Symptom
IOS XE like ASR1k connect to ASR9k BGP DMZ Link Bandwidth weight value inconsistency
Conditions
The issue is that when we rely on the IOS ASR1k to apply the bandwidth community, it is using a value that is much different than the 9k's. This is causing the 1k's to act like they have larger internet circuits than they really do. And so DMZ BW will not operate on correct bandwidth ratio
Workaround
None. No Recommended Work around from Developers
Further Problem Description
If we have three 10Gig providers, and one 20G provider are in port-channel/bundle
If there is no Bandwidth statement under the interface of the A1k edge
If we REMOVE the bandwidth statement from either of the 1k's the following happens on the routing table of coreA and coreB:
Routing entry for 131.216.111.0/24
Known via "bgp 1000", distance 200, metric 0
Tag 101, type internal
Installed Oct 4 05:21:41.302 for 00:00:13
Routing Descriptor Blocks
1.1.1.2, from 10.1.1.9, BGP multi path
Route metric is 0, Wt is 1250000
2.2.2.2, from 10.1.1.9, BGP multi path
Route metric is 0, Wt is 10000
3.3.3.2, from 10.1.1.9, BGP multi path
Route metric is 100, Wt is 20000
4.4.4.2, from 10.1.1.9, BGP multi path
Route metric is 100, Wt is 10000
No advertising protos.
RP/0/RSP0/CPU0:COREA-9010-1-LAB#show cef 131.216.111.0/24 detail | i distribution
Fri Oct 4 05:21:48.375 UTC
Weight distribution:
Level 1 - Load distribution: 0 1 2 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
