Tag: Cisco

Tweet More information will be added in short.   Trunking Protocol – Form between Switch and PCs or Switch and Switch. – Tagging(VLAN ID) 1….

Tweet Here is the sample configuration for MLPPP (Multi Link PPP) on Cisco 12008 interface Multilink1 description : customer.com:MLPPP ip unnumbered Loopback0 mtu 1500 no…

Tweet 1. New IOS source port 0/22 destinaiton port 0/21 Switch#config terminal Enter configuration commands, one per line. End with CNTL/Z. Switch(config)#monitor session 1 source…

Tweet 1. Largest Weight – Cisco proprietary. Only valid on the router it is configured on. It is not passed to other routers. 2. Highest…

Once in a while, I see "IP helper-address" command for broadcast applications such as DHCP client(BOOTP), NetBIOS and so on. As you know IP helper-address…

Tweet Here is three way to filter routes / prefixes in BGP and examples Distribute-list filtering Route-map filtering Filter-list(AS filtering) filtering 1. Distribute-list neighbor 1.1.1.1…

Tweet What is a command for showing BGP table? "Show ip BGP", that’s right. Visit www.showipbgp.com to see a lot of sample BGP configurations and…

Tweet Here is the command to enable the logging of messages generated when a BGP neighbor resets, comes up, or goes down. Apply below command…

Tweet 1. Get the latest BGP community string from your ISP/upstream provider or check www.ipBalance.com web site.   2. Pick the best BGP community string…

Tweet There is much confusion on ip address ending with .0 or .255. In general, .0 would be considered as a network identifier and .255…

Tweet 1. Local Pref Value 2. As Path Length 3. Origin(prefer IGP than EGP than Incomplete – Lowest) 4. MED (Lowest value) 5. Prefer strictly…

Tweet Have you seen below error? When you are onfiguring BGP. "Oct 5 10:10:20.012: BGP: 129.186.17.1 open failed: Connection refused by remote host, open active…