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Cisco OSPF over GRE tunnel
Components Used -Cisco 7206VXR (NPE200) Router <br/> -Debian 2.6.8-1-386<br/> Network MAP The ideea of this plan is to see the network behind the 7200 Router on the Linux server using OSPF....
View ArticleCisco IPIP Tunnels
Linux (192.168.2.1):/sbin/ip tunnel add tunl1 mode ipip remote 192.168.1.1 /sbin/ifconfig tunl1 192.168.3.2 pointopoint 192.168.3.1 netmask 255.255.255.252 mtu 1500Cisco (192.168.1.1):interface Tunnel0...
View ArticleShow Interface Reference
Show Interface Reference router#sh int Serial3/0/23:0Serial3/0/23:0 is up, line protocol is up Hardware is PA-MC-2T3+ Description: SDA Freight Data Corporation T1 CIR/CT3 (sdafda)75hcre000944-001...
View ArticleBgp dampening
Cisco BGP dampening Description: When a route fails, a routing update is sent to withdraw the route from the network’s routing tables. When the route is re-enabled, the change in availability is also...
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Internetwork
Internetwork The Frontier Optronics Network now encompasses 11 hub cities. The northern route connects Los Angeles, San Francisco, Kansas City, Cleveland, and New York City at OC-48c or 2.5 Gbps...
View ArticleRoute servers
Route servers: colt = telnet route-server.colt.net cerf = telnet route-server.cerf.net att = telnet route-server.cbbtier3.att.net att1 = telnet route-server.ip.att.net bbn = telnet...
View ArticleCisco Tacacs configuration
aaa new-model aaa authentication login default group tacacs+ enable aaa accounting exec default start-stop group tacacs+ aaa accounting commands 15 default stop-only group tacacs+ aaa accounting...
View ArticleBGP regexp
Regular Expression:show ip bgp regexp [AS]$ - list all network paths with that AS show ip bgp regexp _AS_ - match any route going through AS show ip bgp regexp _AS AS_ - match any route passed through...
View ArticleAS-path filtering
Cisco way: ip as-path access-list 1 deny _1234$ ip as-path access-list 1 deny _5678$ ip as-path access-list 1 permit .* router bgp 100 neighbor 192.168.0.1 remote-as 200 neighbor 192.168.0.1 des...
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