Vrf-Lite Support For Ospfv2; Ospfv3 Timers Update - Cisco NCS 5500 Series Configuration Manuals

Implementing OSPF
The OSPFv3 MIB implementation is based on the IETF draft Management Information Base for OSPFv3 (
draft-ietf-ospf-ospfv3-mib-8). Users need to update the NMS application to pick up the new MIB when
upgraded to RFC 5643.
Multiple OSPFv3 Instances
SNMPv3 supports "contexts" that can be used to implement MIB views on multiple OSPFv3 instances, in the
same system.

VRF-lite Support for OSPFv2

VRF-lite capability is enabled for OSPF version 2 (OSPFv2). VRF-lite is the virtual routing and forwarding
(VRF) deployment without the BGP/MPLS based backbone. In VRF-lite, individual provider edge (PE)
routers are directly connected using VRF interfaces. To enable VRF-lite in OSPFv2, configure the capability
vrf-lite command in VRF configuration mode. When VRF-lite is configured, the DN bit processing and the
automatic Area Border Router (ABR) status setting are disabled.

OSPFv3 Timers Update

The Open Shortest Path First version 3 (OSPFv3) timers link-state advertisements (LSAs) and shortest path
first (SPF) throttle default values are updated to:
• timers throttle lsa all—start-interval: 50 milliseconds and hold-interval: 200 milliseconds
• timers throttle spf —spf-start: 50 milliseconds, spf-hold: 200 milliseconds, spf-max-wait: 5000
milliseconds
Routing Configuration Guide for Cisco NCS 5500 Series Routers, IOS XR Release 6.3.x
VRF-lite Support for OSPFv2
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