What command increases the TTL for EBGP?

The command that increases the Time To Live (TTL) for External Border Gateway Protocol (EBGP) sessions is "neighbor neighbor IP ebgp-multihop hop count." This command is specifically designed to adjust the TTL value for EBGP packets.

In EBGP, the default TTL is set to 1, meaning that the router will not communicate with BGP peers beyond the directly connected link. In scenarios where EBGP peers are not on the same local subnet, increasing the TTL becomes necessary so that BGP packets can traverse through intermediate hops without being dropped due to TTL expiry. The hop count defines how many hops the BGP packets are allowed to traverse, effectively allowing the configuration of EBGP over multiple hops.

Understanding the other command options helps clarify their roles within BGP configurations. The command related to the Autonomous System Number (ASN) establishes the BGP process but does not impact TTL settings. The "config t" command is for entering global configuration mode and does not have direct relevance to TTL. The "exit" command is used to leave the current configuration mode but presents no functional changes regarding BGP parameters.

Thus, the correct command for modifying the TTL in EBGP sessions is specifically for multihop support, which enhances reach