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Internet2 - General BGP Statistics
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Internet2 - General BGP Statistics

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The Border Gateway Protocol, or BGP, is used to advertise and receive routes from peers. It generally has two purposes. In its External mode it is used to receive routes from external customers and to advertise routes to those customers. In its Internal mode it is used by the backbone routers to inform each other of which external routes can be reached by which backbone router.

For Example, external router E uses BGP in external mode to advertise some prefixes to backbone router A. A uses BGP in internal mode to tell backbone router B about the routes that E is advertising. B in turn uses BGP in external mode to tell another external customer F about the routes that E is advertising.

The routing RIB contains all of these routes. Seperate RIBs are maintained for IPv4 and for IPv6. In the following table you can see the total number of routes in the RIBs for both Unicast & Multicast routes. Routes in the History, Suppressed, Damped, or Pending catatorgies generally have something wrong with them for some reason and are not being used by the router. The number of Total routes should be greater than the number of Active routes. If we receive the same route from two different cusomters then the Total field would be incremented by 2, but the Active field would only be incremented by 1 since we choose one of the routes as "best".

The first column for each router represents the dta for Unicast routes, The second column for each router represents the data for Multicast routes.

IPv4 RIB IPv6 RIB IPv4 Uni iBGP IPv4 Multi iBGP IPv6 Uni iBGP IPv6 Multi iBGP External Peerings

General BGP RIB Statistics - IPv4
Type of Prefixseatnewy32aoawashchicatlakanssaltlosahous
Total203711066319121105971943410302246391123217284102501705810210170291662620224103361709010181
Active112958231112158235112158235112148234112158235112158235112138235112148232112148226
History000000000000000000
Damped000000000000000000
Pending000000000000000000
Suppressed000000000000000000
Total External48191136645520646256129810013162616192884326776511790571661441986
Active External1499652430516463793117523425711306217345367035343246045629883
Suppressed External000000000000000000
Total Internal15552952712666853313178900414626960615665996216626101431626448361450897221667110095
Active Internal979675796910658974227060887276639909801810870819910510289287547776109168143
Suppressed Internal000000000000000000


General BGP RIB Statistics - IPv6
Type of Prefixseatnewy32aoawashchicatlakanssaltlosahous
Total188268310422221162670963232183369309626727321832671312152267343333424078844062672952104
Active994251385138567999371384965921384100118138499976138410018013858758213841001421384
History000000000000000000
Damped000000000000000000
Pending000000000000000000
Suppressed000000000000000000
Total External0126634745012850104901060530152503364011
Active External026622942015605602604029501061010
Suppressed External000000000000000000
Total Internal18826818381875712670961947183369204726727320772671312099267343180924078810422672952093
Active Internal99425111911562599937122896592132810011813589997613801001801090875823231001421374
Suppressed Internal000000000000000000


The next two tables represent the number of IPv4 Unicast & IPv4 Multicast routes in the iBGP Mesh. Each backbone router maintains an internal BGP session to every other backbone router. All of the routes learned from a routers external peers are then advertised to all of he routers internal peers.

The two columns represent the total number of routes advertised in the second column and the total number of routes used in the first column. The numbers can differ, for example, if a router receives a route for which it already had a better route.

iBGP Mesh - IPv4 Unicast
seatnewy32aoawashchicatlakanssaltlosahous
seat-- / --705 / 43053350 / 37931326 / 23421297 / 1306345 / 345391 / 7032166 / 2460216 / 298
newy32aoa536 / 1419-- / --1267 / 37931391 / 23421305 / 1306345 / 345311 / 7031457 / 2460298 / 298
wash536 / 14191779 / 4305-- / --1391 / 23421305 / 1306345 / 345311 / 7031457 / 2460298 / 298
chic718 / 14191258 / 43043370 / 3791-- / --1297 / 1306345 / 345311 / 7031275 / 2460298 / 298
atla536 / 14191779 / 43053792 / 37931391 / 2342-- / --345 / 345311 / 7031457 / 2460298 / 298
kans718 / 14191257 / 43053350 / 37932342 / 23421297 / 1306-- / --333 / 7031275 / 2460298 / 298
salt1107 / 1419705 / 43053350 / 37931326 / 23421297 / 1306345 / 345-- / --2164 / 2458216 / 296
losa816 / 1419705 / 43033348 / 37921318 / 23421306 / 1306345 / 345700 / 703-- / --216 / 298
hous536 / 1419706 / 43043367 / 37922334 / 23421306 / 1306345 / 345311 / 7032011 / 2460-- / --
iBGP Mesh - IPv4 Multicast
seatnewy32aoawashchicatlakanssaltlosahous
seat-- / --155 / 16461020 / 1175382 / 571215 / 21736 / 365243 / 5343453 / 45675 / 83
newy32aoa231 / 652-- / --159 / 1175342 / 571217 / 21736 / 365218 / 5343303 / 45683 / 83
wash231 / 652630 / 1646-- / --342 / 571217 / 21736 / 365218 / 5343303 / 45683 / 83
chic231 / 652447 / 16461131 / 1174-- / --215 / 21736 / 365217 / 5342303 / 45683 / 83
atla231 / 652630 / 16461175 / 1175342 / 571-- / --36 / 365218 / 5343303 / 45683 / 83
kans231 / 652394 / 16461102 / 1175571 / 571215 / 217-- / --5300 / 5343303 / 45683 / 83
salt556 / 652155 / 16461020 / 1175382 / 571215 / 21736 / 36-- / --453 / 45675 / 83
losa556 / 652155 / 16451019 / 1174380 / 571217 / 21736 / 365338 / 5344-- / --75 / 83
hous231 / 652394 / 16451126 / 1174567 / 571217 / 21736 / 365266 / 5344306 / 456-- / --
iBGP Mesh - IPv6 Unicast
seatnewy32aoawashchicatlakanssaltlosahous
seat-- / --
newy32aoa-- / --
wash-- / --
chic-- / --
atla-- / --
kans-- / --
salt-- / --
losa-- / --
hous-- / --
iBGP Mesh - IPv6 Multicast
seatnewy32aoawashchicatlakanssaltlosahous
seat-- / --
newy32aoa-- / --
wash-- / --
chic