Cisco MGX 8830, Руководство по настройке

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Cisco MGX 8850 (PXM1E/PXM45), Cisco MGX 8950, Cisco MGX 8830, and Cisco MGX 8880 Configuration Guide
Release 5.0.10, OL-3845-01 Rev. B0, August 16, 2004
Chapter 7 Managing Service Class Templates
Managing PXM1E Port SCTs
| SERV TYPE(DEC) | SCALING |PKT DISCARD|
| | CLASS | ENABLE |
+---------------------------------------+
| VSI_SIGNAL( 2)| 2 | DISABLED |
| ATMF_CBR1(256)| 1 | DISABLED |
| ATMF_VBRrt1(257)| 2 | DISABLED |
| ATMF_VBRrt2(258)| 2 | DISABLED |
| ATMF_VBRrt3(259)| 2 | DISABLED |
|ATMF_VBRnrt1(260)| 2 | DISABLED |
|ATMF_VBRnrt2(261)| 2 | DISABLED |
|ATMF_VBRnrt3(262)| 2 | DISABLED |
| ATMF_UBR1(263)| 4 | DISABLED |
| ATMF_UBR2(264)| 4 | DISABLED |
| ATMF_ABR(265)| 3 | DISABLED |
| ATMF_CBR2(266)| 1 | DISABLED |
| ATMF_CBR3(267)| 1 | DISABLED |
| TAG_COS0(512)| 4 | ENABLED |
| TAG_COS1(513)| 4 | ENABLED |
| TAG_COS2(514)| 4 | ENABLED |
| TAG_COS3(515)| 4 | ENABLED |
| TAG_COS4(516)| 4 | ENABLED |
| TAG_COS5(517)| 4 | ENABLED |
| TAG_COS6(518)| 4 | ENABLED |
| TAG_COS7(519)| 4 | ENABLED |
+---------------------------------------+
Table 7-11 describes the SCT VC Threshold parameters shown in the example.
Table 7-11 SCT VC Threshold Parameter Descriptions
Label Description
SERV-TYPE The service type (for example, CBR, VBR, ABR) to which the parameters
(for example, EFCI, CLP_HI, EPD0) in this table apply.
MAX_CELL The VcMax threshold for CLP (0+1) cells in cells.
EFCI Explicit Forward Congestion Indication. The VC EFCI discard threshold in
cells.
CLP_LO /EPD1 Cells Loss Priority Low / Early Packet Discard 1. The low hysteresis
threshold, in cells, at which CLP (1) cells will stop being discarded. If packet
mode is enabled, EPD1 executes.
CLP_HI Cells Loss Priority - High. The high hysteresis threshold, in cells, at which
CLP (1) cells will be discarded. The cells will continue to be discarded until
the CLP_LO threshold is reached.
EPD0 Early Packet Discard 0. The maximum threshold, in cells, for CLP (0+1)
cells.
SCALING CLASS Class of Service Scaling Class. Indicates which of the four Scaling Class
Tables (see
Table 7-12 , 1–4) to use for a connection. Each table is for a
specific service category and has an index of 16 entries. Each index entry
contains a percentage by which to scale traffic on a connection to reduce CoS
buffer congestion. The hardware generates the index and selects the entries
as needed. Each entry is the ratio of the COSB cell count to the COSB
maximum threshold. CoS scaling occurs when the CoSB cell count is
approximately 50% of the CoSB max threshold.