Missing Routes - Example I
Time to debug!!
access-list 100 permit ip host 7.0.0.0 host 255.0.0.0
R1# debug ip bgp update 100
Tell R2 to resend his UPDATEs
R2# clear ip bgp 1.1.1.1 soft out
R1 shows us something interesting
*Mar 1 21:50:12.410: BGP(0): 2.2.2.2 rcv UPDATE w/ attr: nexthop 4.4.4.4, origin i, localpref 100, metric 0, originator 100.1.1.1, clusterlist 2.2.2.2, path , community , extended community
*Mar 1 21:50:12.410: BGP(0): 2.2.2.2 rcv UPDATE about 7.0.0.0/8 -- DENIED due to: ORIGINATOR is us;
Cannot accept an update with our Router-ID as the ORIGINATOR_ID. Another means of loop detection in BGP