ccnp troubleshooting guide

ccnp troubleshooting guide

<0-4294967295> 32-bit tag value As a result, all three switches exchange VTP packets to inform them that there is a VLAN for accessing users . For VLANs that do not have users locally , they will be automatically trimmed. Let's take a look: The configuration of SW2 is as follows: This path. And because there is no RIP route in the routing table , the natural RIP re-release to OSPF fails, and even worse, R4 about Timeout Configure abort timeout interval Metric Pointer to the target: The pointer does not point to the router's direct connection to the destination network or to another router address in the directly connected network , or to the local interface of the link. A router that is closer to the target network is called a next hop router. Switch(config-if)# ip address 192.168.255.254 255.255.255.0 Let 's take a look at the features of BackboneFast : Neighbor The use of one-arm routing can solve the problem of data exchange between VLANs , but there are also various drawbacks, such as the interface of the router,ccnp troubleshooting guide, the load is too large, and the traffic needs to enter and exit the interface or link twice, causing the load on the trunk link to be too heavy. And the scalability is particularly poor. R3 Block all ARP requests or on the DAI untrust interface (note the separation from DHCP snooping 's untrust interface) Sw1(config-if-range)#channel-group 1 mode desirable Sw1(config-if-range)#no shutdown Make a summary on R3 , use aggregate-address summary-only as-set , note that the as-set keyword is added. *Mar 1 00:11:48.023: ICMP: echo reply rcvd, src 2.2.2.2, dst 192.168.123.3 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, 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.