Enabling Atm Cell Mode; Enabling Ip Options Filtering; Packet Tagging Overview - Juniper JUNOSE SOFTWARE FOR E SERIES 11.3.X - POLICY MANAGEMENT CONFIGURATION GUIDE 2010-10-04 Configuration Manual

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Enabling ATM Cell Mode

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Enabling IP Options Filtering

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Packet Tagging Overview

Copyright © 2010, Juniper Networks, Inc.
Modules on E120 and E320 routers support marking of the ATM CLP bit on frame-based
interfaces. In this case, every cell of the segmented frame leaves the router with the
same CLP value.
Modules on ERX7xx models, ERX14xx models, and the ERX310 Broadband Services
Router support classifying and marking of the ATM CLP bit for individual ATM cells
(AAL0 encapsulation), but not for frame-based interfaces (AAL5 encapsulation).
mark-clp
When you configure a rate limit profile to account for ATM cell tax, the forwarding code
calculates this information to determine the size of a frame instead of using only the
frame size.
Issue the atm-cell-mode command to account for the ATM cell tax in statistics and
rate calculations:
host1(config-policy-list)#atm-cell-mode
Use the show rate-limit-profile command to display the state of the mode.
Monitoring Policy Management Overview on page 173
atm-cell-mode
show rate-limit-profile
You can filter packets with IP options on an interface:
Issue the ip filter-options all command.
host1(config-if)#ip filter-options all
When a packet arrives on an interface, the router checks to see if the packet contains IP
options. If it does and if IP options filtering is enabled, that packet is dropped. IP options
filtering is disabled by default.
Classifier Groups and Policy Rules Overview on page 27
ip filter-options all
You can use the traffic-class rule in policies to tag a packet flow so that the QoS
application can provide traffic-class queuing. Policies can perform both in-band and
out-of-band packet tagging:
Chapter 4: Creating Classifier Groups and Policy Rules
35