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1.40 CISC-RT-000590

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Information

The Cisco MPLS switch must be configured to use its loopback address as the source address for LDP peering sessions.

GROUP ID: V-221113
RULE ID: SV-221113r999770

Using a loopback address as the source address offers a multitude of uses for security, access, management, and scalability of backbone switches. It is easier to construct appropriate ingress filters for switch management plane traffic destined to the network management subnet since the source addresses will be from the range used for loopback interfaces instead of from a larger range of addresses used for physical interfaces. Log information recorded by authentication and syslog servers will record the switch's loopback address instead of the numerous physical interface addresses.

Solution

Configure the switch to use their loopback address as the source address for LDP peering sessions. As noted in the check content, the default behavior is to use its loopback address.

SW1(config)# mpls ldp configuration
SW1(config-ldp)# router-id lo0

See Also

https://workbench.cisecurity.org/benchmarks/22581

Item Details

References: CAT|III, CCI|CCI-004931, CSCv7|13.3, Rule-ID|SV-221113r999770_rule, STIG-ID|CISC-RT-000590, Vuln-ID|V-221113

Plugin: Cisco

Control ID: bc4b52905bee0f51ec9af91160e5bf8abd0cf91f8f8fca7d05a19977fc282ab3