Random Notes

"match precedence" will match both ipv4 and ipv6. "match ip precedence" will match on only ipv4. http://www.cisco.com/en/US /docs/ios/12_3t/qos/command /reference/qos_m1gt.html #wp1112521

if you want to use udld on copper ports, udld aggressive is your only option. Notes: If you use udld enable global config this will enable udld for fibre ports only If you use udld aggregssive global config command this will enable aggressive udld for fibre ports but won't enable udld on copper ports. To enable udld for copper ports, you manually need to go onto that port and enable using 'udld aggress'.

Brian McGahan to Herbert , slevin , Cisco show details 8/22/07 Reply Also keep in mind that in a regular NSSA the ABR does not originate a default route automatically. With the stub , totally-stubby, and not-so-totally-stubby areas the ABR does automatically originate a default route. This means without additional configuration all devices in the NSSA will lose connectivity to external OSPF routes that are originated in other areas, unless they already have an alternate route to them aside from a route via the ABR.

OSPF Not-So-Stubby Area (NSSA) Downloads OSPF Not-So-Stubby Area (NSSA) Document ID: 6208 Author: Syed Faraz Shamim Contents Introduction Prerequisites Requirements Components Used Conventions What Is a Type 7 LSA? Configuration Tasks Defining a Not-So-Stubby Area Defining an NSSA Totally Stub Area Filtering in NSSA Default Route in NSSA Default Summary Route Default Type 7 NetPro Discussion Forums - Featured Conversations Related Information Introduction The OSPF not-so-stubby area (NSSA) feature is described by RFC 1587 and is first introduced in Cisco IOS ® Software release 11.2. It is a non-proprietary extension of the existing stub area feature that allows the injection of external routes in a limited fashion into the stub area. This document explains how the NSSA feature works. Redistribution into an NSSA area creates a special type of link-state advertisement (LSA) known as type 7, ...

IP Routing How Does OSPF Generate Default Routes? Document ID: 13692 Contents Introduction Before You Begin Conventions Prerequisites Components Used Types of OSPF Areas Normal Areas Stub and Totally Stub Areas NSSAs Related Information Introduction The way that Open Shortest Path First (OSPF) generates and advertises default routes (0.0.0.0) varies depending on the type of area the default route is being injected into. In this document, we cover normal areas, stub/totally stub areas and not-so-stubby areas (NSSAs). Before You Begin Conventions For more information on document conventions, refer to the Cisco Technical Tips Conventions . Prerequisites There are no specific prerequisites for this document. Components Used This document is not restricted to specific software and hardware versions. Types of OSPF Areas Normal Areas: These areas can either be standard areas or transit (backbone) areas. Standard areas are defined as ...