ccnp tshoot exam fees in india
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Offset-list offset list 78
Aggregate-address 192.168.0.0 255.255.0.0 attribute-map test // Associate route-map test works on aggregated routes
(Note that in the actual environment, the situation may be quite different).
!! GW has no other configuration about routing
Ip prefix-list 1 permit 188.8.131.52/24 route-map test per 10
Enables multiple gateways to be used at the same time and automatically detects active gateways.
IP address, and then take the destination IP address to look up in its own routing table. After finding the "best match" entry, the packet is forwarded according to the outbound interface or next hop IP indicated by the routing entry . This is the IP route. ( IP routing ) . And each router maintains a routing table locally.
Redistribute rip subnets tag 1111
<100-500> Community list number (expanded) expanded Add an expanded community-list entry
Neighbor 10.1.13.3 remote-as 345
The route obtained by the BGP speaker from IBGP is not advertised to its IBGP neighbors (avoiding loops and splitting horizontally; except for the case of route RR )
Static Routing Configuration
The process of processing a VLAN frame by a trunk port is as follows:
The configuration of R2 is as follows:
In 802.1D , a non-root switch can generate BPDUs only after receiving the BPDUs sent by the root bridge from the root port . In RSTP , even if the non-root switch does not receive the BPDU from the root switch , it itself sends the BPDU with the " hello interval" period (default 2S ) .
Basic VLAN concept
O E2 184.108.40.206 [110/20] via 10.1.23.2, 00:06:40, Serial0/0
OSPF multicast packets are flooded on the LAN . This is one of the most common applications of the passive-interface feature. Note that different routing protocols operate differently on the passive-interface .
Management VLAN in a Layer 3 switch environment
On this topic, the individual feels that there is no need to study it. It does not make much sense for the research of class-based routing protocols. No matter the actual application or the LAB exam, it is no longer involved, and you are interested in making it yourself.
View command: Show eth 1 summary / show ip route / show ip int brief
Therefore, when the IGP route network into BGP , the MED value inherits the metric value in the IGP protocol.
Neighbor 10.1.23.3 local-as 201 no-prepend
Solution: The way to redistribute static summary route to avoid the sub-optimal routing and other issues
The RID is the largest IP address on the router and tends to be assigned to the loopback address. It can also be set manually by the bgp router-id command. If a path contains an RR attribute, the route generator ID ( originator ) will replace the RID in the optimal path selection process.
*Mar 1 00:11:48.023: ICMP: echo reply rcvd, src 220.127.116.11, dst 192.168.123.3
Server, however, if there is a private DHCP server in the intranet , then it will affect the network, for example, the client is private.
Fa0/22 1 !! vlan10 is trimmed
At this time, R1 is preferred . If you want R2 to be preferred R3 ? R2 is added as follows:
The default native vlan is vlan 1
SW3#sh vtp st
The EBGP route should be better. I saw R5 and went to see R3 :
All devices complete the basic configuration and establish BGP neighbor relationships. The yellow area is the federated member AS .
Neighbor xxxx advertise-map xx exist-map xx
The access layer switch uses a dual link to connect to two aggregation devices to form a Layer 2 environment with physical link redundancy, which solves the problem of single link failure.
Strictly speaking, path control is a very big topic. In the deployment of a large network, it is often necessary to consider the control of the data traffic access path in order to make more rational and scientific use and allocation of network resources. At the same time, it enhances the reliability,ccnp tshoot exam fees in india, redundancy and robustness of the network.
Community value (route), then how to write it? If you directly match no-export , it will match with 18.104.22.168 , so you should use the exact-match keyword. If configured on R3 as follows:
Switchport access vlan 100 interface fast0/24
Each cluster contains a reflector and its client
Re-advertise routes between different OSPF processes
Network without mask is a class declaration, plus the mask is no class declaration
*>i 22.214.171.124 0 100 0 100 i
[Note] If the interface is passive , but at the same time the network interface in the routing process, the interface will not attempt to send updates or establish neighbor relationships, but the network segment where it is located will still be declared into the routing process.
Although the decision to forward the message is implemented by the FIB , the second layer of frame rewriting is done according to the information in the adjacency list. The second layer needs to be rewritten to include the second layer for frame forwarding. head. For Ethernet, it is the new source, destination MAC , and type field. E.g:
inQ number of messages waiting to be processed from this neighbor
Offset-list Acl number in/out offset value interface
ORIGINATOR_ID is a 32-bit value created by a route reflector . This value is the IBGP routerID of the route initiator in the local AS . Note that this initiator is not necessarily the initiator of this route (there is experimental verification below), if the initiator finds its RID In the received route
SW1#show ip dhcp snooping binding
Match ip address 1
Note also that, because the R4 and R5 for the federal EBGP neighbor relationship, so there are also TTL is 1 problems, if they use the loopback interface to establish BGP relationship, it needs to use to neighbor 126.96.36.199 ebgp-multihop 3 command.
// 100: 200 indicates that this is for the AS200 's
Verify the role of the match interface 1
* 192.168.34.3, from 192.168.3.1, 00:09:32 ago, via Serial0/1 Route metric is 20, traffic share count is 1
The ORF feature is very simple, that is, R2 pushes this list to R1 , so that this strategy performs filtering on the R1 side, as shown below.
When the interface is up/down , all dynamically learned MAC address entries will be cleared. The statically configured secure address entries remain.
SW3 's Fa0/3 from Listening to Forwarding takes 20+30S
This is the black hole routing problem, in order to avoid this problem, consider the BE on the BGP routes redistributed into OSPF to solve, but to do so the consequences are unpredictable, after all, BGP routing entries carried is quite enormous. Another solution is to require the routers in the AS to run IBGP and implement IBGP full interconnection. Then the routers in the Transit AS can know the BGP routes, thus solving the problem of routing black holes.