Cisco Bug: CSCta43300 - Default PE-CE BGP announcements blocked if AS-PATH contains CE AS#
Feb 15, 2018
- Cisco 12000 Series Routers
Known Affected Releases
Symptom: CE does not receive some prefixes from PE running IOS XR. Conditions: This will happen when the prefix originates from the same AS as the CE that we want to advertize it to. CE1 AS X ---- PE1 AS Y ------ PE2 ASY -- CE2 AS X When CE1 is in AS X and advertizes prefix to PE1, it's AS_PATH will originate from AS X. When PE2 wants to advertize that prefix to CE2, it detects that the prefix originates in AS X and does not send it to CE2 as it's also in AS X. This is different from IOS where this check is not implemented.
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Bug Details Include
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