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=?big5?b?pl7C0KFH?= RE: Frame Relay TCP Header Compression posted 11/14/2003
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You may find that the RouterB's dlci also have the "nocompress" keyword entered. But I am sure that I don't enter this keyword. I think the compression between 2 DLCI will be neogotiated. Any idea?

-- William Chen

> 
> 1H%s*L: "Ozgur Guler (Garanti Teknoloji)" <OzgurG@xxxxxxxxxxxxxx>
> $i4A: 2003/11/14 ,P4A$- $U$H 04:48:52 GMT+08:00
> &,%s*L: "William Chen" <kwchen@xxxxxxxxxxxxxx>
> %D&.: RE: Frame Relay TCP Header Compression
> 
> 
> 
> did you disable it on the other end of that dlci also?
> Ozgur
> -----Original Message-----
> From: nobody@xxxxxxxxxxxxxx [mailto:nobody@xxxxxxxxxxxxxx]On Behalf Of William Chen
> Sent: Friday, November 14, 2003 10:44 AM
> To: ccielab@xxxxxxxxxxxxxx
> Subject: Frame Relay TCP Header Compression
> 
> 
> Dear group,
> 
>    For frame-relay tcp header compression, if I turn on the header compression
> on the an interface, all the PVC will inherit the compression. The command
> "frame-relay map ip addr dlci nocompress" is suppose to disable this inheritance.
> Therefore, I try if one end of Frame Relay allow this inheritance, but another
> end disable the inheritance, then TCP connection will be failed.
> 
> RouterA:
> interface Serial0/0
>  ip address 192.168.1.1 255.255.255.0
>  encapsulation frame-relay
>  frame-relay map ip 192.168.1.2 204 broadcast nocompress
>  frame-relay ip tcp header-compression
> !
> RouterA#sh frame-relay map
> Serial0/0 (up): ip 192.168.1.2 dlci 204(0xCC,0x30C0), static,
>               broadcast,
>               CISCO, status defined, active
> 
> RouterB:
> interface Serial0/0
>  ip address 192.168.1.2 255.255.255.0
>  encapsulation frame-relay
>  frame-relay map ip 192.168.1.1 402 broadcast nocompress
>  frame-relay ip tcp header-compression
> !
> RouterB#sh frame map
> Serial0/0 (up): ip 192.168.1.1 dlci 402(0x192,0x6420), static,
>               broadcast,
>               CISCO, status defined, active
>               TCP/IP Header Compression (inherited), connections: 256
> 
> RouterB#p 192.168.1.1
> 
> 
> Type escape sequence to abort.
> Sending 5, 100-byte ICMP Echos to 192.168.1.1, timeout is 2 seconds:
> !!!!!
> Success rate is 100 percent (5/5), round-trip min/avg/max = 56/57/60 ms
> RouterB#telnet 192.168.1.1
> Trying 192.168.1.1 ... Open
> 
> 
> Password required, but none set
> 
> [Connection to 192.168.1.1 closed by foreign host]
> 
> Anyone know why?
> 
> Best Regard,
> William Chen
> 
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