Motorola 49901 Software Release Notes - Page 46

Known Software Limitations Part No. T0001-42, Rev C October, 2002 Page 46 of 103 RTP Header Compression Descriptions RTP Header Compression Interoperability Between Cisco and Vanguard Managed Solutions Products over Frame Relay Limitations Incompatible Cisco Features- There are a few Cisco proprietary features that must be disabled in order to ensure proper interoperability over Frame Relay links. The table below identifies the incompatible features. Feature tcp header-compression Frame relay end-to-end keepalives Cisco discovery protocol Comments Vanguard Managed Solutions products do not support tcp header compression over Frame Relay. TCP header compression must be disabled on Cisco Frame Relay interfaces. Encapsulation for keep alive packets is Cisco proprietary and as a result is not supported on links between Vanguard Managed Solutions and Cisco nodes. CDP must be disabled on links connected to non-Cisco devices. Protocols Not Supported - Vanguard Frame Relay links configured for CENCAP encapsulation do not support Transparent Bridging traffic. Configuration - The "Number of Session to be Compressed" parameter must not be configured to a value greater than 255 when the encapsulation is configured to "CENCAP". Cisco products are limited to 8-bit Context Identifiers (CIDs) over Frame Relay. Configuring a Vanguard node for more than 255 sessions will cause it to use 16-bit CIDs. Encrypted (SAM) Tunnel Encrypted (SAM) Tunnel over WAN/LAN with (RTP+UDP/UDP)+IP Header compression is not working for certain size UPD-IP packets where IP packet length is greater than 46 (Version 5.5 and 5.6). Compression works for IP packets where the IP packet length is less than 46. (INDaa01629) Workaround: At present, there is no workaround.