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1.74 CISC-RT-000950

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Information

The Cisco Multicast Source Discovery Protocol (MSDP) switch must be configured to use a loopback address as the source address when originating MSDP traffic.

GROUP ID: V-221147
RULE ID: SV-221147r999776

Using a loopback address as the source address offers a multitude of uses for security, access, management, and scalability of MSDP 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 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 its loopback address is used as the source address when sending MSDP packets.

SW1(config)# ip msdp peer x.44.2.34 connect-source lo12 remote-as nn

See Also

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

Item Details

References: CAT|III, CCI|CCI-004931, CSCv7|13.3, Rule-ID|SV-221147r999776_rule, STIG-ID|CISC-RT-000950, Vuln-ID|V-221147

Plugin: Cisco

Control ID: c49f618de174172f2aed77c60120d405ff0e417b0c179cffe8d2762e493f5f8c