没有密码了，怎么办

oisdoas

我现有一台cisco 交换机2924，我想不起来enable 密码了，想破解，但用路由器的方法破解不了，请大家帮忙 \r\n进到Bootrom \r\n[Bootrom]: ? \r\n? - print this list \r\nh - print this list \r\n@ - boot (load and go) \r\np - print boot params \r\nc - change boot params \r\nr - restart the system \r\nm - set ethernet address \r\nboot device: tffs=drive,removable file name: switch.Z \r\nBoot flags: \r\n0x00 - use ftp to get boot image \r\n0x80 - use tftp to get boot image \r\navailable boot devices: \r\nsw0 tffs