Hi, Varma As you suggested I removed standard community list and route-maps from PE3/PE4. After that  it didn't work properly. PE1/PE2 had their connected and statically mentioned routes only. So I think below  standard community and route-maps are neccessary on PE3 & PE4. Little strange though. PE3-- ! ip extcommunity-list 77 permit rt 1:20 ip bgp-community new-format ! ! route-map community permit 10 match extcommunity 77 set community 65400:1111 ! route-map community permit 20 ! PE4--- ! ip extcommunity-list 77 permit rt 1:30 ip bgp-community new-format ! ! route-map community permit 10 match extcommunity 77 set community 65400:2222 ! route-map community permit 20 ! regards manoj ... View more

Hi, Varma Thank you for your comments. After changing the rd of PE4 to rd 1:20 it worked fine. Now the trafic is routed according to the way I wanted. Still testing the validity of the method and impact on the production network when the rd is changing and other things like redundancy.If I find any other issues ,I will  let you know. Thanks again Best regards Manoj ... View more

Hi, Varma Here I put the how the paths are selected by PE1,PE2 for the network  10.0.2.0/24 . As you can see both PE1,PE2 select PE3 as the next-hop. PE1# PE1#show ip bgp vpnv4 vrf CUSTOMER Load for five secs: 0%/0%; one minute: 0%; five minutes: 0% Time source is NTP, 22:30:29.381 JST Sat Dec 24 2011 BGP table version is 3393, local router ID is PE1-IP Status codes: s suppressed, d damped, h history, * valid, > best, i - internal,               r RIB-failure, S Stale Origin codes: i - IGP, e - EGP, ? - incomplete    Network          Next Hop            Metric LocPrf Weight Path Route Distinguisher: 1:10 (default for vrf CUSTOMER) *>i1.1.1.0/30       PE3-IP             0    110      0 ? * i                      PE3-IP             0    110      0 ? * i2.2.2.0/30        PE4-IP            0    100      0 ? *>i                     PE4-IP            0    100      0 ? *> 3.3.3.0/30       0.0.0.0                  0         32768 ? * i10.0.2.0/24      PE3-IP             0    110      0 65401 ? *>i                      PE3-IP             0    110      0 65401 ? *> 172.16.1.0/24    3.3.3.1                  0         32768 ? PE1# PE1# ------------------------------ PE2# PE2#show ip bgp vpnv4 vrf CUSTOMER Load for five secs: 0%/0%; one minute: 0%; five minutes: 0% Time source is NTP, 22:36:05.399 JST Sat Dec 24 2011 BGP table version is 5021, local router ID is PE2-IP Status codes: s suppressed, d damped, h history, * valid, > best, i - internal,               r RIB-failure, S Stale Origin codes: i - IGP, e - EGP, ? - incomplete    Network          Next Hop            Metric LocPrf Weight Path Route Distinguisher: 1:10 (default for vrf CUSTOMER) *>i1.1.1.0/30       PE3-IP             0    100      0 ? * i                      PE3-IP             0    100      0 ? * i2.2.2.0/30        PE4-IP            0    110      0 ? *>i                     PE4-IP            0    110      0 ? *> 4.4.4.0/30       0.0.0.0                  0         32768 ? * i10.0.2.0/24      PE3-IP             0    100      0 65401 ? *>i                     PE3-IP             0    100      0 65401 ? *> 192.168.1.0      4.4.4.1                  0         32768 ? PE2# ... View more

Hi Varma This is my new configs on all the four PE routers and two route-reflectors. waiting for any ideas from you, where I might I have configured it wrong. thanks. ---------------------- #PE3 ---------------------- ip vrf CUSTOMER rd 1:10 route-target export 1:20 route-target import 1:40 ! address-family vpnv4 neighbor PEER-GROUP send-community both neighbor PEER-GROUP route-map community out neighbor RR1-IP activate neighbor RR2-IP activate exit-address-family ! address-family ipv4 vrf CUSTOMER redistribute connected neighbor 1.1.1.1 remote-as 65401 neighbor 1.1.1.1 activate neighbor 1.1.1.1 next-hop-self neighbor 1.1.1.1 soft-reconfiguration inbound no auto-summary no synchronization exit-address-family ! ip extcommunity-list 77 permit rt 1:20 ip bgp-community new-format ! route-map community permit 10 match extcommunity 77 set community 65400:1111 ! route-map community permit 20 ! ----------------------------- #PE4 ----------------------------- ip vrf CUSTOMER rd 1:10 route-target export 1:30 route-target import 1:40 ! ! address-family vpnv4 neighbor PEER-GROUP send-community both neighbor PEER-GROUP route-map community out neighbor RR1-IP activate neighbor RR2-IP activate exit-address-family ! ! address-family ipv4 vrf CUSTOMER redistribute connected neighbor 2.2.2.1 remote-as 65402 neighbor 2.2.2.1 activate neighbor 2.2.2.1 next-hop-self neighbor 2.2.2.1 soft-reconfiguration inbound no auto-summary no synchronization exit-address-family ! ! ip extcommunity-list 77 permit rt 1:30 ! route-map community permit 10 match extcommunity 77 set community 65400:2222 ! route-map community permit 20 ! -------------------- #PE1 -------------------- ip vrf CUSTOMER rd 1:10 route-target export 1:40 route-target import 1:20 route-target import 1:30 ! ! address-family vpnv4 neighbor PEER-GROUP send-community both neighbor PEER-GROUP route-map community in neighbor RR1-IP activate neighbor RR2-IP activate exit-address-family ! ! address-family ipv4 vrf CUSTOMER redistribute connected redistribute static no auto-summary no synchronization exit-address-family ! ! ip extcommunity-list 77 permit rt 1:20 ! route-map community permit 10 match extcommunity 77 set local-preference 110 ! route-map community permit 20 ! ------------------ #PE2 ------------------ ip vrf CUSTOMER rd 1:10 route-target export 1:40 route-target import 1:20 route-target import 1:30 ! ! address-family vpnv4 neighbor PEER-GROUP send-community both neighbor PEER-GROUP route-map community in neighbor RR1-IP activate neighbor RR2-IP activate exit-address-family ! ! address-family ipv4 vrf CUSTOMER redistribute connected redistribute static no auto-summary no synchronization exit-address-family ! ! ip extcommunity-list 77 permit rt 1:30 ! route-map community permit 10 match extcommunity 77 set local-preference 110 ! route-map community permit 20 ! --------------- RR1  route-reflector1 -------------- ! address-family vpnv4 neighbor PEER-GROUP route-reflector-client neighbor PEER-GROUP send-community both neighbor PE3-IP activate neighbor PE4-IP activate neighbor PE1-IP activate neighbor PE2-IP activate ! ------------- RR2 route-reflector2 ------------- ! address-family vpnv4 neighbor PEER-GROUP route-reflector-client neighbor PEER-GROUP send-community both neighbor PE3-IP activate neighbor PE4-IP activate neighbor PE1-IP activate neighbor PE2-IP activate ! ... View more

Hi Varma, Thanky you very much for your helping. after  ip bgp-community new-format I could overcome that problem. bug still have these problems as mention below #PE1 I couldn't configure this command "ip community list CUSTOMER permit 65400:1111 that is I cant use 65400:1111 format after permit. I can only use rt AS:nn format. so I configured like this ip community-list  77 permit rt 1:20 here 77 is for CUSTOMER which is your standard-list name. I think it is ok. problem is instead of 65400:1111 i used rt1:20 because 65400:1111 is inported as rt 1:20 #PE2 same as PE1 couldn't  configure your command ip community list CUSTOMER permit 65400:2222. instead I used this ip community-list 77 permit rt 1:30 that is because 65400:2222 on PE4 is imported as rt 1:30 on PE2 after configuring as above ,still all the traffic from europe and america will select only one path  that is throuth PE3 please if you have any thoughts where I might wrong , I would be very much appricated. thank you for your valuble time Best regards Manoj ... View more

Hi Varma, I still find some difficulties when configuring. I dont know whether it is IOS version problem or anything else. Here is a example I found when configuring on PE3 your suggest command -> ip extcommunity-list standard CUSTOMER permit rt 1:20 but in my router I only have this ->ip extcommunity-list 77 permit rt 1:20 I cant have a text like "CUSTOMER" for extcommunity lis name. But I think that is OK ,I still could configure the community list. the next problem is more anoying. your suggest command ->      route-map community permit 10      match extcommunity CUSTOMER      set community 65400:1111       I could configure that except for the "CUSTOMER" I used "77" which is my standard community list number. but on the show running    config it will appear as this. !route-map community permit 10 !match extcommunity 77 !set community -8911785 the  65400:1111  will change to a minus number I wonder why is that ? could you please give some advice on that Thank you Manoj ... View more

HI  Varma IN my MPLS network for all PE's we have configured peer group and we have configuration like this on evry PE router. router bgp 65400 ! address-family vpnv4 neighbor "PEER-GROUP" send-community extended neighbor "RR-IP" activate neighbor "RR-IP" activate exit-address-family ! So configuring to send both extended and normal communities is not possibel. Do you have any solution to this. Another thing I am still not understanding the way  to defing vrf . That is  which rd: values should be use on which router? ip vrf xxx rd ???:xxx route-target export ???:xxx route-target import ???:xxx I don't understand clearly which ??? & xxx should use on which PE router on the configuration you provided me. Thank you. Manoj ... View more

Hi Varma, Thank you very much for your advice. >So the problem here is that when Europe or America tries to send traffic to Asia they only exit via one path either London or LA >Gateway Router..Is that Correct ? yes you are correct . Exactly that is the problem I am facing. about your solution how is it going to be configurtion of community in the routers PE1 and PE2. Could you pls give me a sample configuration of  PE1,PE2,PE3,PE4 ?  Is it ok to use same vrf for all PE routers?  will the PE1 and PE 2 have two BGP communitys like  64513:1111 and 64513:2222. thank you ... View more

HI Konstantin, Yes those PE's are under my control. yes there are two Route-reflectors in the MPLS network. Each PE has a IBGP peering with the each Route-reflectors. those IBGP peering works fine and so I haven't showed those configs because show run will include other customers configs also. I want to know is whether the way I am trying to influence routing within the MPLS network is right or wrong. If wrong where I am wrong .If you have any other questions pls feel free to ask. Thank you. ... View more

I have put my question without zip file. pls every body have a look . thanks ... View more

Yes I dont need to have MPLS TE. I was wrong naming the topic ass traffic engineering. Actuall as you can see from my config file I was trying to influence path selection using BGP's attributes. But it is not working for me at the moment and I dont know where I am wrong. What I want is to give a idea about ho should I set bgp attributes within the MPLS network and a example configuration or something. Thank you. ... View more