When doing PenUltimate Hop Popping (PHP) the top label is popped off, and no label is imposed into the packet.
This means that if there a single label on the packet, after PHP, the packet will be forwarded based on the FIB table, ie routed, if there is two labels on the packet, as you would have in an MPLS VPN environment, then the packet will be forwarded using the LFIB matching on the last remaining label.
Explicit Null, label value 0, can be used so that instead of using popping off the top label, a null label can be added so that QOS information can be retained. When using explicit null, you would have two labels in an MPLS VPN environment.
With XR 4.2.0 the ASR9000 is releasing a new line of hardware models. This amongst others is the RSP440, the next generation RSP with faster switch fabric along with Typhoon based Linecards, the next generation network processor.
The Cisco EPN system incorporates a network architecture designed to consolidate multiples services on a single Multiprotocol Label Switching (MPLS) transport network. This network is designed primarily based on...
Internet security is important with the increasing attacks that are happening every day. Many internet and browsing security solutions exist, but some are not very easy to use or maybe the question is how can I enable them?