align]
[align=left][b][font=宋体][size=12pt]基本配置如下[/size][/font][/b][b][font=宋体][size=12pt]：[/size][/font][/b][/align]
[align=left][font=Wingdings][size=12pt]l
[/size][/font][b][font=宋体][size=12pt]R1[/size][/font][/b][/align]
[align=left][font=Wingdings][size=12pt]l
[/size][/font][b][font=宋体][size=12pt]R2[/size][/font][/b][/align]
[align=left][font=Wingdings][size=12pt]l
[/size][/font][b][font=宋体][size=12pt]R3[/size][/font][/b][/align]
[align=left][font=Wingdings][size=12pt]l
[/size][/font][b][font=宋体][size=12pt]R4[/size][/font][/b][/align]
[align=left][b][font=宋体][size=12pt] [/size][/font][/b][/align]
[table][tr][td][align=center][b][font=宋体][size=12.5pt]R1[/size][/font][/b][b][font=宋体][size=12.5pt][/size][/font][/b][/align]
[/td][/tr][tr][td][align=left][size=12pt]interface Ethernet0/0.12[/size][/align]
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encapsulation dot1Q 12[/size][/align]
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ip address 12.1.1.1 255.255.255.0[/size][/align]
[align=left][size=12pt]![/size][/align]
[align=left][size=12pt]interface Serial2/0[/size][/align]
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ip address 13.1.1.1 255.255.255.0[/size][/align]
[align=left][size=12pt]
![/size][/align]
[align=left][size=12pt]router eigrp 1[/size][/align]
[align=left][size=12pt]
network 12.1.1.0 0.0.0.255[/size][/align]
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network 13.1.1.0 0.0.0.255[/size][/align]
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no auto-summary[/size][/align]
[/td][/tr][/table][align=left][font=宋体][size=12pt] [/size][/font][/align]
[table][tr][td][align=center][b][font=宋体][size=12.5pt]R2[/size][/font][/b][b][font=宋体][size=12.5pt][/size][/font][/b][/align]
[/td][/tr][tr][td][align=left][size=12pt]interface Ethernet0/0.12[/size][/align]
[align=left][size=12pt]
encapsulation dot1Q 12[/size][/align]
[align=left][size=12pt]
ip address 12.1.1.2 255.255.255.0[/size][/align]
[align=left][size=12pt]![/size][/align]
[align=left][size=12pt]interface Ethernet0/0.24[/size][/align]
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encapsulation dot1Q 24[/size][/align]
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ip address 24.1.1.2 255.255.255.0[/size][/align]
[align=left][size=12pt]![/size][/align]
[align=left][font=宋体][size=12pt]！[/size][/font][size=12pt][/size][/align]
[align=left][size=12pt]router eigrp 1[/size][/align]
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network 12.1.1.0 0.0.0.255[/size][/align]
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network 24.1.1.0 0.0.0.255[/size][/align]
[align=left][size=12pt]
no auto-summary[/size][/align]
[/td][/tr][/table][align=left][font=宋体][size=12pt] [/size][/font][/align]
[table][tr][td][align=center][b][font=宋体][size=12.5pt]R3[/size][/font][/b][b][font=宋体][size=12.5pt][/size][/font][/b][/align]
[/td][/tr][tr][td][align=left][size=12pt]interface Ethernet0/0.34[/size][/align]
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encapsulation dot1Q 34[/size][/align]
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ip address 34.1.1.3 255.255.255.0[/size][/align]
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no snmp trap link-status[/size][/align]
[align=left][size=12pt]![/size][/align]
[align=left][size=12pt]interface Serial1/0[/size][/align]
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ip address 13.1.1.3 255.255.255.0[/size][/align]
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serial restart-delay 0[/size][/align]
[align=left][size=12pt]![/size][/align]
[align=left][size=12pt]router eigrp 1[/size][/align]
[align=left][size=12pt]
network 13.1.1.0 0.0.0.255[/size][/align]
[align=left][size=12pt]
network 34.1.1.0 0.0.0.255[/size][/align]
[align=left][size=12pt]
no auto-summary[/size][/align]
[align=left][size=12pt] [/size][/align]
[/td][/tr][/table][align=left][font=宋体][size=12pt] [/size][/font][/align]
[table][tr][td][align=center][b][font=宋体][size=12.5pt]R4[/size][/font][/b][/align]
[/td][/tr][tr][td][align=left][size=12pt]interface Loopback0[/size][/align]
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ip address 4.4.4.4 255.255.255.0[/size][/align]
[align=left][size=12pt]![/size][/align]
[align=left][size=12pt]interface Ethernet0/0.24[/size][/align]
[align=left][size=12pt]
encapsulation dot1Q 24[/size][/align]
[align=left][size=12pt]
ip address 24.1.1.4 255.255.255.0[/size][/align]
[align=left][size=12pt]
![/size][/align]
[align=left][size=12pt]interface Ethernet0/0.34[/size][/align]
[align=left][size=12pt]
encapsulation dot1Q 34[/size][/align]
[align=left][size=12pt]
ip address 34.1.1.4 255.255.255.0[/size][/align]
[align=left][size=12pt]
![/size][/align]
[align=left][size=12pt]![/size][/align]
[align=left][size=12pt]router eigrp 1[/size][/align]
[align=left][size=12pt]
network 4.4.4.0 0.0.0.255[/size][/align]
[align=left][size=12pt]
network 24.1.1.0 0.0.0.255[/size][/align]
[align=left][size=12pt]
network 34.1.1.0 0.0.0.255[/size][/align]
[align=left][size=12pt]
no auto-summary[/size][/align]
[/td][/tr][/table][align=left][font=宋体][size=12pt] [/size][/font][/align]
[align=left][font=宋体][size=12pt] [/size][/font][/align]
[align=left][b][font=宋体][size=12pt]验证[/size][/font][/b][b][font=宋体][size=12pt]：[/size][/font][/b][/align]
[align=left][font=宋体][size=12pt]测试[/size][/font][size=12pt][font=Times New Roman]⑴[/font][/size][font=宋体][size=12pt]：[/size][/font][size=12pt][/size][/align]
[align=left][font=宋体][size=12pt]打开[/size][/font][size=12pt]r1[/size][font=宋体][size=12pt]的[/size][/font][size=12pt]debug ip eigrp[/size][font=宋体][size=12pt]，在[/size][/font][size=12pt]r2[/size][font=宋体][size=12pt]上关闭[/size][/font][size=12pt]eigrp[/size][font=宋体][size=12pt]进程[/size][/font][size=12pt][/size][/align]
[align=left][size=12pt]r1#debug ip eigrp [/size][/align]
[align=left][size=12pt]IP-EIGRP Route Events debugging is on[/size][/align]
[align=left][size=12pt]r1[/size][font=宋体][size=12pt]＃[/size][/font][size=12pt][/size][/align]
[align=left][size=12pt]*Mar 26 14:58:57.375: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 1: Neighbor 12.1.1.2 (Ethernet0/0.12) is down: Interface Goodbye received
[/size][font=宋体][size=12pt]收到[/size][/font][size=12pt]goodbye[/size][font=宋体][size=12pt]消息[/size][/font][size=12pt] [/size][/align]
[align=left][size=12pt]r[/size][size=12pt]1#[/size][/align]
[align=left][size=12pt]*Mar 26 14:58:57.419: IP-EIGRP(Default-IP-Routing-Table:1): 24.1.1.0/24 - do advertise out Serial2/0[/size][/align]
[align=left][size=12pt]*Mar 26 14:58:57.419: IP-EIGRP(Default-IP-Routing-Table:1): Int 24.1.1.0/24 metric 4294967295 - 256000 4294967295[/size][/align]
[align=left][size=12pt]*Mar 26 14:58:57.475: IP-EIGRP(Default-IP-Routing-Table:1): Int 4.4.4.0/24 metric 2323456 - 1657856 665600[/size][/align]
[align=left][size=12pt]*Mar 26 14:58:57.475: IP-EIGRP(Default-IP-Routing-Table:1): Int 34.1.1.0/24 metric 2195456 - 1657856 537600[/size][/align]
[align=left][size=12pt]*Mar 26 14:58:57.475: IP-EIGRP(Default-IP-Routing-Table:1): Processing incoming UPDATE packet[/size][/align]
[align=left][size=12pt]*Mar 26 14:58:57.475: IP-EIGRP(Default-IP-Routing-Table:1): Int 12.1.1.0/24 M 4294967295 - 1657856 4294967295 SM 4294967295 - 1657856 4294967295[/size][/align]
[align=left][size=12pt]r1#[/size][/align]
[align=left][size=12pt]*Mar 26 14:58:57.547: IP-EIGRP(Default-IP-Routing-Table:1): Processing incoming REPLY packet[/size][/align]
[align=left][size=12pt]*Mar 26 14:58:57.547: IP-EIGRP(Default-IP-Routing-Table:1): Int 24.1.1.0/24 M 2221056 - 1657856 563200 SM 307200 - 256000 51200[/size][/align]
[align=left][size=12pt]*Mar 26 14:58:57.583: IP-EIGRP(Default-IP-Routing-Table:1): Int 24.1.1.0/24 metric 2221056 - 1657856 563200[/size][/align]
[align=left][size=12pt] [/size][/align]
[align=left][font=宋体][size=12pt]测试[/size][/font][size=12pt][font=Times New Roman]⑵[/font][/size][font=宋体][size=12pt]：在[/size][/font][size=12pt]r1[/size][font=宋体][size=12pt]上[/size][/font][size=12pt]ping 4.4.4.4 2000[/size][font=宋体][size=12pt]个包，在[/size][/font][size=12pt]r2[/size][font=宋体][size=12pt]上关闭[/size][/font][size=12pt]eigrp[/size][font=宋体][size=12pt]进程，，看是否丢包[/size][/font][size=12pt][/size][/align]
[align=left][size=12pt]r2(config)#no router eigrp 1[/size][/align]
[size=12pt][align=left][size=12pt]r1#ping [/size][/align]
[align=left][size=12pt]Protocol [ip]: [/size][/align]
[align=left][size=12pt]Target IP address: 4.4.4.4[/size][/align]
[align=left][size=12pt]Repeat count [5]: 2000[/size][/align]
[align=left][size=12pt]Datagram size [100]: [/size][/align]
[align=left][size=12pt]Timeout in seconds [2]: [/size][/align]
[align=left][size=12pt]Extended commands [n]: [/size][/align]
[align=left][size=12pt]Sweep range of sizes [n]: [/size][/align]
[align=left][size=12pt]Type escape sequence to abort.[/size][/align]
[align=left][size=12pt]Sending 2000, 100-byte ICMP Echos to 4.4.4.4, timeout is 2 seconds:[/size][/align]
[align=left][size=12pt]!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!![/size][/align]
[align=left][size=12pt]!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!![/size][/align]
[align=left][size=12pt]!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!![/size][/align]
[align=left][size=12pt]!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!![/size][/align]
[align=left][size=12pt]!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!![/size][/align]
[align=left][size=12pt]!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!![/size][/align]
[align=left][size=12pt]!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!![/size][/align]
[align=left][size=12pt]!!!!!![/size][/align]
[align=left][size=12pt]*Mar 26 14:52:50.863: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 1: Neighbor 12.1.1.2 (Ethernet0/0.12) is down: Interface Goodbye received!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!![/size][/align]
[align=left][size=12pt]!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!![/size][/align]
[align=left][size=12pt]!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!![/size][/align]
[align=left][size=12pt]!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!![/size][/align]
[align=left][size=12pt]!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!![/size][/align]
[align=left][size=12pt]!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!![/size][/align]
[align=left][size=12pt]!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!![/size][/align]
[align=left][size=12pt]!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!![/size][/align]
[align=left][/size][/align]
[align=left][font=宋体][size=12pt]发现没有丢包，并且收到[/size][/font][size=12pt]goodbye [/size][font=宋体][size=12pt]消息[/size][/font]
[font=宋体][size=12pt]，由此我们发现真的是完美[/size][/font][size=12pt]shutdown[/size][font=宋体][size=12pt]哦[/size][/font][/align]
[/td][/tr][/table]
