Examining iBGP BGP Table Entries
To better understand the BGP table with two (or more) Internet-connected routers inside the same company, start with one prefix and compare the BGP table entries on the two routers for that one prefix. By examining several such examples, you can appreciate more about the benefits and effects of these iBGP neighborships.
This section examines the BGP tables on Routers E1 and E2, focusing on the prefixes highlighted in Figure 14-2—namely, prefixes 181.0.0.0/8 and 192.135.250.0/28. To make reading the output of the show commands a little more obvious, Figure 14-3 collects some key pieces of information into a single figure. This figure shows the two BGP neighbor relationships on each router, showing the update source ...
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