2018年4月dns單節(jié)點(diǎn)故障倒換演練方案

1、2018年4月DNS單節(jié)點(diǎn)故障倒換演練方案為驗(yàn)證上海移動(dòng)DNS的冗余性，同時(shí)也為了提高維護(hù)人員的實(shí)戰(zhàn)處理能力和經(jīng)驗(yàn)，進(jìn)行DNS應(yīng)急演練，模擬節(jié)點(diǎn)故障故障?，F(xiàn)將演練總結(jié)如下：演練目的為了更好地保障DNS系統(tǒng)的正常運(yùn)行，縮短故障歷時(shí)，網(wǎng)絡(luò)部特組織進(jìn)行本次演練。本次演練進(jìn)行DNS設(shè)備應(yīng)急演練，以檢查DNS各節(jié)點(diǎn)在單設(shè)備故障情況下的網(wǎng)絡(luò)冗余能力,同時(shí)考察和鍛煉網(wǎng)運(yùn)中心維護(hù)人員故障及操作能力，在實(shí)踐中提高DNS系統(tǒng)維護(hù)以及故障處理能力。時(shí)間地點(diǎn)：2018年4月3日晚23：00地點(diǎn)：上海市秦橋路211號(hào)1號(hào)樓監(jiān)控大廳應(yīng)急演練參加部門及人員名單參加部門：互聯(lián)網(wǎng)運(yùn)行部參加人員：葛珊珊演練條件上海DNS系統(tǒng)運(yùn)行

2、正常演練當(dāng)天DNS系統(tǒng)無(wú)重大割接和擴(kuò)容工作演練項(xiàng)目時(shí)間點(diǎn)23:00以后演練步驟浦東節(jié)點(diǎn)DNS兩臺(tái)緩存服務(wù)器故障演練步驟如下：準(zhǔn)備部分（23：00-23：30）登錄浦東7606-3、7606-4，查看至DNS Cache-1，DNS Cache -2的端口信息，OSPF鄰居狀態(tài)是否均正常，記錄流量情況。此時(shí)至浦東7606-3、7606-4的對(duì)應(yīng)端口狀態(tài)為UP/UP，OSPF狀態(tài)為FULL。dis int Ten-GigabitEthernet 0/0/4Ten-GigabitEthernet0/0/4Current state: UPLine protocol state: UPDescript

3、ion: TO-SHPD-PS-DNS-SV04-DNsys5500-Cacheeth0Bandwidth: 10000000 kbpsMaximum transmission unit: 1500Allow jumbo frames to passBroadcast max-ratio: 100%Multicast max-ratio: 100%Unicast max-ratio: 100%Internet address: 221.181.103.201/30 (primary)IP packet frame type: Ethernet II, hardware address: ac7

4、4-0930-7e01IPv6 packet frame type: Ethernet II, hardware address: ac74-0930-7e01Loopback is not setMedia type is optical fiber, port hardware type is 10G_BASE_LR_SFPPort priority: 010Gbps-speed mode, Full-duplex modeLink speed type is autonegotiation, link duplex type is autonegotiationFlow-control

5、is not enabledMaximum frame length: 9216Last link flapping: 10 weeks 3 days 22 hours 31 minutesLast clearing of counters: Never Peak input rate: 25463720 bytes/sec, at 2018-04-28 12:05:10 dis int Ten-GigabitEthernet 0/0/4Ten-GigabitEthernet0/0/4Current state: UPLine protocol state: UPDescription: TO

6、-SHPD-PS-DNS-SV04-DNsys5500-Cacheeth0Bandwidth: 10000000 kbpsMaximum transmission unit: 1500Allow jumbo frames to passBroadcast max-ratio: 100%Multicast max-ratio: 100%Unicast max-ratio: 100%Internet address: 221.181.103.201/30 (primary)IP packet frame type: Ethernet II, hardware address: ac74-0930-

7、7e01IPv6 packet frame type: Ethernet II, hardware address: ac74-0930-7e01Loopback is not setMedia type is optical fiber, port hardware type is 10G_BASE_LR_SFPPort priority: 010Gbps-speed mode, Full-duplex modeLink speed type is autonegotiation, link duplex type is autonegotiationFlow-control is not

8、enabledMaximum frame length: 9216Last link flapping: 10 weeks 3 days 22 hours 31 minutesLast clearing of counters: Never Peak input rate: 25463720 bytes/sec, at 2018-04-28 12:05:10 Peak output rate: 13731799 bytes/sec, at 2018-04-28 12:05:10 Last 300 second input: 64401 packets/sec 10446668 bytes/se

9、c 0% Last 300 second output: 65870 packets/sec 5913506 bytes/sec 0% Input (total): 395848677532 packets, 64135410074027 bytes 395847906791 unicasts, 0 broadcasts, 685302 multicasts, 85435 pauses Input (normal): 395848592093 packets, - bytes 395847906791 unicasts, 0 broadcasts, 685302 multicasts, 854

10、35 pauses Input: 0 input errors, 0 runts, 0 giants, 0 throttles 0 CRC, 0 frame, - overruns, 0 aborts - ignored, - parity errors Output (total): 409855660369 packets, 34631399907293 bytes 409854974654 unicasts, 6 broadcasts, 685709 multicasts, 0 pauses Output (normal): 409855660369 packets, - bytes 4

11、09854974654 unicasts, 6 broadcasts, 685709 multicasts, 0 pauses Output: 0 output errors, - underruns, - buffer failures 0 aborts, 0 deferred, 0 collisions, 0 late collisions 0 lost carrier, - no carrierdis ospf peer OSPF Process 100 with Router ID 117.135.122.1 Neighbor Brief Information Area: 0.0.0

12、.0 Router ID Address Pri Dead-Time State Interface 221.181.103.202 221.181.103.202 0 34 Full/DROther XGE0/0/4dis int Ten-GigabitEthernet 0/0/4Ten-GigabitEthernet0/0/4Current state: UPLine protocol state: UPDescription: TO-SHPD-PS-DNS-SV05-DNsys5500-Cacheeth0Bandwidth: 10000000 kbpsMaximum transmissi

13、on unit: 1500Allow jumbo frames to passBroadcast max-ratio: 100%Multicast max-ratio: 100%Unicast max-ratio: 100%Internet address: 221.181.103.209/30 (primary)IP packet frame type: Ethernet II, hardware address: ac74-0930-8201IPv6 packet frame type: Ethernet II, hardware address: ac74-0930-8201Loopba

14、ck is not setMedia type is optical fiber, port hardware type is 10G_BASE_LR_SFPPort priority: 010Gbps-speed mode, Full-duplex modeLink speed type is autonegotiation, link duplex type is autonegotiationFlow-control is not enabledMaximum frame length: 9216Last link flapping: 3 days 23 hours 25 minutes

15、Last clearing of counters: Never Peak input rate: 17250193 bytes/sec, at 2018-07-06 12:05:03 Peak output rate: 9728288 bytes/sec, at 2018-07-07 18:05:05 Last 300 second input: 85794 packets/sec 13629473 bytes/sec 1% Last 300 second output: 89252 packets/sec 7946272 bytes/sec 0% Input (total): 288043

16、281970 packets, 46274342862516 bytes 288042492813 unicasts, 12 broadcasts, 683021 multicasts, 106056 pauses Input (normal): 288043175846 packets, - bytes 288042492813 unicasts, 12 broadcasts, 683021 multicasts, 106056 pauses Input: 0 input errors, 0 runts, 0 giants, 0 throttles 0 CRC, 0 frame, - ove

17、rruns, 0 aborts - ignored, - parity errors Output (total): 301696212186 packets, 25738048876524 bytes 301695525510 unicasts, 41 broadcasts, 686635 multicasts, 0 pauses Output (normal): 301696212186 packets, - bytes 301695525510 unicasts, 41 broadcasts, 686635 multicasts, 0 pauses Output: 0 output er

18、rors, - underruns, - buffer failures 0 aborts, 0 deferred, 0 collisions, 0 late collisions 0 lost carrier, - no carrierdis ospf peer OSPF Process 100 with Router ID 117.135.122.2 Neighbor Brief Information Area: 0.0.0.0 Router ID Address Pri Dead-Time State Interface 221.181.103.210 221.181.103.210

19、0 40 Full/DROther XGE0/0/4登陸web服務(wù)器，查看浦東、武勝節(jié)點(diǎn)DNS Cache-1、DNS Cache -2的CPU、內(nèi)存情況，對(duì)兩臺(tái)服務(wù)器進(jìn)行業(yè)務(wù)撥測(cè)：演練部分(23:30-0:00)模擬浦東2臺(tái)DNS緩存服務(wù)器發(fā)生故障，手動(dòng)Shutdown浦東7606-3/4相關(guān)端口。進(jìn)入浦東7606-3接口視圖，shutdown端口。sys SHPD-PA-DNS-SW03-7606int Ten-GigabitEthernet 0/0/4 SHPD-PA-DNS-SW03-7606-Ten-GigabitEthernet0/0/4shutdown進(jìn)入浦東7606-4接口視圖，shutdown端口。sys SHPD-PA-DNS-SW04-7606int Ten-GigabitEthernet 0/0/4 SHPD-PA-DNS-SW04-7606-Ten-GigabitEthernet0/0/4shutdown切換后，檢查武勝7606-3、4至DNS緩存設(shè)備端口狀態(tài)、路由狀態(tài)、驗(yàn)證流量是否已增至兩條鏈路流量之和。倒回部分（0：00-0：30）驗(yàn)證切換正常后，恢復(fù)原狀并作狀態(tài)