Avaya M770 사용자 설명서
Chapter 10
Managing PNNI Routing
Avaya M770 ATM Switch User’s Guide
147
Here you can see the ATM interface on the switch slot. For every interface you find
the following information:
the following information:
Setting the PNNI interface aggregation token
The aggregation token is significant in multiple peer groups configuration. When
two different outside links to the same peer group has the same derived aggregation
token, the PGL/LGN will aggregate them into one higher level horizontal link.
However, if their derived aggregation tokens are different, two higher level
horizontal links shall be advertised. This may be useful, if the network
administrator has a reason to distinguish between the two links.
two different outside links to the same peer group has the same derived aggregation
token, the PGL/LGN will aggregate them into one higher level horizontal link.
However, if their derived aggregation tokens are different, two higher level
horizontal links shall be advertised. This may be useful, if the network
administrator has a reason to distinguish between the two links.
Note:
A derived aggregation token is calculated from the configured aggregation
token at both ends, using the following formula. If the configured aggregation token
at both ends is the same, the derived aggregation token gets this value. If one
configured aggregation token has a non-zero value and the other one is zero, the
derived aggregation token gets the non-zero value. If both ends have a non-zero
configured aggregation token, and these values are not the same, the derived
aggregation token is zero.
at both ends is the same, the derived aggregation token gets this value. If one
configured aggregation token has a non-zero value and the other one is zero, the
derived aggregation token gets the non-zero value. If both ends have a non-zero
configured aggregation token, and these values are not the same, the derived
aggregation token is zero.
Field
Description
Interface Index
This is the ifIndex for this port.
Pnni Port
This is the port ID as known to PNNI.
Aggr Token
This is the aggregation token for the link if exists. The
Aggregation Token is used by the network administrator to
indicate to the PGL how to aggregate multiple uplinks into
higher-level horizontal links.
VP Cap
Indicates whether the interface is capable of carrying VPCs or
not.
Admin Weight
Indicates the administered weight that is currently assigned for
the link for different Classes of Services: CBR (Constant Bit
Rate), RtVBR (Real Time Variable Bit Rate), NrtVBR (Non-real
time VBR), ABR (Available Bit Rate), and UBR (Unspecified Bit
Rate). The default value is 5040 for all administered weights.
Administered Weights are used during routes calculation.
When different routes to the destination are available, the one
with the lowest cost is taken. The cost of the route is calculated
as the summation of all admin. weight along the path.