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- cisco
- Great article . Will definitely apply it to my blo...
Archive for the 'BGP' Category
IE Product Updates
Posted in BGP, CCIE R&S, CCIE Security, VPN on May 19th, 2009
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The problem of unequal-cost load-balancing... [Read the rest of this entry -->]
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The BGP section for Internetwork Expert’s CCIE R&S Lab Workbook Volume 1 Version 5 is underway. A sample of it can be viewed here. The preliminary topics covered are as followed, but will be expanded before the final revision is released. Expect updates to be posted on this section bi-weekly until completion.... [Read the rest of this entry -->]
Hi Brian,...
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One common problem that causes candidates to fail the CCIE Routing & Switching Lab Exam is the lack of complete IP reachability to various segments used in the network topology. However, due to the short time constraints of the lab exam itself it can be difficult to dedicate enough time to properly verify that reachability exists between all relevant segments. In order to solve this problem two very useful features can be implemented during the lab exam, TCL scripting on the routers and macro scripting on the Catalyst switches.... [Read the rest of this entry -->]
Sometimes people need to conditionally advertise routes into BGP table based on time of day. Say, we may want to adversite IGP prefix 150.1.1.0/24 with community 1:100 during daytime and with community 1:200 at the other time. Back in days, the procedure was easy – you had to create time based ACL, and use it in route-map to set communities:... [Read the rest of this entry -->]
For inbound updates the order of preference is: [Read the rest of this entry -->]
1. route-map
2. filter-list
3. prefix-list, distribute-list...
Prior to the support of prefix-lists in the IOS advanced filtering for BGP needed to be done using extended ACLs. The syntax for using extended ACLs is shown below:... [Read the rest of this entry -->]