Default-Originate

Scenario to verify BGP peer-group address-family ipv6-unicast default-originate inheritance. When default-originate is configured on a peer-group under address-family ipv6-unicast, neighbors that are members of that group receive a default IPv6 route (::/0).

Test iBGP IPv6 - Peer-group default-originate sends default route

Description

Test that default-originate configured on a peer-group under address-family ipv6-unicast is inherited by its members. DUT1 should receive the default IPv6 route ::/0 from DUT0 through the peer-group configuration.

Scenario

Step 1: Set the following configuration in DUT0 :

set interfaces ethernet eth0 address '2001:db8:1::100/64'
set protocols bgp 20 neighbor peer address-family ipv6-unicast activate
set protocols bgp 20 neighbor peer peer-group MYGROUP
set protocols bgp 20 neighbor peer remote-address '2001:db8:1::200'
set protocols bgp 20 neighbor peer remote-as 20
set protocols bgp 20 parameters router-id 1.1.1.100
set protocols bgp 20 peer-group MYGROUP address-family ipv6-unicast default-originate
set protocols bgp 20 peer-group MYGROUP remote-as 20
set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'

Step 2: Set the following configuration in DUT1 :

set interfaces ethernet eth0 address '2001:db8:1::200/64'
set protocols bgp 20 neighbor peer address-family ipv6-unicast activate
set protocols bgp 20 neighbor peer remote-address '2001:db8:1::100'
set protocols bgp 20 neighbor peer remote-as 20
set protocols bgp 20 parameters router-id 1.1.1.200
set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'

Attention

Verify iBGP session establishes.

Step 3: Run command protocols bgp show ipv6 summary at DUT0 and check if output matches the following regular expressions:

2001:db8:1::200.*Established
Show output
IPv6 Unicast Summary:
BGP router identifier 1.1.1.100, local AS number 20 VRF default vrf-id 0
BGP table version 0
RIB entries 0, using 0 bytes of memory
Peers 1, using 24 KiB of memory
Peer groups 1, using 64 bytes of memory

Neighbor        LocalAddr       V         AS   MsgRcvd   MsgSent   TblVer  InQ OutQ  Up/Down        State   PfxRcd   PfxSnt Desc
2001:db8:1::200 0.0.0.0         4         20         5         3        0    0    0 00:00:00  Established        0        0 FRRouting/10.4.1

Total number of neighbors 1

Attention

Verify DUT1 receives default IPv6 route ::/0 from DUT0.

Step 4: Run command protocols bgp show ipv6 ::/0 at DUT1 and check if output contains the following tokens:

2001:db8:1::100 from 2001:db8:1::100 (1.1.1.100)
Show output
BGP routing table entry for ::/0, version 1
Paths: (1 available, best #1, table default)
  Not advertised to any peer
  Local
    2001:db8:1::100 from 2001:db8:1::100 (1.1.1.100)
    (fe80::dcad:beff:feef:6c00) (used)
      Origin IGP, metric 0, localpref 100, valid, internal, best (First path received)
      Last update: Thu Mar  5 15:53:34 2026

Test iBGP IPv6 - Peer-group default-originate with route-map

Description

Test that default-originate with route-map configured on a peer-group under address-family ipv6-unicast conditionally advertises a default IPv6 route (::/0). DUT0 originates default route only when route 2001:db8:10::/64 exists (matched by route-map).

Scenario

Step 1: Set the following configuration in DUT0 :

set interfaces dummy dum0 address '2001:db8:10::1/64'
set interfaces ethernet eth0 address '2001:db8:1::100/64'
set protocols bgp 20 address-family ipv6-unicast redistribute connected
set protocols bgp 20 neighbor peer address-family ipv6-unicast activate
set protocols bgp 20 neighbor peer peer-group MYGROUP
set protocols bgp 20 neighbor peer remote-address '2001:db8:1::200'
set protocols bgp 20 neighbor peer remote-as 20
set protocols bgp 20 parameters router-id 1.1.1.100
set protocols bgp 20 peer-group MYGROUP address-family ipv6-unicast default-originate route-map DEFAULT-MAP
set protocols bgp 20 peer-group MYGROUP remote-as 20
set protocols ipv6 prefix-list TRACK rule 10 action permit
set protocols ipv6 prefix-list TRACK rule 10 prefix '2001:db8:10::/64'
set protocols route-map DEFAULT-MAP rule 10 action permit
set protocols route-map DEFAULT-MAP rule 10 match ipv6 address prefix-list TRACK
set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'

Step 2: Set the following configuration in DUT1 :

set interfaces ethernet eth0 address '2001:db8:1::200/64'
set protocols bgp 20 neighbor peer address-family ipv6-unicast activate
set protocols bgp 20 neighbor peer remote-address '2001:db8:1::100'
set protocols bgp 20 neighbor peer remote-as 20
set protocols bgp 20 parameters router-id 1.1.1.200
set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'

Attention

Verify iBGP session establishes.

Step 3: Run command protocols bgp show ipv6 summary at DUT0 and check if output matches the following regular expressions:

2001:db8:1::200.*Established
Show output
IPv6 Unicast Summary:
BGP router identifier 1.1.1.100, local AS number 20 VRF default vrf-id 0
BGP table version 2
RIB entries 3, using 384 bytes of memory
Peers 1, using 24 KiB of memory
Peer groups 1, using 64 bytes of memory

Neighbor        LocalAddr       V         AS   MsgRcvd   MsgSent   TblVer  InQ OutQ  Up/Down        State   PfxRcd   PfxSnt Desc
2001:db8:1::200 0.0.0.0         4         20         2         2        0    0    0 00:00:00  Established        0        0 FRRouting/10.4.1

Total number of neighbors 1

Attention

Verify DUT1 receives default IPv6 route ::/0 from DUT0.

Step 4: Run command protocols bgp show ipv6 ::/0 at DUT1 and check if output contains the following tokens:

2001:db8:1::100 from 2001:db8:1::100 (1.1.1.100)
Show output
BGP routing table entry for ::/0, version 1
Paths: (1 available, best #1, table default)
  Not advertised to any peer
  Local
    2001:db8:1::100 from 2001:db8:1::100 (1.1.1.100)
    (fe80::dcad:beff:feef:6c00) (used)
      Origin IGP, metric 0, localpref 100, valid, internal, best (First path received)
      Last update: Thu Mar  5 15:53:48 2026