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| LDP over RSVP Tunnel MPLS |
Create RSVP LSP between R6 and r7, make sure the LDP signal can across the RSVP LSP
root@Olive# show r6 protocols
rsvp {
interface em2.16;
}
mpls {
label-switched-path r6-r7 {
to 7.7.7.7;
ldp-tunneling;
}
interface em2.16;
interface em2.26;
}
ospf {
traffic-engineering;
area 0.0.0.0 {
interface all;
interface lo0.6 {
passive;
}
}
}
ldp {
interface em2.26;
interface lo0.6;
}
root@Olive# show r7 protocols
rsvp {
interface em2.17;
}
mpls {
label-switched-path r7-r6 {
to 6.6.6.6;
ldp-tunneling;
}
interface em2.17;
interface em2.37;
}
ospf {
traffic-engineering;
area 0.0.0.0 {
interface all;
interface lo0.7 {
passive;
}
}
}
ldp {
interface em2.37;
interface lo0.7;
}
Enable OSPF TE on r1
root@Olive# run show mpls lsp logical-system r6
Ingress LSP: 1 sessions
To From State Rt P ActivePath LSPname
7.7.7.7 6.6.6.6 Up 0 * r6-r7
Total 1 displayed, Up 1, Down 0
Egress LSP: 1 sessions
To From State Rt Style Labelin Labelout LSPname
6.6.6.6 7.7.7.7 Up 0 1 FF 3 - r7-r6
Total 1 displayed, Up 1, Down 0
Transit LSP: 0 sessions
Total 0 displayed, Up 0, Down 0
Ingress LSP: 1 sessions
To From State Rt P ActivePath LSPname
7.7.7.7 6.6.6.6 Up 0 * r6-r7
Total 1 displayed, Up 1, Down 0
Egress LSP: 1 sessions
To From State Rt Style Labelin Labelout LSPname
6.6.6.6 7.7.7.7 Up 0 1 FF 3 - r7-r6
Total 1 displayed, Up 1, Down 0
Transit LSP: 0 sessions
Total 0 displayed, Up 0, Down 0
CE Routing Table
root@Olive# run show route protocol ospf logical-system r4
inet.0: 6 destinations, 6 routes (6 active, 0 holddown, 0 hidden)
+ = Active Route, - = Last Active, * = Both
5.5.5.5/32 *[OSPF/10] 00:23:51, metric 2
> to 192.168.24.2 via em2.24
192.168.35.0/24 *[OSPF/150] 00:23:51, metric 0, tag 3489661028
> to 192.168.24.2 via em2.24
224.0.0.5/32 *[OSPF/10] 00:25:33, metric 1
MultiRecv
inet.0: 6 destinations, 6 routes (6 active, 0 holddown, 0 hidden)
+ = Active Route, - = Last Active, * = Both
5.5.5.5/32 *[OSPF/10] 00:23:51, metric 2
> to 192.168.24.2 via em2.24
192.168.35.0/24 *[OSPF/150] 00:23:51, metric 0, tag 3489661028
> to 192.168.24.2 via em2.24
224.0.0.5/32 *[OSPF/10] 00:25:33, metric 1
MultiRecv
root@Olive# run ping 5.5.5.5 logical-system r4 source 4.4.4.4 rapid
PING 5.5.5.5 (5.5.5.5): 56 data bytes
!!!!!
--- 5.5.5.5 ping statistics ---
5 packets transmitted, 5 packets received, 0% packet loss
round-trip min/avg/max/stddev = 2.000/2.671/4.021/0.845 ms
PING 5.5.5.5 (5.5.5.5): 56 data bytes
!!!!!
--- 5.5.5.5 ping statistics ---
5 packets transmitted, 5 packets received, 0% packet loss
round-trip min/avg/max/stddev = 2.000/2.671/4.021/0.845 ms
Check label from R2 To 5.5.5.5
root@Olive# run show route table vpn-a.inet.0 5.5.5.5/32 logical-system r2 detail | match "Label|Protocol next hop"
Label operation: Push 16, Push 299808(top)
Label TTL action: prop-ttl, prop-ttl(top)
Protocol next hop: 3.3.3.3
VPN Label: 16
Label operation: Push 16, Push 299808(top)
Label TTL action: prop-ttl, prop-ttl(top)
Protocol next hop: 3.3.3.3
VPN Label: 16
root@Olive# run show route table inet.3 3.3.3.3/32 logical-system r2 detail
inet.3: 3 destinations, 3 routes (3 active, 0 holddown, 0 hidden)
3.3.3.3/32 (1 entry, 1 announced)
State:
*LDP Preference: 9
Next hop type: Router
Next-hop reference count: 2
Next hop: 192.168.26.6 via em1.26, selected
Label operation: Push 299808
Label TTL action: prop-ttl
State:
Local AS: 100
Age: 27:19 Metric: 1
Task: LDP
Announcement bits (1): 2-Resolve tree 1
AS path: I
inet.3: 3 destinations, 3 routes (3 active, 0 holddown, 0 hidden)
3.3.3.3/32 (1 entry, 1 announced)
State:
*LDP Preference: 9
Next hop type: Router
Next-hop reference count: 2
Next hop: 192.168.26.6 via em1.26, selected
Label operation: Push 299808
Label TTL action: prop-ttl
State:
Local AS: 100
Age: 27:19 Metric: 1
Task: LDP
Announcement bits (1): 2-Resolve tree 1
AS path: I
The label 16 is VPN label which is generate by R3, and the outside lebel is 299808 that is generated
by R6.
Check the label 299808 on R6.
root@Olive# run show route label 299808 logical-system r6 detail
mpls.0: 7 destinations, 7 routes (7 active, 0 holddown, 0 hidden)
299808 (1 entry, 1 announced)
*LDP Preference: 9
Next hop type: Router, Next hop index: 1033
Next-hop reference count: 2
Next hop: 192.168.16.1 via em2.16 weight 0x1, selected
Label-switched-path r6-r7
Label operation: Swap 299776, Push 299792(top)
Label TTL action: prop-ttl, prop-ttl(top)
State:
Age: 30:51 Metric: 1
Task: LDP
Announcement bits (1): 1-KRT
AS path: I
Prefixes bound to route: 3.3.3.3/32
mpls.0: 7 destinations, 7 routes (7 active, 0 holddown, 0 hidden)
299808 (1 entry, 1 announced)
*LDP Preference: 9
Next hop type: Router, Next hop index: 1033
Next-hop reference count: 2
Next hop: 192.168.16.1 via em2.16 weight 0x1, selected
Label-switched-path r6-r7
Label operation: Swap 299776, Push 299792(top)
Label TTL action: prop-ttl, prop-ttl(top)
State:
Age: 30:51 Metric: 1
Task: LDP
Announcement bits (1): 1-KRT
AS path: I
Prefixes bound to route: 3.3.3.3/32
R6 swap the label into 299776, and this swap label is distributed by R7 RSVP LSP.
And R6 will distribute outside label 299776 for r7, and this one is distributed by R1.
root@Olive# run show route label 299776 logical-system r1 detail
mpls.0: 7 destinations, 7 routes (7 active, 0 holddown, 0 hidden)
299776 (1 entry, 1 announced)
*RSVP Preference: 7/1
Next hop type: Router, Next hop index: 1027
Next-hop reference count: 3
Next hop: 192.168.16.6 via em1.16 weight 0x1, selected
Label-switched-path r7-r6
Label operation: Pop
State:
Local AS: 100
Age: 33:20 Metric: 1
Task: RSVP
Announcement bits (1): 1-KRT
AS path: I
R1 will pop the label 299776 once it receive it. Then forward the label 299776 to R7.
root@Olive# run show route label 299776 logical-system r1 detail
mpls.0: 7 destinations, 7 routes (7 active, 0 holddown, 0 hidden)
299776 (1 entry, 1 announced)
*RSVP Preference: 7/1
Next hop type: Router, Next hop index: 1027
Next-hop reference count: 3
Next hop: 192.168.16.6 via em1.16 weight 0x1, selected
Label-switched-path r7-r6
Label operation: Pop
State:
Local AS: 100
Age: 38:29 Metric: 1
Task: RSVP
Announcement bits (1): 1-KRT
AS path: I
mpls.0: 7 destinations, 7 routes (7 active, 0 holddown, 0 hidden)
299776 (1 entry, 1 announced)
*RSVP Preference: 7/1
Next hop type: Router, Next hop index: 1027
Next-hop reference count: 3
Next hop: 192.168.16.6 via em1.16 weight 0x1, selected
Label-switched-path r7-r6
Label operation: Pop
State:
Local AS: 100
Age: 38:29 Metric: 1
Task: RSVP
Announcement bits (1): 1-KRT
AS path: I
R1 will pop the label 299776 once it receive it. Then forward the label 299776 to R7.
root@Olive# run show route label 299776 logical-system r7 detail
mpls.0: 7 destinations, 7 routes (7 active, 0 holddown, 0 hidden)
299776 (1 entry, 1 announced)
*LDP Preference: 9
Next hop type: Router, Next hop index: 1023
Next-hop reference count: 2
Next hop: 192.168.37.3 via em2.37, selected
Label operation: Pop
State:
Age: 39:14 Metric: 1
Task: LDP
Announcement bits (1): 1-KRT
AS path: I
Prefixes bound to route: 3.3.3.3/32
R7 will pop the label 299776 once it receive, and then forward the only one layer VPN label l6 to R3.
root@Olive# run show route label 16 logical-system r3
mpls.0: 8 destinations, 8 routes (8 active, 0 holddown, 0 hidden)
+ = Active Route, - = Last Active, * = Both
16 *[VPN/0] 00:45:55
to table vpn-a.inet.0, Pop
mpls.0: 8 destinations, 8 routes (8 active, 0 holddown, 0 hidden)
+ = Active Route, - = Last Active, * = Both
16 *[VPN/0] 00:45:55
to table vpn-a.inet.0, Pop
