Technical Documentation

Configuring CoS Translation Table (NSM Procedure)

On some PICs, the behavior aggregate (BA) translation tables are included for every logical interface (unit) protocol family configured on the logical interface. The proper default translation table is active even if you do not include any explicit translation tables. On M40e, M120, M320, and T Series routers with Enhanced IQ (IQE) PICs, or on any system with IQ2 or Enhanced IQ2 (IQ2E) PICs, you can replace the type-of-service (ToS) bit value on the incoming packet header on a logical interface with a user-defined value. The new ToS value is used for all class-of-service (CoS) processing and is applied before any other CoS or firewall treatment of the packet. The PIC uses the translation-table statement to determine the new ToS bit values. You can configure a physical interface (port) or logical interface (unit) with up to three translation tables. The number of frame relay data-link connection identifiers (DLCIs) (units) that you can configure on each PIC varies based on the number and type of BA classification tables configured on the interfaces.

To configure CoS Translation Table in NSM:

  1. In the NSM navigation tree, select Device Manager > Devices.
  2. Click the Device Tree tab, and then double-click the device to select it.
  3. Click the Configuration tab. In the configuration tree, expand Class of Service.
  4. Select Translation Table.
  5. Add or modify settings as specified in Table 1.
  6. Click one:
    • OK—Saves the changes.
    • Cancel—Cancels the modifications.

Table 1: Translation Table Configuration Details

Task

Your Action

Translate incoming IPv4 DSCP values to new values.

  1. Click To Dscp From Dscp next to Translation Table.
  2. Click Add new entry next to To Dscp From Dscp.
  3. In the Name box, enter the IPv4 DSCP values.
  4. In the Comment box, enter the comment.
  5. Click To Code Point next to to-dscp-from-dscp.
  6. Click Add new entry next to to-dscp-from-dscp.
  7. From the Name list, select the DSCP.
  8. In the Comment box, enter the comment.
  9. Click From Code Points next to to-code-point and perform the following:
    • Add—Adds the selected code points from the Non member list to the Members list.
    • Remove—Removes the selected code points from the Members list.
    • Add All—Adds all the code points from the Non-members list to the Members list.
    • Remove All—Removes all the code points from the Members list.

Translate incoming IPv6 DSCP values to new values.

  1. Click To Dscp Ipv6 From Dscp Ipv6 next to Translation Table.
  2. Click Add new entry next to To Dscp Ipv6 From Dscp Ipv6.
  3. In the Name box, enter the IPv6 DSCP values
  4. In the Comment box, enter the comment.
  5. Click To Code Point next to to-dscp-ipv6-from-dscp-ipv6.
  6. Click Add new entry next to to-dscp-ipv6-from-dscp-ipv6
  7. From the Name list, select the DSCP.
  8. In the Comment box, enter the comment.
  9. Click From Code Points next to to-code-point and perform the following:
    • Add—Adds the selected code points from the Non member list to the Members list.
    • Remove—Removes the selected code points from the Members list.
    • Add All—Adds all the code points from the Non-members list to the Members list.
    • Remove All—Removes all the code points from the Members list.

Translate incoming MPLS EXP values to new values.

  1. Click To Exp From Exp next to Translation Table.
  2. Click Add new entry next to To Exp From Exp.
  3. In the Name box, enter the MPLS EXP values.
  4. In the Comment box, enter the comment.
  5. Click To Code Point next to to-exp-from-exp.
  6. Click Add new entry next to to-exp-from-exp.
  7. From the Name list, select the EXP code point.
  8. In the Comment box, enter the comment.
  9. Click From Code Points next to to-code-point and perform the following:
    • Add—Adds the selected code points from the Non member list to the Members list.
    • Remove—Removes the selected code points from the Members list.
    • Add All—Adds all the code points from the Non-members list to the Members list.
    • Remove All—Removes all the code points from the Members list.

Translate incoming Inet precedence values to new values.

  1. Click To Inet Precedence From Inet Precedence next to Translation Table.
  2. Click Add new entry next to To Inet Precedence From Inet Precedence.
  3. In the Name box, enter the Inet precedence values.
  4. In the Comment box, enter the comment.
  5. Click To Code Point next to to-inet-precedence-from-inet-precedence.
  6. Click Add new entry next to to-inet-precedence-from-inet-precedence.
  7. From the Name list, select the INET precedence code point.
  8. In the Comment box, enter the comment.
  9. Click From Code Points next to to-code-point and perform the following:
    • Add—Adds the selected code points from the Non member list to the Members list.
    • Remove—Removes the selected code points from the Members list.
    • Add All—Adds all the code points from the Non-members list to the Members list.
    • Remove All—Removes all the code points from the Members list.

Published: 2009-08-23