[dev] bgp connection between 2 Nodes with IPv6 on global IPs and want to route via global ipv6 address not via ipv6 link local address

[SANDEEP KUMAR]

Hi All,

BGP connection between 2 Nodes with IPv6 on global IPs and want to route
via global ipv6 address not via ipv6 link local address

I have made the bgp connection with global ipv6 address of interface and
advertising the ipv6 route when advertising the route then bgp route added
on Node2 for *2003:4001:5001::/64 via **fe80::6548:ed45:d5d:b578:link
address of Node1  **but i want route with via * *5001:1::9 global ipv6
address (**2003:4001:5001::/64 via **5001:1::9) *
Similarly when we advertise 8001:1::/64 from Node2, *So want help so that I
can achieve the bgp route added on Node1 and Node2 via global ipv6 address
not with ipv6 link address*

    2003:4001:5001::/64
 ------------[Node1]<===========================>[Node2]-------------
8001:1::/64
                                                          ASN:65001

 ASN:65002
                                                          *5001:1::9:global
                                                                        *
*5001:1::10:global*

*fe80::6548:ed45:d5d:b578:link
                                                *
*fe80::2938:1046:591:8387:link*

*[Node1 configuration and interface info]*
[root at localhost centosecmp]#* ifconfig ens5|grep inet*
        inet 10.5.10.9  netmask 255.255.255.0  broadcast 10.5.10.255
        *inet6 5001:1::9  prefixlen 64  scopeid 0x0<global>*
        *inet6 fe80::6548:ed45:d5d:b578  prefixlen 64  scopeid 0x20<link>*

localhost.localdomain(config-router)# *do show running-config*
Building configuration...

Current configuration:
!
frr version 7.2
frr defaults traditional
hostname localhost.localdomain
!








*router bgp 65001 bgp router-id 1.1.1.1 no bgp default
ipv4-unicast neighbor 5001:1::10 remote-as 65002 ! address-family ipv6
unicast  network 2003:4001:5001::/64  neighbor 5001:1::10
activate exit-address-family*
!
line vty
!
end
localhost.localdomain(config-router)#* do show ip bgp ipv6 summary*

IPv6 Unicast Summary:
BGP router identifier 1.1.1.1, local AS number 65001 vrf-id 0
BGP table version 2
RIB entries 3, using 552 bytes of memory
Peers 1, using 20 KiB of memory

Neighbor        V         AS MsgRcvd MsgSent   TblVer  InQ OutQ  Up/Down
State/PfxRcd
*5001:1::10      4      65002       7       7        0    0    0 00:02:13
         1*

Total number of neighbors 1
localhost.localdomain(config-router)# *do show ipv6 route bgp*
Codes: K - kernel route, C - connected, S - static, R - RIPng,
       O - OSPFv3, I - IS-IS, B - BGP, N - NHRP, T - Table,
       v - VNC, V - VNC-Direct, A - Babel, D - SHARP, F - PBR,
       f - OpenFabric,
       > - selected route, * - FIB route, q - queued route, r - rejected
route

*B>* 8001:1::/64 [20/0] via fe80::2938:1046:591:8387, ens5, 00:02:19*


*[Node2 configuration and interface info]*
[root at localhost centosecmp]# *ifconfig ens4|grep inet*
        inet 10.5.10.10  netmask 255.255.255.0  broadcast 10.5.10.255
        *inet6 fe80::2938:1046:591:8387  prefixlen 64  scopeid 0x20<link>*
       * inet6 5001:1::10  prefixlen 64  scopeid 0x0<global>*

localhost.localdomain(config-router)# *do show running-config*
Building configuration...

Current configuration:
!
frr version 7.2
frr defaults traditional
hostname localhost.localdomain
!








*router bgp 65002 bgp router-id 222.222.222.222 no bgp default
ipv4-unicast neighbor 5001:1::9 remote-as 65001 ! address-family ipv6
unicast  network 8001:1::/64  neighbor 5001:1::9
activate exit-address-family*
!
line vty
!
end
localhost.localdomain(config-router)# *do show ip bgp ipv6 summary*

IPv6 Unicast Summary:
BGP router identifier 222.222.222.222, local AS number 65002 vrf-id 0
BGP table version 2
RIB entries 3, using 552 bytes of memory
Peers 1, using 20 KiB of memory

Neighbor        V         AS MsgRcvd MsgSent   TblVer  InQ OutQ  Up/Down
State/PfxRcd
*5001:1::9       4      65001       9       9        0    0    0 00:04:48
         1*

Total number of neighbors 1
localhost.localdomain(config-router)# *do show ipv6 route bgp*
Codes: K - kernel route, C - connected, S - static, R - RIPng,
       O - OSPFv3, I - IS-IS, B - BGP, N - NHRP, T - Table,
       v - VNC, V - VNC-Direct, A - Babel, D - SHARP, F - PBR,
       f - OpenFabric,
       > - selected route, * - FIB route, q - queued route, r - rejected
route

*B>* 2003:4001:5001::/64 [20/0] via fe80::6548:ed45:d5d:b578, ens4,
00:05:08*

Thanks & Regards,
Sandeep Kumar
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