Wireshark-bugs: [Wireshark-bugs] [Bug 6146] Malformed RANAP packets when HandOver procedure on i
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=6146
--- Comment #2 from slawa_m@xxxxxxxxxx 2011-08-02 05:03:10 PDT ---
Hi Anders,
Please see the answers from our developers regarding the issue:
============
The wireshark decode the rrc container to HandoverToUTRANCommand, it is error.
We use radiobearerreconfiguration as the ho message for ue in intra rat ho, not
HandoverToUTRANCommand
============
But I still stay with a problem to decode the HO flow
Please advise,
regards,
Slawa
(In reply to comment #1)
> Hi,
> Can you confirm if the dissection is correct up to a point? As RRC is per
> encoded dissection can go astray if a bit to much is read...
> If in fact SRB-InformationSetup-r5 is encoded then I think the encoding is
> wrong
> or using a different spec. than 3GPP TS 25.331 V9.2.1 (2010-04).
> If you do edit->preferences->protocol->per and enable "Display internal..."
> You can follow the dissection
> SRB-InformationSetup-r5 ::= SEQUENCE {
> -- The default value for rb-Identity is the smallest value not used yet.
> rb-Identity RB-Identity
> OPTIONAL,
> rlc-InfoChoice RLC-InfoChoice-r5,
> rb-MappingInfo RB-MappingInfo-r5
> }
> RLC-InfoChoice-r5 ::= CHOICE {
> rlc-Info RLC-Info-r5,
> same-as-RB RB-Identity
> }
> RLC-Info-r5 ::= SEQUENCE {
> ul-RLC-Mode UL-RLC-Mode
> OPTIONAL,
> dl-RLC-Mode DL-RLC-Mode-r5
> OPTIONAL,
> rlc-OneSidedReEst BOOLEAN
> }
> DL-RLC-Mode-r5 ::= CHOICE {
> dl-AM-RLC-Mode DL-AM-RLC-Mode-r5,
> dl-UM-RLC-Mode DL-UM-RLC-Mode-r5,
> dl-TM-RLC-Mode DL-TM-RLC-Mode
> }
> DL-RLC-Mode-r5 only has 3 "Choises" (0,1,2) so a choice of 3 is wrong.
> Regards
> Anders
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