The combinaison of VPI/VCI can't go beyond 255. Here are the valid ranges for both VPI and VCI:
VPI/VCI Address Ranges
VPI VPI Range VCI Range
1 0 0..255
2 0..1 0..127
4 0..3 0..63
8 0..7 0..31
There was a bug in earlier releases with regards to the support of the configuration of these ranges. You might want to upgrade to CBOS 2.4.2 or later if you have not already.
Harold Ritter
Sr Technical Leader
CCIE 4168 (R&S, SP)
harold@cisco.com
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