As Path; Next Hop - Dell S6000–ON Configuration Manual

*> 7.0.0.0/30 10.114.8.33
*> 9.2.0.0/16 10.114.8.33

AS Path

The AS path is the list of all ASs that all the prefixes listed in the update have passed through.
The local AS number is added by the BGP speaker when advertising to a eBGP neighbor.
NOTE: Any update that contains the AS path number 0 is valid.
The AS path is shown in the following example. The origin attribute is shown following the AS path
information (shown in bold).
Example of Viewing AS Paths
Dell#show ip bgp paths
Total 30655 Paths
Address Hash Refcount Metric Path
0x4014154 0 3
0x4013914 0 3
0x5166d6c 0 3
0x5e62df4 0 2
0x3a1814c 0 26
0x567ea9c 0 75
0x6cc1294 0 2
0x6cc18d4 0 1
0x5982e44 0 162
0x67d4a14 0 2
0x559972c 0 31
0x59cd3b4 0 2
0x7128114 0 10
0x536a914 0 3
0x2ffe884 0 1

Next Hop

The next hop is the IP address used to reach the advertising router.
For EBGP neighbors, the next-hop address is the IP address of the connection between the neighbors.
For IBGP, the EBGP next-hop address is carried into the local AS. A next hop attribute is set when a BGP
speaker advertises itself to another BGP speaker outside its local AS and when advertising routes within
an AS. The next hop attribute also serves as a way to direct traffic to another BGP speaker, rather than
waiting for a speaker to advertise. When a next-hop BGP neighbor is unreachable, then the connection to
that BGP neighbor goes down after hold down timer expiry. The connection flap can also be obtained
immediately with Fallover enabled. BGP routes that contain the next-hop as the neighbor address are not
sent to the neighbor. You can enable this feature using the neighbor sender-side-loopdetect
command.
NOTE: For EBGP neighbors, the next-hop address corresponding to a BGP route is not resolved if
the next-hop address is not the same as the neighbor IP address.
NOTE: The connection between a router and its next-hop BGP neighbor terminates immediately
only if the router has received routes from the BGP neighbor in the past.
Border Gateway Protocol IPv4 (BGPv4)
0 0
10 0
18508 701 3549 19421 i
18508 701 7018 14990 i
18508 209 4637 1221 9249 9249 i
18508 701 17302 i
18508 209 22291 i
18508 209 3356 2529 i
18508 209 1239 19265 i
18508 701 2914 4713 17935 i
18508 209 i
18508 701 19878 ?
18508 209 18756 i
18508 209 7018 15227 i
18508 209 3356 13845 i
18508 209 701 6347 7781 i
18508 701 3561 9116 21350 i
18508 ?
18508 701 i
167