MTU 1560 через MPLS - Cisco - Ответ 5822495

ping mpls pseudowire 172.16.1.1 1996 size 1564
Sending 5, 1564-byte MPLS Echos to 172.16.1.1, 
     timeout is 2 seconds, send interval is 0 msec:
 
Codes: '!' - success, 'Q' - request not sent, '.' - timeout,
  'L' - labeled output interface, 'B' - unlabeled output interface, 
  'D' - DS Map mismatch, 'F' - no FEC mapping, 'f' - FEC mismatch,
  'M' - malformed request, 'm' - unsupported tlvs, 'N' - no label entry, 
  'P' - no rx intf label prot, 'p' - premature termination of LSP, 
  'R' - transit router, 'I' - unknown upstream index,
  'l' - Label switched with FEC change, 'd' - see DDMAP for return code,
  'X' - unknown return code, 'x' - return code 0
 
Type escape sequence to abort.
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/2/4 ms
 Total Time Elapsed 12 ms

ping mpls pseudowire 172.16.1.1 1996 size 1564
% Pseudowire Target Not Supported
zhuk-1#ping mpls pseudowire 172.16.1.22 1996 size 1564
%Total number of MS-PW segments is less than segment number; Adjusting the segment number to 1
Sending 5, 1564-byte MPLS Echos to 172.16.1.22, 
     timeout is 2 seconds, send interval is 0 msec:
 
Codes: '!' - success, 'Q' - request not sent, '.' - timeout,
  'L' - labeled output interface, 'B' - unlabeled output interface, 
  'D' - DS Map mismatch, 'F' - no FEC mapping, 'f' - FEC mismatch,
  'M' - malformed request, 'm' - unsupported tlvs, 'N' - no label entry, 
  'P' - no rx intf label prot, 'p' - premature termination of LSP, 
  'R' - transit router, 'I' - unknown upstream index,
  'X' - unknown return code, 'x' - return code 0
 
Type escape sequence to abort.
.....
Success rate is 0 percent (0/5)
7604#
7604#
7604#
7604#ping mpls pseudowire 172.16.1.22 1996 size 1534
%Total number of MS-PW segments is less than segment number; Adjusting the segment number to 1
Sending 5, 1534-byte MPLS Echos to 172.16.1.22, 
     timeout is 2 seconds, send interval is 0 msec:
 
Codes: '!' - success, 'Q' - request not sent, '.' - timeout,
  'L' - labeled output interface, 'B' - unlabeled output interface, 
  'D' - DS Map mismatch, 'F' - no FEC mapping, 'f' - FEC mismatch,
  'M' - malformed request, 'm' - unsupported tlvs, 'N' - no label entry, 
  'P' - no rx intf label prot, 'p' - premature termination of LSP, 
  'R' - transit router, 'I' - unknown upstream index,
  'X' - unknown return code, 'x' - return code 0
 
Type escape sequence to abort.
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/2/4 ms

%INBAND-3-TOOBIG: An attempt made to send giant packet on Vlan1806 (1626 bytes from 3C3EE2FA, max allowed 1556)