cggsnQosUmtsDiffServPhbgroup

This object denotes the PHB which is mapped to the traffic
class given by cggsnQosUmtsTrafficClass.
              
DS architecture is based on number of functional elements,
one of which is PHB.  PHBs specify queuing, queue management 
and scheduling characteristics that allow a means of 
allocating buffer and bandwidth resources at each node among 
the competing traffic streams.
              
The various DS PHBs include:
        signalling - signallingClass(1)
        The signalling class PHB is only used for the UMTS 
        signalling messages. This DS PHB does not apply to 
        any other IP data packets.
              
        expedited forwarding - efClass(2)
        The expedited forwarding PHB is used for providing 
        a low loss, low latency, low jitter, assured 
        bandwidth, end-to-end service through the DS domains. 
        Such a service appears to the endpoints like a 
        point-to-point connection, or a virtual leased line.
              
        assured forwarding - afClass(3-6)
        The assured forwarding PHB provides a means for a 
        provider DS domain to offer different levels of 
        delivery assurances for packets received from a 
        customer DS domain. Four assured forwarding classes: 
        afClass1, afClass2, afClass3 and afClass4 are defined,
        where each AF class is in each DS node allocated a
        certain amouont of forwarding resoources(buffer space
        and bandwidth). IP packets are assigned into one or 
        more of these classes, according to the subscribed 
        service.  Within each class the packets are marked 
        by a mobile subscriber, or by the provider DS domain,
        with one of the three possible drop precedence 
        values. In case of congestion, the drop precedence 
        of a packet determines the relative importance of a 
        packet within the class. Packets in one class are 
        forwarded independently of the packets in another 
        class.
              
        best effort - bestEffort(7)
        This is the default PHB.  The packets of this 
        aggregate are forwarded on an output link whenever
        the link is not required to satisfy any other PHB.

MIB

CISCO-GGSN-QOS-MIB

OID

.1.3.6.1.4.1.9.9.241.1.3.1.1.2

Type

column

Access

readwrite

Status

current

Parent

cggsnQosTrafficClassPhbEntry

Table

cggsnQosTrafficClassPhbTable

Siblings

2