RE: Frame Relay TCP Header Compression

From: Scott Morris (swm@emanon.com)
Date: Fri Nov 14 2003 - 09:43:51 GMT-3


Your connection seemed to work just fine!

>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]

However, you need to set a password under the VTY ports in order to be
allowed to telnet in! :)

HTH,

 
Scott Morris, CCIE4 (R&S/ISP-Dial/Security/Service Provider) #4713,
CISSP, JNCIS, et al.
IPExpert CCIE Program Manager
IPExpert Sr. Technical Instructor
swm@emanon.com/smorris@ipexpert.net
http://www.ipexpert.net

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
William Chen
Sent: Friday, November 14, 2003 3:44 AM
To: ccielab@groupstudy.com
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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