session (Protocols LDP)
Syntax
session session-address {
authentication-algorithm (aes-128-cmac-96 | hmac-sha-1-96 | md5);
authentication-key authentication-key;
authentication-key-chain authentication-key-chain;
downstream-on-demand downstream-on-demand;
(mtu-discovery | no-mtu-discovery);
transport-address transport-address;
}
Hierarchy Level
[edit logical-systems name protocols ldp], [edit logical-systems name routing-instances name protocols ldp], [edit protocols ldp], [edit routing-instances name protocols ldp]
Description
Configure Label Distribution Protocol (LDP) session parameters by specifying the session destination address.
The TCP maximum segment size (TCP-mss) is a non-configurable derivative of maximum transmission unit (MTU). The TCP-mss derived for an LDP and the maximum LDP TCP-mss size are dependent on the MTU size of the interface on which LDP is sending packets.
-
Default TCP-mss for LDP is 1460 bytes.
-
MTU size depends on the IP packet and TCP packet where header size is 40 bytes.
Options
| session-address | Session destination address. |
| authentication-algorithm | Authentication algorithm name.
|
| authentication-key | MD5 authentication key. |
| authentication-key-chain | Key chain name. |
| downstream-on-demand | Configure downstream on demand label distribution mode. |
| mtu-discovery | Enable TCP path MTU discovery. |
| no-mtu-discovery | Disable TCP path MTU discovery. |
| transport-address transport-address | IP address used for TCP sessions to the LDP neighbors that have targeted-LDP adjacencies. You cannot configure this statement for LDP sessions that have discovered adjacencies. The transport-address configuration can be rejected at the time of validation, if there is no interface with the configured IP address. |
Required Privilege Level
routing
Release Information
Statement introduced before Junos OS Release 7.4.
authentication-algorithm statement introduced in
Junos OS Release 7.6.
transport-address option introduced in Junos OS Releasse
19.1R1 for all platforms.