The Cisco Multicast Source Discovery Protocol (MSDP) switch must be configured to limit the amount of source-active messages it accepts on a per-peer basis.
Severity | Group ID | Group Title | Version | Rule ID | Date | STIG Version |
|---|---|---|---|---|---|---|
| low | V-221146 | SRG-NET-000018-RTR-000009 | CISC-RT-000940 | SV-221146r999755_rule | 2024-12-20 | 3 |
| Description |
|---|
| To reduce any risk of a denial-of-service (DoS) attack from a rogue or misconfigured MSDP switch, the switch must be configured to limit the number of source-active messages it accepts from each peer. |
| ℹ️ Check |
|---|
| Review the switch configuration to determine if it is configured to limit the amount of source-active messages it accepts on a per-peer basis. ip msdp peer x.1.28.2 connect-source Ethernet2/1 remote-as nn … … … ip msdp sa-limit x.1.28.2 nnn If the switch is not configured to limit the source-active messages it accepts, this is a finding. |
| ✔️ Fix |
|---|
| Configure the switch to limit the amount of source-active messages it accepts from each peer. SW1(config)# ip msdp sa-limit x.1.28.2 nnn SW1(config)# end |