سؤال في MPLS طرح علي في مقابلة مع شركة JUNIPER

[anonym501]

السلام عليكم
أرجو المساعدة منكم يا إخوان في الإجابة على هذا السؤال

what's the difference between "MPLS session" and "MPLS neighborship

[a7medOzO]

you can get the answer here in this link :
https://www.juniper.net/techpubs/software/junos-security/junos-security96/junos-security-swconfig-interfaces-and-routing/signal-verification-section.html#verify-ldp-neighbors-section

Verifying LDP Neighbors

Purpose



Verify that each router shows the appropriate LDP neighbors—for example, that Router R5 has both Router R6 and Router R7 as LDP neighbors.

Action



From the CLI, enter the show ldp neighbor command.

Sample Output


user@r5> show ldp neighbor
Address Interface Label space ID Hold time
10.0.8.5 ge-0/0/0.0 10.0.9.6:0 14
10.0.8.10 ge-0/0/1.0 10.0.9.7:0 11


Meaning



The output shows the IP addresses of the neighboring interfaces along with the interface through which the neighbor adjacency is established. Verify the following information:

Each interface on which LDP is enabled is listed.
Each neighboring LDP interface address is listed with the appropriate corresponding LDP interface.
Under Label space ID, the appropriate loopback address for each neighbor appears.
Related Topics



For a complete description of show ldp neighbor output, see the JUNOS Routing Protocols and Policies Command Reference.

Verifying LDP Sessions

Purpose



Verify that a TCP-based LDP session has been established between all LDP neighbors. Also, verify that the modified keepalive value is active.

Action



From the CLI, enter the show ldp session detail command.

Sample Output


user@r5> show ldp session detail
Address: 10.0.9.7, State: Operational, Connection: Open, Hold time: 28
Session ID: 10.0.3.5:0--10.0.9.7:0
Next keepalive in 3 seconds
Passive, Maximum PDU: 4096, Hold time: 30, Neighbor count: 1
Keepalive interval: 10, Connect retry interval: 1
Local - Restart: disabled, Helper mode: enabled
Remote - Restart: disabled, Helper mode: disabled
Local maximum recovery time: 240000 msec
Next-hop addresses received:
10.0.8.10
10.0.2.17


Meaning



The output shows the detailed information, including session IDs, keepalive interval, and next-hop addresses, for each established LDP session. Verify the following information:

Each LDP neighbor address has an entry, listed by loopback address.
The state for each session is Operational, and the connection for each session is Open. A state of Nonexistent or a connection of Closed indicates a problem with one of the following:
LDP configuration
Passage of traffic between the two devices
Physical link between the two routers
For Keepalive interval, the appropriate value, 10, appears.

[anonym501]

جزاك الله خيرا