Hi,
My topology is:
*R1 (192.168.1.1/24 <http://192.168.1.1/24>)*
<------------------>* R2 (192.168.1.2/24 <http://192.168.1.2/24>)*
and *R1 loopback interface* has IP address of *1.1.1.1/32
<http://1.1.1.1/32>*
======================
I have configured VPP's mpls tunnel as follow:
*set interface ip address GigabitEthernet13/0/0 192.168.1.2/24
<http://192.168.1.2/24>*
* mpls tunnel l2-only via 1.1.1.1 ip4-lookup-in-table 0
out-labels 33*
To make it possible to find 1.1.1.1, I inserted a route in ip fib as follow:
* ip route add 1.1.1.1/32 <http://1.1.1.1/32> via 192.168.1.1
GigabitEthernet13/0/0*
What I see in "show mpls tunnel" is as follow:
*[@0] mpls_tunnel0: sw_if_index:4 hw_if_index:4 flags:L2, via:
path-list:[22] locks:1 flags:shared, uPRF-list:20 len:1 itfs:[2, ]
path:[22] pl-index:22 ip4 weight=1 pref=0 recursive: via 192.168.1.1
in fib:0 via-fib:17 via-dpo:[dpo-load-balance:20] Extensions:
path:22 mpls-flags:[no-ip-tll-decr] labels:[[33 pipe ttl:0
exp:0]] forwarding: ethernet [@1]: dpo-load-balance: [proto:ethernet
index:22 buckets:1 uRPF:-1 to:[0:0]] [0] [@0]: dpo-drop ethernet*
======================
In another scenario, I have used following configurations:
* set interface ip address GigabitEthernet13/0/0 192.168.1.2/24
<http://192.168.1.2/24>*
* mpls tunnel l2-only via 1.1.1.1 GigabitEthernet13/0/0
out-labels 33*
What I see in "show mpls tunnel" is as follow:
[
*@0] mpls_tunnel0: sw_if_index:4 hw_if_index:4 flags:L2, via:
path-list:[23] locks:1 flags:shared, uPRF-list:19 len:1 itfs:[2, ]
path:[23] pl-index:23 ip4 weight=1 pref=0 attached-nexthop:
oper-flags:resolved, 1.1.1.1 GigabitEthernet13/0/0 [@0]:
arp-ipv4: via 1.1.1.1 GigabitEthernet13/0/0 Extensions: path:23
mpls-flags:[no-ip-tll-decr] labels:[[33 pipe ttl:0 exp:0]] forwarding:
ethernet [@1]: dpo-load-balance: [proto:ethernet index:23 buckets:1 uRPF:-1
to:[0:0]] [0] [@2]: mpls-label[0]:[33:64:0:eos] [@1]: arp-mpls:
via 1.1.1.1 GigabitEthernet13/0/0*
======================
My Question:
Q: Why does not VPP resolve IP address of 1.1.1.1 in the first
configuration (As the "show mpls tunnel" in first scenario shows, It has
not been resolved)?? I expect to do so since I have added a route for
1.1.1.1 in IP fib.
Thanks
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