From: note@ji-net.com
Date: Tue Jan 25 2005 - 16:10:33 GMT-3
Dear All Expert
I have a some little question but may be so long contents :) If you have free time to read & advise, it make more valuable information for me.
How to apply EBGP load balacing between Multi-VRF MPLS core PE with 6 sub-interface interconnect to PE of IP core network ? The PE of MPLS core is have 2 physical 10GE link connect to PE of IP core & each 1 physical have 3 logical-dot1q subinterface for separate traffic of 3 VRF MPLS VPN service. 2nd physical link is used for enhance redundancy & reliability. Now..2 physical have 6 logical sub interface, 6 subnet /30 ip ptp to opposite PE. 2 logical sub in the different physical has binded to 1 VRF..that mean 6 sub binding to 3 VRF. In the MPLS core use MP-BGP with private AS number & advertise route to IP core network by eBGP, that IP core network have a real public AS number. In the PE of IP core have 6 logical-sub & 2 physical link too but not run MPLS. How I can apply the solution for separate traffic of 3 VRF for monitoring & 2 physical , 2 logical-sub for 1 VRF is load balance (that mean all of 2 physical , 6 logical-sub for 3 VRF)? 6 neighbour peering to ip point to p!
oint?
Sorry I'm not sure about advance BGP concept..In this case it same look like EBGP between PE-CE but in my understand.. BGP can load balance if have more than 1 equal cost of IGP next hop & up to maximum 6 link path.. Can apply by using 6 different peer to point to point next-hop of direct connected logical link? (Can use this concept in both IBGP & EBGP??? Please confirm me? ...may be my under stand is correct or uncorrect, please advise!
In my understand i think EBGP can't applied load-balance with using IGP equal cost next hop peer to directed connect link. Sorry if i mistake and thinking for use ebgp multihop with loopback address for apply load balancing when apply IGP equal cost of direct connected link. because in this case it have 2 physical 10GE & 6 logical sub-int & 3 VRF ( the detail please see below )
At PE of MPLS core with 2 physical 6 logical private AS 65000
sub-interface 1, physical link 1, service 1 binding to VRF MPLS VPN A
sub-interface 2, physical link 1, service 2 binding to VRF MPLS VPN B
sub-interface 3, physical link 1, service 3 binding to VRF MPLS VPN C
sub-interface 4, physical link 2, service 1 binding to VRF MPLS VPN A
sub-interface 5, physical link 2, service 2 binding to VRF MPLS VPN B
sub-interface 6, physical link 2, service 3 binding to VRF MPLS VPN C
have 6 subnet ip ptp /30 each logical sub interface
at PE of IP core is public AS number 9999 not run MPLS (same CE)
sub-interface 1, physical link 1,
sub-interface 2, physical link 1,
sub-interface 3, physical link 1,
sub-interface 4, physical link 2,
sub-interface 5, physical link 2,
sub-interface 6, physical link 2,
If my understand is true..in case apply EBGP multihop with loop back address & add existing 2 IGP equal cost do load balancing? How I can do this ?
Because 1 PE router is binding in 3 VRF MPLS VPN but opposite PE router not have VRF MPLS VPN !!! then... but if we decided for apply peering EBGP multihop with
static route to loopback address via to ptp next-hop with 2 equal cost. What the number of loopback interface is required for handle EBGP load balance for 3 service (1 loopback or 3 loop back need ? ,Where ??? both PE or only some site? if only 1 site ..what is PE must apply?)
In the Cisco... I'm not sure about BGP load balancing concept!! limitation for
BGP process & limitation of maximum-link (maximum-path) for load sharing & limitation for configuring BGP update source loopback interface? Can configure more than 1 update source loopback interface in the diffrent peer but same destination AS number? & In MPLS PE ...Loopback interface need for apply in to the different VRF or not.. If no need ..can see it in global IGP?. & In the VRF can use the diferrent BGP update source with different loopback? Finally... how i can configure & control about incomming & outgoing traffic EGBP load balancing between MPLS core to IP core?
My objective conclude
load balance & redundancy sub-int 1&4 & can monitoring traffic for service 1
load balance & redundancy sub-int 2&5 & can monitoring traffic for service 2
load balance & redundancy sub-int 3&6 & can monitoring traffic for service 3
Please advise & find solution for me :)
Thanks you very very much in advance.
Best Regards,
Ralf.
Backbone Engineering & Services Development Department
Service Provider Solution & Network Engineering Career Paths
Network Service Provider
Email : note@ji-net.com
This archive was generated by hypermail 2.1.4 : Wed Feb 02 2005 - 22:10:25 GMT-3