Release Note для Cisco Cisco Packet Data Gateway (PDG)
P-GW Changes in Release 15.0
▀ P-GW Enhancements for January 31, 2014
▄ Cisco ASR 5x00 Release Change Reference
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3. Addresses configured in the destination context.
New Behavior: After DNS query (query on FQDN that P-GW receives on S6b) is performed, system can get up to
three addresses in pcscf_ip_addr[]. These addresses are encoded in PCO IE. If from here the P-GW does not get any
address in pcscf_ip_addr, then it looks for other options.
three addresses in pcscf_ip_addr[]. These addresses are encoded in PCO IE. If from here the P-GW does not get any
address in pcscf_ip_addr, then it looks for other options.
Priority of addresses is now as follows:
1. Addresses from S6b.
2. Addresses from Radius or configured in APN.
2. Addresses from Radius or configured in APN.
The third case, where address was returned from destination context configuration, has been removed.
CSCuh28006, CSCul24601 - Additional application support with DSCP-802.1p
Marking per Interface
Feature Changes
Internal-QoS
To consolidate L2-level QoS marking across all interfaces, marking IP-DSCP values will be left to individual
applications as applications build IP headers. The DSCP value in IP-header will then be used to derive the L2 QoS
Values by platform (NPU). This derivation will be done in two steps.
applications as applications build IP headers. The DSCP value in IP-header will then be used to derive the L2 QoS
Values by platform (NPU). This derivation will be done in two steps.
1. DSCP will be mapped to an Internal-QoS value using a system-wide table.
2. Internal-QoS will be mapped to actual L2 value (either or both of 802.1p/MPLS) using a per-vrf based table.
2. Internal-QoS will be mapped to actual L2 value (either or both of 802.1p/MPLS) using a per-vrf based table.
Internal-QoS (Internal-Per-Hop-Behavior/IPHB) consists of 5 bits. 3 bits of class-of-service is user-configurable, while
the remaining 2 bits are left for future use to dynamically stamp a drop eligibility based on a rate-monitor.
the remaining 2 bits are left for future use to dynamically stamp a drop eligibility based on a rate-monitor.
The 64 DSCP values will map, each to any of the available 8 COS values of Internal-QoS. The 5 bits of Internal-QoS
will then map to 3+1 bits of 802.1p (the tos and drop-eligibility-indicator) and 3 bits of MPLS-Traffic-Class.
will then map to 3+1 bits of 802.1p (the tos and drop-eligibility-indicator) and 3 bits of MPLS-Traffic-Class.
Command Changes
qos ip-dscp-iphb-mapping
This new command is used to manage Internal QoS (Internal-Per-Hop-Behavior/IPHB). This specific command maps IP
Differentiated Services Code Point (DSCP) values in a packet to internal-QoS class of service marking values.
Differentiated Services Code Point (DSCP) values in a packet to internal-QoS class of service marking values.
configure
qos ip-dscp-iphb-mapping dscp dscp_valueinternal-priority cos class_of_service_value
[ default | no ] qos ip-dscp-iphb-mapping dscp dscp_value
end
qos l2-mapping-table
This new command is used to create or modify an L2 mapping table, which is used to map internal values to L2 values
like 802.1p and MLPS.
like 802.1p and MLPS.
configure