● 閱讀以下說明，回答問題1至問題3,將解答填入答題紙對應(yīng)的解答欄內(nèi)。

【說明】

某企業(yè)的網(wǎng)絡(luò)結(jié)構(gòu)如圖4-1所示。企業(yè)使用雙出口，其中ISP1是高速鏈路，網(wǎng)關(guān)為202.100.1.2, ISP2 是低速鏈路，網(wǎng)關(guān)為104.114.128.2。

【問題1】(13分，每空1分)

公司內(nèi)部有兩個網(wǎng)段，192.168.1.0/24 和192.168.2.0/24, 使用三層交換機SwitchB實現(xiàn)VLAN間路由。為提高用戶體驗，網(wǎng)絡(luò)管理員決定帶寬要求較高的192.168.1.0 網(wǎng)段的的數(shù)據(jù)通過高速鏈路訪問互聯(lián)網(wǎng),帶寬要求較低的192.168.2.0網(wǎng)段的數(shù)據(jù)通過低速鏈路訪問互聯(lián)網(wǎng)。請根據(jù)描述，將以下配置代碼補充完整。

[SwitchB] acl 3000

[SwitchB-acl-adv-3000] rule permit ip source 192.168.1.0 0.0.0.255 destination 192.168.2.0 0.0.0.255

[SwitchB-acl-adv-3000] rule permit ip source 192.168.2.0 0.0.0.255 destination 192.168.1.0 0.0.0.255

[SwitchB-acl-adv-3000] quit

[SwitchB] acl 3001   //匹配內(nèi)網(wǎng)192. 168.1.0/24網(wǎng)段的用戶數(shù)據(jù)流

[SwitchB-acl-adv-3001] rule permit ip source (1) 0.0.0.255

[SwitchB acl-adv-3001] quit

[SwitchB] acl 3002   //匹配內(nèi)網(wǎng)192.168.2.0/24 網(wǎng)段的用戶數(shù)據(jù)流

[SwitchB-acl-adv-3002] rule permit ip (2) 192.168.2.0 0.0.0.255

[SwitchB-acl-adv-3002] quit

[SwitchB] traffic classifier c0 operator or

[SwitchB-classifier-c0] (3)  acl 3000

[SwitchB-classifer-c0] quit

[SwitchB] traffic classifier c1  (4) or

[SwitchB-classifier-c1] if-match acl 3001

[SwitchB-classifer-c1] quit

[SwitchB] traffic classifier c2 operator or

[SwitchB-classifer-c2] if-match acl (5)

[SwitchB-classfer-c2] (6) quit

[SwitchB] traffic behavior b0

[SwitchB-behavior-b0] (7)

[SwitchB-behavior-bO] quit

[SwitchB] traffic behavior bl

[SwitchB-behavior-b1] redirect ip-nexthop (8)

[SwitchB-behavior-b1] quit

[SwitchB] traffic behavior b2

[SwitchB-behavior-b2] redirect ip-nexthop (9)

[SwitchB-behavior-b2] quit

[SwitchB] traffic policy p1

[SwitchB-trafficpolicy-p1] classifier c0 behavior (10)

[SwitchB-trafficpolicy-p1] classifier c1 behavior (11)

[SwitchB-trafficpolicy-p1] classifier c2 behavior b2

[SwitchB-trafficpolicy-p1] quit

[SwitchB] interface (12)

[SwitchB-GigabitEthenet0/0/3] traffic-policy pl (13)

SwitchB-GigabitEthernet0/0/3] return

【問題2】(2分)

在問題1的配置代碼中，配置ACL 3000的作用是: (14)。

【問題3】(5分，每空1分)

公司需要訪問Intermet公網(wǎng),計劃通過配置NAT實現(xiàn)私網(wǎng)地址到公網(wǎng)地址的轉(zhuǎn)換,ISP1公網(wǎng)地址范圍為202.100.1.1~202.100.1.5 ；ISP2 公網(wǎng)地址范圍為104.114.128.1~104.114.128.5。

請根據(jù)描述，將下面的配置代碼補充完整。

.....

[SwitchB]nat address-group 0 202.100.1.3 202.100.1.5

[SwitchB]nat address-group 1 104.114.128.3 104.114.128.5

[SwitchB]acl number 2000

[SwitchB-acl-basic-2000]rule 5  (15) source 192.168.1.0 0.0.0.255

[SwitchB]acl number 2001

[SwitchB-acl-basic-2001]rule 5 permit source 192.168.2.0 0.0.0.255

[SwitchB]interface GigabitEthernet0/0/3

[SwitchB-GigabitEthernet0/0/3]nat outbound (16) address group 0 no-pat

[SwitchB-GigabitEthernnet0/0/3]nat outbound (17) address group 1 no-pat

[SwitchB-GigabitEthernet0/0/3]quit

[SwitchB] ip route-static 192.168.1.0 0.0.0.255 (18)

[SwitchB] ip route-static 192.168.2.0 0.0.0.255 (19)

...

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