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Cisco IOS XE Router RTR Security Technical Implementation Guide

Rules, Groups, and Values defined within the XCCDF Benchmark

  • The Cisco PE router must be configured to enforce the split-horizon rule for all pseudowires within a Virtual Private LAN Services (VPLS) bridge domain.

    <VulnDiscussion>A virtual forwarding instance (VFI) must be created on each participating PE router for each customer VLAN using VPLS for car...
    Rule Low Severity
  • SRG-NET-000193-RTR-000002

    <GroupDescription></GroupDescription>
    Group
  • The Cisco PE router providing Virtual Private LAN Services (VPLS) must be configured to have traffic storm control thresholds on CE-facing interfaces.

    &lt;VulnDiscussion&gt;A traffic storm occurs when packets flood a VPLS bridge, creating excessive traffic and degrading network performance. Traffi...
    Rule Medium Severity
  • SRG-NET-000362-RTR-000119

    <GroupDescription></GroupDescription>
    Group
  • The Cisco PE router must be configured to implement Internet Group Management Protocol (IGMP) or Multicast Listener Discovery (MLD) snooping for each Virtual Private LAN Services (VPLS) bridge domain.

    &lt;VulnDiscussion&gt;IGMP snooping provides a way to constrain multicast traffic at Layer 2. By monitoring the IGMP membership reports sent by hos...
    Rule Low Severity
  • SRG-NET-000192-RTR-000002

    <GroupDescription></GroupDescription>
    Group
  • The Cisco PE router must be configured to limit the number of MAC addresses it can learn for each Virtual Private LAN Services (VPLS) bridge domain.

    &lt;VulnDiscussion&gt;VPLS defines an architecture that delivers Ethernet multipoint services over an MPLS network. Customer Layer 2 frames are for...
    Rule Medium Severity
  • SRG-NET-000205-RTR-000007

    <GroupDescription></GroupDescription>
    Group
  • SRG-NET-000362-RTR-000124

    <GroupDescription></GroupDescription>
    Group
  • The Cisco PE router must be configured to block any traffic that is destined to IP core infrastructure.

    &lt;VulnDiscussion&gt;IP/MPLS networks providing VPN and transit services must provide, at the least, the same level of protection against denial o...
    Rule High Severity

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