Cisco Cisco Packet Data Interworking Function (PDIF)

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ECS Rules Written for IP Protocol
CSCuy14480 - ECS rules written for IP protocol 132 are not hit
Applicable Products: GGSN, P-GW, SAE-GW
Feature Changes
Previous Behavior: Earlier, SCTP downlink traffic passed through the default bearer instead of dedicated
bearer, when the received packet was matched with the packet filter, which was configured in either of the
following ways:
• Only source port or destination port was configured
• IP Address and port was configured
However, when the packet filter was configured for source and destination IP address, and the packet filter
matched with the received packet, traffic passed through the dedicated bearer.
New Behavior: Now, SCTP downlink traffic pass through the dedicated when the received packet is matched
with the packet filter, which was configured in either of the following ways:
• Source and destination IP address
• Only source port or destination port was configured
• IP Address and port was configured
SPGW Incorrectly Sending UDPv6 Packets
CSCuy78988- SPGW incorrectly sending UDPv6 packets with 0x0 checksum against RFC2460
Applicable Products: GGSN, P-GW, SAEGW, S-GW
Feature Changes
Previous Behavior: Earlier, if the result of the UDPv6 checksum calculation is zero, GW used to send the
same, which effectively disables checksum for that packet. This was not compliant with the RFC2460, which
suggests the checksum value to be set to 0xFFFF if derived calculation is zero.
New Behavior: After the fix, the checksum value is set to 0xFFFF if the result checksum calculation is ZERO
and the compliance is met.
Impact on customer: Packet drops might be seen at peer, which does not support of handling packet with
0xFFFF checksum as suggested by the RFC.
P-GW to Initiate CRA IE in UBReq Immediately
CSCuy95645 - PGW to initiate CRA IE in UBReq immediately
Applicable Products: P-GW, SAEGW
   Release Change Reference, StarOS Release 19
258
P-GW Changes in Release 19
ECS Rules Written for IP Protocol