ccnp troubleshooting questions

ccnp troubleshooting questions

Interface fast0/1 routing IP address Each message contains a BGP message header. The header of the BGP message is as follows: Flag: 0x860 Router bgp 12 Management distance problem 43 If the penalty value exceeds the pre-set threshold - the suppression limit: the penalty value reaches this threshold, the route is suppressed, ie not released, until the N half-life, the penalty value is reduced to another threshold: re-use threshold (de-suppression threshold) ), the suppression of the route is lifted. BGP anti-ring is implemented through AS_PATH , and AS_PATH is only changed after the route leaves the AS . Therefore , IBGP does not have EBGP anti-ring capability in the AS . To prevent loops, BGP routers will not be from IBGP neighbors. The learned route is advertised to other IBGP neighbors. The configuration of R3 is as follows: Retaining the NEXT_HOP attribute outside the federation within the federation Ge ge-value //The details are not released. The route originated from the local route (such as the local network or aggregate ), that is, the next hop is 0.0.0.0 ( in the BGP table , the next hop of the route advertised by the current router is 0.0.0.0) Preferred to the nearest route to BGP NEXT_HOP 21 With the above configuration, the analog R3 received from AS200 and AS600 route, in case R3 on filter out from AS600 route, due AS600 route, the AS_PATH trailing end are 600 , so the regular expression can be used: _600 $ , Underscores are used to match spaces. Note,ccnp troubleshooting questions, however, that the as-path access-list is also implicitly deny any by default , so be careful to deny the route from 600AS and leave the other routes.