10-25-2018 12:46 PM - edited 03-05-2019 11:00 AM
Hello,
I would like to know if ASR920 may support full BGP table.
According to this document should be possible by the BGP PICS opening full tables for 5 min.
How does the BGP PICS works?
Also looks lik from EVEREST 16 is possible to support FULL BGP?
Necessity is 1/2 ports 1 GBE, maybe additional migration 1 port 10GBE
Thanks a lot for precious help
The BGP PIC feature is an enhancement to the MPLS VPN–BGP Local Convergence feature, which provides a failover mechanism that recalculates the best path and installs the new path in forwarding after a link failure. The feature maintains the local label for 5 minutes to ensure that the traffic uses the backup/alternate path, thus minimizing traffic loss.
The BGP PIC feature improves the LoC time to under a second by calculating a backup/alternate path in advance. When a link failure occurs, the traffic is sent to the backup/alternate path.
When you configure the BGP PIC feature, it will override the functionality of the MPLS VPN--BGP Local Convergence feature. You do not have to remove the protection local-prefixes
Solved! Go to Solution.
10-26-2018 05:38 AM
Hello
@lorenzo limardo wrote:
Hello,
I would like to know if ASR920 may support full BGP table.
According to this document should be possible by the BGP PICS opening full tables for 5 min.
How does the BGP PICS works?
Also looks lik from EVEREST 16 is possible to support FULL BGP?
Necessity is 1/2 ports 1 GBE, maybe additional migration 1 port 10GBE
This router looks like it supports a maximum of 20,000 ipv4/ipv6 routes so given that bgp table is up around 700,000 I guess not.
How BGP PIC Improves Upon the Functionality of MPLS VPN–BGP Local ConvergenceThe BGP PIC feature is an enhancement to the MPLS VPN–BGP Local Convergence feature, which provides a failover mechanism that recalculates the best path and installs the new path in forwarding after a link failure. The feature maintains the local label for 5 minutes to ensure that the traffic uses the backup/alternate path, thus minimizing traffic loss.
The BGP PIC feature improves the LoC time to under a second by calculating a backup/alternate path in advance. When a link failure occurs, the traffic is sent to the backup/alternate path.
When you configure the BGP PIC feature, it will override the functionality of the MPLS VPN--BGP Local Convergence feature. You do not have to remove the protection local-prefixes
command from the configuration.
This is a bgp convergence feature it has nothing to do with the router being able to support a full bgp table.
10-26-2018 05:38 AM
Hello
@lorenzo limardo wrote:
Hello,
I would like to know if ASR920 may support full BGP table.
According to this document should be possible by the BGP PICS opening full tables for 5 min.
How does the BGP PICS works?
Also looks lik from EVEREST 16 is possible to support FULL BGP?
Necessity is 1/2 ports 1 GBE, maybe additional migration 1 port 10GBE
This router looks like it supports a maximum of 20,000 ipv4/ipv6 routes so given that bgp table is up around 700,000 I guess not.
How BGP PIC Improves Upon the Functionality of MPLS VPN–BGP Local ConvergenceThe BGP PIC feature is an enhancement to the MPLS VPN–BGP Local Convergence feature, which provides a failover mechanism that recalculates the best path and installs the new path in forwarding after a link failure. The feature maintains the local label for 5 minutes to ensure that the traffic uses the backup/alternate path, thus minimizing traffic loss.
The BGP PIC feature improves the LoC time to under a second by calculating a backup/alternate path in advance. When a link failure occurs, the traffic is sent to the backup/alternate path.
When you configure the BGP PIC feature, it will override the functionality of the MPLS VPN--BGP Local Convergence feature. You do not have to remove the protection local-prefixes
command from the configuration.
This is a bgp convergence feature it has nothing to do with the router being able to support a full bgp table.
10-30-2018 07:03 AM
thanks a lot really helpful
10-30-2018 07:02 AM
Thanks a lot, really helpful.
04-18-2019 10:44 AM - edited 04-18-2019 10:45 AM
There is a way to get the full routing table into an ASR920. Follow this doc:
I've done it fine, no issues:
gb920-gw-01#show bgp sum
..
..
Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/PfxRcd
xx.xx.xx.xx 4 <asn> 562265 2774 2353823 0 0 1d17h 767075
xx.xx.xx.xx 4 <asn> 562163 2768 2353823 0 0 1d17h 767075
gb920-gw-01#
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