MPLS support Rtp Header Compression ??

[tyagivijay]

Hello,

Does MPLS base links support Rtp Header Compression.

Thanks in advance

Vijay

[Harold Ritter]

The last I heard of this is that it was not supported.

Hope this helps,

[attrgautam]

Where do you want to use RTP compression ?

Gautam

[tyagivijay]

Dear Gautam ,

I want to use the RTP Compression on the MPLS link for Voice traffic.

Vijay

[Sanjeewa Alahakone]

YES, RTPHC is supported in PE/CE link (ip2tag switching), this works well with later 12.3 code.

following configuration is valid for distributed (75xx, dCRTP etc.) and non-distributed 7206

interface Multilink47

bandwidth 128

ip vrf forwarding zzz

ip address

ip tcp header-compression iphc-format

no cdp enable

ppp multilink

ppp multilink fragment-delay 10

ppp multilink interleave

multilink-group 47

ip rtp header-compression iphc-format

interface Serial4/0/1:15

bandwidth 128

no ip address

encapsulation ppp

no cdp enable

ppp multilink

multilink-group 47

Regards

Sanjeewa

[unitech]

How about PE/PE link (tag2tap)?

Did the compressed packet be decompressed auto in the link which didn't enable the rtphc?

[Sanjeewa Alahakone]

In tag2tag we are not dealing with IP, just switching MPLS, In other words your voice packet is now encapsulated in MPLS frame. Core will have no idea whether it is your voice packet or payroll information :)

Regards

Sanjeewa