Patrick Denis > Cisco
Cisco
admin
March 26, 2015
When a Packet arrive on the interface of a router the router take several logical decisions base on the data plane to process the packet. The packet arrive encapsulated inside the data link frame , so the router check the…
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admin
March 26, 2015
1. Enable IS-IS 2. Configure the NET Address 3. Configure IS-IS on the interfaces and Loopback 4. Select which circuit type 5. Verify your configuration . Example Configuration : (config)#router isis (config-router)#net ( Address ) (config)#interface ( interfaces ) (config-if)#ip router…
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admin
March 26, 2015
Nat allows a single device to act as an Internet gateway for internal LAN clients by translating the clients’ internal network IP Addresses into the IP Address on the NAT-enabled gateway device.In other words, NAT runs on the device that’s connected…
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admin
March 25, 2015
Command Purpose Step 1 Router(config)# aaa new-model Enables AAA globally. Step 2 Router(config)# aaa authentication login {default |list-name} method1 [method2…] Creates a local authentication list. Step 3 Router(config)# line [aux | console | tty | vty]line-number [ending-line-number] Enters line configuration mode for the lines…
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admin
March 25, 2015
PAP is an authentication protocol that can be used with PPP. When PAP is used, the user name and the password of the originating router are sent over the link in plain text. CHAP is an authentication protocol that can…
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admin
March 24, 2015
(config)#ipv6 unicast-routing ( enable ipv6 routing ) (config)#ipv6 router eigrp “ID” (config-rtr)#router-id x.x.x.x (config-rtr)#no shutdown ( enable eigrp ipv6 routing process ) (config-if)#interface ( interface ) (config-if)#ipv6 eigrp “ID” Verifying configuration : show ipv6 protocols show ipv6 eigrp neighbors show…
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admin
March 24, 2015
Cisco NetFlow feature to capture statistics about network traffic flows that pass through a router. Although Cisco considers a series of packets a flow if they share, at a minimum, the same source and destination IP addresses, a flow s defined…
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admin
March 21, 2015
Create a tunnel on both routers (config)#interface tunnel 0 (config-if)#ip address x.x.x.x x.x.x.x (config-if)#tunnel mode gre ip ( that is what enable the tunnel and is the default ) (config-if)#tunnel source ( the source IP address of the interface that is…
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admin
March 21, 2015
ACLs can consist of multiple access list statements. Packets are compared to each statement in sequence until a match is found. The permit and deny keywords are used to indicate whether matching packets should be forwarded or dropped, respectively. If…
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admin
March 20, 2015
When switches are configured to act as a VRRP group, they will work together to present the illusion of a single default gateway to the hosts on the LAN. In the event that the switch that is the Master VRRP…
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