{"id":123,"date":"2015-05-07T12:32:58","date_gmt":"2015-05-07T12:32:58","guid":{"rendered":"http:\/\/www.safekom.pl\/blog\/?p=123"},"modified":"2015-05-11T16:38:13","modified_gmt":"2015-05-11T16:38:13","slug":"cisco-dwoch-operatorow-konfiguracja-routerow","status":"publish","type":"post","link":"https:\/\/www.safekom.pl\/blog\/cisco\/cisco-dwoch-operatorow-konfiguracja-routerow\/","title":{"rendered":"Cisco – dw\u00f3ch operator\u00f3w konfiguracja router\u00f3w"},"content":{"rendered":"

Dzi\u015b ci\u0119\u017cko dosta\u0107 adresacj\u0119 IPv4 aby uruchomi\u0107 BGP w biurze, aby mie\u0107 redundantne po\u0142\u0105czenie do Internetu. Tutaj skupi\u0119 na przypadku w kt\u00f3rym mamy dost\u0119p do Internetu przez dw\u00f3ch niezale\u017cnych dostawc\u00f3w Internetu ISP1 i ISP2. Konfiguracja poni\u017cej pozwala na dost\u0119p z adresacji prywatnej do Internetu, wszystko jest natowane na adresy publiczne kt\u00f3re s\u0105 na interfejsach Gi 0\/0<\/p>\n

 <\/p>\n

Rysunek pogl\u0105dowy:<\/p>\n

\"2_isp\"<\/a><\/p>\n

Za\u0142o\u017cenia:<\/strong><\/p>\n

Od strony Internetu:<\/p>\n\n\n\n\n\n\n
<\/td>\nRouter1<\/strong><\/td>\nRouter2<\/strong><\/td>\n<\/tr>\n
Sie\u0107<\/strong><\/td>\nx.y.z.0\/30<\/td>\nw.x.y.0\/30<\/td>\n<\/tr>\n
Int Gi 0\/0 routera naszego<\/b><\/td>\nx.y.z.1\/30<\/td>\nw.x.y.1\/30<\/td>\n<\/tr>\n
ISP i nasz gatawey do Internetu<\/strong><\/td>\nx.y.z.2\/30<\/td>\nw.x.y.2\/30<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

LAN:<\/p>\n\n\n\n\n\n\n
<\/td>\nvlan 10\u00a010.10.10.0\/24<\/strong><\/td>\nvlan 20\u00a010.10.20.0\/24<\/strong><\/td>\n<\/tr>\n
Router 1 int gi 0\/1.vlan<\/strong><\/td>\n10.10.10.1<\/td>\n10.10.20.1<\/td>\n<\/tr>\n
Router 2\u00a0int gi 0\/1.vlan<\/strong><\/td>\n10.10.10.2<\/td>\n10.10.20.2<\/td>\n<\/tr>\n
HSRP<\/strong><\/td>\n10.10.10.254<\/td>\n10.10.20.254<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

DHCP<\/p>\n\n\n\n\n\n
<\/td>\nVlan 10 pool<\/strong><\/td>\nvlan 20 pool<\/strong><\/td>\n<\/tr>\n
Router 1<\/strong><\/td>\nod 10.10.10.10 do 10.10.10.100<\/td>\nod 10.10.20.10 do 10.10.20.100<\/td>\n<\/tr>\n
Router 2<\/strong><\/td>\nod 10.10.10.101 do 10.10.10.200<\/td>\nod 10.10.20.101 do 10.10.20.200<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Konfiguracja:<\/strong><\/p>\n

Konfiguracja interfejsu od strony Internetu:<\/p>\n\n\n\n\n
Router 1<\/strong><\/td>\nRouter 2<\/strong><\/td>\n<\/tr>\n
\u00a0interface GigabitEthernet0\/0<\/code>
\n description\u00a0ISP1<\/code>
\n ip address x.y.z.1 \u00a0255.255.255.252<\/code><\/td>\n		\u00a0interface GigabitEthernet0\/0<\/code>
\ndescription\u00a0ISP2<\/code>
\nip address w.y.z.1 \u00a0255.255.255.252<\/code><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Routing domy\u015blny<\/p>\n\n\n\n\n
Router 1<\/strong><\/td>\nRouter 2<\/strong><\/td>\n<\/tr>\n
\u00a0ip route 0.0.0.0 0.0.0.0\u00a0x.y.z.2<\/code><\/td>\nip route 0.0.0.0 0.0.0.0 w.y.z.2<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Lan<\/p>\n

Konfiguracja IP na interfejsach od strony LAN<\/p>\n\n\n\n\n\n
<\/td>\nRouter 1<\/strong><\/td>\nRouter 2<\/strong><\/td>\n<\/tr>\n
VLAN10<\/strong><\/td>\ninterface GigabitEthernet0\/1.10<\/code>
\n description VLAN10<\/code>
\n encapsulation dot1Q 10<\/code>
\n ip address\u00a010.10.10.1 255.255.255.0<\/code><\/td>\n		interface GigabitEthernet0\/1.10<\/code>
\ndescription VLAN10<\/code>
\nencapsulation dot1Q 10<\/code>
\nip address\u00a010.10.10.2 255.255.255.0<\/code><\/td>\n<\/tr>\n
VLAN20<\/strong><\/td>\ninterface GigabitEthernet0\/1.20<\/code>
\ndescription VLAN20<\/code>
\nencapsulation dot1Q 20<\/code>
\nip address\u00a010.10.20.1 255.255.255.0<\/code><\/td>\n		interface GigabitEthernet0\/1.20<\/code>
\ndescription VLAN20<\/code>
\nencapsulation dot1Q 20<\/code>
\nip address\u00a010.10.20.2 255.255.255.0<\/code><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Konfiguracja HSRP<\/p>\n

Warto\u015b\u0107 domy\u015blna dla priority jest to 100 – czy wi\u0119ksza warto\u015b\u0107 tym wi\u0119kszy priorytet.<\/p>\n\n\n\n\n\n
<\/td>\nRouter 1<\/strong><\/td>\nRouter 2<\/strong><\/td>\n<\/tr>\n
VLAN10<\/strong><\/td>\ninterface GigabitEthernet0\/1.10<\/code>
\n standby version 2<\/code>
\n standby 1 ip 10.10.10.254<\/code>
\n standby 1 priority 110<\/code>
\n standby 1 preempt<\/code><\/td>\n		interface GigabitEthernet0\/1.10<\/code>
\n standby version 2<\/code>
\n standby 1 ip 10.10.10.254<\/code>
\n standby 1 preempt<\/code><\/td>\n<\/tr>\n
VLAN20<\/strong><\/td>\ninterface GigabitEthernet0\/1.20<\/code>
\n standby version 2<\/code>
\n standby 1 ip\u00a010.10.20.254<\/code>
\n standby 1 priority 110<\/code>
\n standby 1 preempt<\/code><\/td>\n		interface GigabitEthernet0\/1.20<\/code>
\n standby version 2<\/code>
\n standby 1 ip 10.10.20.254<\/code>
\n standby 1 preempt<\/code><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Konfiguracja DHCP<\/p>\n

Jak mamy serwer DHCP w sieci zawsze mo\u017cemy z niego skorzysta\u0107. Ja nie mia\u0142em odr\u0119bnego pude\u0142ka (serwera) kt\u00f3ry m\u00f3g\u0142 by pe\u0142ni\u0107 tak\u0105 rol\u0119. wykorzysta\u0142em do tego owe routery.<\/p>\n\n\n\n\n\n
<\/td>\nRouter 1<\/strong><\/td>\nRouter 2<\/strong><\/td>\n<\/tr>\n
VLAN10<\/strong><\/td>\nip dhcp pool vlan10<\/code>
\n network\u00a010.10.10.0 255.255.255.0<\/code>
\n default-router 10.10.10.254<\/code>
\n dns-server 8.8.8.8 \/\/ lub inny serwer DNS<\/code><\/td>\n		ip dhcp pool vlan20<\/code>
\n network\u00a010.10.20.0 255.255.255.0<\/code>
\n default-router 10.10.20.254<\/code>
\n dns-server 8.8.8.8\u00a0\/\/ lub inny serwer DNS<\/code><\/td>\n<\/tr>\n
VLAN20<\/strong><\/td>\nip dhcp pool\u00a0vlan20<\/code>
\n network 10.10.20.0 255.255.255.0<\/code>
\n default-router 10.10.10.254<\/code>
\n dns-server 8.8.8.8\u00a0\/\/ lub inny serwer DNS<\/code><\/td>\n		ip dhcp pool\u00a0vlan20<\/code>
\n network 10.10.20.0 255.255.255.0<\/code>
\n default-router 10.10.10.254<\/code>
\n dns-server 8.8.8.8\u00a0\/\/ lub inny serwer DNS<\/code><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

DHCP – adresy kt\u00f3re nie b\u0119d\u0105 rozdawane przez nasz serwer.<\/p>\n\n\n\n\n\n
<\/td>\nRouter 1<\/strong><\/td>\nRouter 2<\/strong><\/td>\n<\/tr>\n
VLAN10<\/strong><\/td>\nip dhcp excluded-address 10.10.10.1 10.10.10.9<\/code>ip\u00a0dhcp excluded-address 10.10.10.101 10.10.10.254<\/span><\/td>\nip dhcp excluded-address 10.10.10.1 10.10.10.100<\/code>ip <\/code>dhcp excluded-address 10.10.10.201 10.10.10.254<\/code><\/td>\n<\/tr>\n
VLAN20<\/strong><\/td>\nip dhcp excluded-address 10.10.20.1 10.10.20.9<\/code>ip <\/code>dhcp excluded-address 10.10.20.101 10.10.20.254<\/code><\/td>\nip dhcp excluded-address 10.10.20.1 10.10.20.100<\/code>ip dhcp excluded-address 10.10.20.201 10.10.20.254<\/code><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

Konfiguracja IP SLA – pozwoli to na automatyczne monitorowanie dost\u0119pno\u015bci dost\u0119pno\u015bci \u0142\u0105cza ISP1 – jest to preferowane \u0142\u0105cze. Konfiguracja jest tylko po stronie Router 1.<\/p>\n\n\n\n
Router 1<\/strong><\/td>\ntrack 1 ip sla 1 reachability<\/code>
\n ip sla 1<\/code>
\n icmp-echo 8.8.8.8 source-ip x.y.z.1<\/code>
\n threshold 2<\/code>
\n timeout 1000<\/code>
\n frequency 3<\/code>
\n ip sla schedule 1 life forever start-time now \/\/ uruchamiamy proces sla\u00a0<\/code><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

dodajemy w konfiguracji HSRP co ma zrobi\u0107 gdy IP SLA wykryje pad \u0142\u0105cza<\/p>\n\n\n\n\n
<\/td>\nvlan 10<\/strong><\/td>\nvlan 20<\/strong><\/td>\n<\/tr>\n
Router1<\/strong><\/td>\ninterface GigabitEthernet0\/1.10\u00a0<\/code>standby 1 track 1 decrement 20<\/code>\/\/ obni\u017camy warto\u015b\u0107 priority z 110 na 90<\/code><\/td>\ninterface GigabitEthernet0\/1.20\u00a0<\/code>standby 1 track 1 decrement 20<\/code>\/\/\u00a0obni\u017camy warto\u015b\u0107 priority z 110 na 90<\/code><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Konfiguracja NAT<\/p>\n

Przygotowanie Access listy<\/p>\n\n\n\n\n
<\/td>\nRouter 1<\/strong><\/td>\nRouter 2<\/strong><\/td>\n<\/tr>\n
ACL<\/strong><\/td>\naccess-list 100 remark ====NAT to INTERNET====<\/code>
\n <\/code>access-list 100 permit ip 10.10.10.0 0 0.0.0.255 any<\/code>
\n access-list 100 permit ip 10.10.20.0\u00a00.0.0.255 any<\/code><\/td>\n		access-list 100 remark ====NAT to INTERNET====<\/code>
\n <\/code>access-list 100 permit ip 10.10.10.0 0 0.0.0.255 any<\/code>
\n access-list 100 permit ip 10.10.20.0\u00a00.0.0.255 any<\/code><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Konfiguracja NAT w trybie wszystko nat’uj na IP publiczne Interfejsu Gi 0\/0<\/p>\n\n\n\n\n
Router 1 i 2<\/span><\/span><\/strong><\/td>\n<\/tr>\n
ip nat inside source list 100 interface GigabitEthernet0\/0 overload
\n<\/span><\/span><\/code><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Konfiguracja po stronie interfejsu Gi 0\/0:<\/p>\n\n\n\n\n
Router 1<\/span><\/span><\/strong><\/td>\nRouter 2<\/span><\/span><\/strong><\/td>\n<\/tr>\n
interface GigabitEthernet0\/0 <\/code>
\nip nat outside<\/code><\/td>\n		interface GigabitEthernet0\/0 <\/code>
\nip nat outside<\/code><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Powy\u017csza konfiguracja pozwala na dost\u0119p do Internetu w obu vlanach.<\/p>\n

Sprawdzenie IP SLA<\/p>\n

#show track ip brief\r\nTrack Object           Parameter    Value Last Change\r\n1     ip sla 1         reachability Up    00:15:16<\/pre>\n
#show ip sla statistics\r\nIPSLAs Latest Operation Statistics\r\n\r\nIPSLA operation id: 1\r\n Latest RTT: 24 milliseconds\r\nLatest operation start time: 15:55:07 UTC Mon May 11 2015\r\nLatest operation return code: OK\r\nNumber of successes: 213\r\nNumber of failures: 2\r\nOperation time to live: Forever<\/pre>\n
#show track\r\nTrack 1\r\n IP SLA 1 reachability\r\n Reachability is Up\r\n 4994 changes, last change 00:18:25\r\n Latest operation return code: OK\r\n Latest RTT (millisecs) 24\r\n Tracked by:\r\n HSRP GigabitEthernet0\/1.10 1\r\n HSRP GigabitEthernet0\/1.20 1<\/pre>\n
Sprawdzamy status HSRP – poni\u017cej wykonana komenda na Router1 (aktywnym w HSRP)<\/p>\n
#show standby brief\r\n                  P indicates configured to preempt.\r\n                  |\r\nInterface Grp Pri P State  Active Standby    Virtual IP\r\nGi0\/1.10  1   110 P Active local  10.10.10.2 10.10.10.254\r\nGi0\/1.20  1   110 P Active local  10.10.20.2 10.10.20.254<\/pre>\n
 <\/p>\n","protected":false},"excerpt":{"rendered":"
Dzi\u015b ci\u0119\u017cko dosta\u0107 adresacj\u0119 IPv4 aby uruchomi\u0107 BGP w biurze, aby mie\u0107 redundantne po\u0142\u0105czenie do Internetu. Tutaj skupi\u0119 na przypadku w kt\u00f3rym mamy dost\u0119p do Internetu przez dw\u00f3ch niezale\u017cnych dostawc\u00f3w Internetu ISP1 i ISP2. Konfiguracja poni\u017cej pozwala na dost\u0119p z adresacji prywatnej do Internetu, wszystko jest natowane na adresy publiczne kt\u00f3re s\u0105 na interfejsach Gi […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[4],"tags":[13,44,50,45,51],"class_list":["post-123","post","type-post","status-publish","format-standard","hentry","category-cisco","tag-cisco","tag-hsrp","tag-ip-sla","tag-nat","tag-track"],"yoast_head":"\nCisco - dw\u00f3ch operator\u00f3w konfiguracja router\u00f3w - SafeKom Blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.safekom.pl\/blog\/cisco\/cisco-dwoch-operatorow-konfiguracja-routerow\/\" \/>\n<meta property=\"og:locale\" content=\"pl_PL\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Cisco - dw\u00f3ch operator\u00f3w konfiguracja router\u00f3w - SafeKom Blog\" \/>\n<meta property=\"og:description\" content=\"Dzi\u015b ci\u0119\u017cko dosta\u0107 adresacj\u0119 IPv4 aby uruchomi\u0107 BGP w biurze, aby mie\u0107 redundantne po\u0142\u0105czenie do Internetu. Tutaj skupi\u0119 na przypadku w kt\u00f3rym mamy dost\u0119p do Internetu przez dw\u00f3ch niezale\u017cnych dostawc\u00f3w Internetu ISP1 i ISP2. 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