Distance refers to the route reliability of a routing protocol. Each routing protocol is assigned a level of trust from high to low reliability. This level of trust is called the Management Distance. For the routing information from two different routing protocols to one destination, the router first determines which Protocol to trust based on the Management Distance.6. how to configure redistribution?Before route redistribution, you must first:1) decide where to add a new protocol.2) determine
a routing protocol. Each routing protocol is assigned a level of trust from high to low reliability. This level of trust is called the Management Distance. For the routing information from two different routing protocols to one destination, the router first determines which Protocol to trust based on the Management Distance.
6. how to configure redistribution?Before route redistribution, you must first:1) decide where to add a new protocol.2) determine the border router (ASBR) of the autonomous
flood
Debug ip ospf lsa-generation
Debug ip ospf packet
Debug ip ospf retransmission
Debug ip ospf spf
Debug ip ospf tree
Common OSPF faults: Each OSPF area cannot exceed 100 routers, and the entire network cannot exceed 700 routers. The wildcard mask is improperly configured;
VII. Handling BGP faults
The key configuration of BGP (including IBGP and EBGP) is the neighbor relationship, and
will route the redistribution.
The main values are: BGP, EQP, IGRP, ISIS, OSPF, static [IP], connected, and RIP.
Process-id: Indicates the process ID of the OSPF.
Metric: is an optional parameter used to indicate the measure of the redistributed route. The default measure value is 0.
10. Why is it important to identify adjacent routers?
Identifying adjacent routers in a small network is not a major problem. Because when a router fails, other rou
two points, we can write JavaScript code. They are basic things. If you want to despise me, Please despise me! ^. ^
First, define a simple object:
The Code is as follows:
Function objDIV (){This. bgp;This. infop;}
First, we want to bring up a mask layer. I will name it openBackDiv ();
The Code is as follows:
Function openBackDiv (txbp ){Txbp. bgp = document. createElement ("p ");Txbp.
routing protocol is assigned a level of trust from high to low reliability. This level of trust is called the Management Distance. For the routing information from two different routing protocols to one destination, the router first determines which Protocol to trust based on the Management Distance.
9. How to configure redistribution?
Before route redistribution, you must first:
1) decide where to add a new protocol.
2) determine the border router (ASBR) of the autonomous system ).
3) decide w
bgp, eqp, igrp, isis, ospf, static [ip], connected, and rip.◎ Process-id: indicates the OSPF process ID.◎ Metric: it is an optional parameter used to specify the metric value of the redistribution route. The default measurement value is 0.7. Why is it important to determine the adjacent router?Determining the adjacent router in a small network is not a major problem. When a router fails, other routers can converge within an acceptable period of time.
BGP, eqp, IGRP, Isis, OSPF, static [IP], connected, and rip.◎ Process-ID: indicates the OSPF process ID.◎ Metric: it is an optional parameter used to specify the metric value of the redistribution route. The default measurement value is 0.7. Why is it important to determine the adjacent router?Determining the adjacent router in a small network is not a major problem. When a router fails, other routers can converge within an acceptable period of time.
-router) # redistribute protocol [process-id] [metric-value] [metric-type-value] [subnets]
In this command:
◎ Protocol: Specifies the source route protocol for Route redistribution on the vro.
The main values are bgp, eqp, igrp, isis, ospf, static [ip], connected, and rip.
◎ Process-id: indicates the OSPF process ID.
◎ Metric: it is an optional parameter used to specify the metric value of the redistribution route. The default measurement value i
-generationDebug IP OSPF PacketDebug IP OSPF retransmissionDebug IP OSPF SPFDebug IP OSPF treeCommon OSPF failure: OSPF has no more than 100 routers per area, no more than 700 routers in the entire network, and improper wildcard mask configuration;Vii. Handling BGP FailuresThe key configuration for BGP (including IBGP and EBGP) is neighbor relationships, and BGP
routing protocol is assigned a level of trust from high to low reliability. This level of trust is called the Management Distance. For the routing information from two different routing protocols to one destination, the router first determines which Protocol to trust based on the Management Distance.5. How to configure redistribution?Before route redistribution, you must first:1) decide where to add a new protocol.2) determine the border router ASBR of the autonomous system ).3) decide which pr
supporting Cisco NSF can help each other quickly recover from emergencies, minimizing downtime, forwarding groups, and maintaining the stability of the entire network.
Screen. width-333) this. width = screen. width-333 "border = 0>
Figure2:No matter whatProtocolUser data groups are continuously transmitted between peers throughout the recovery process.
Basic Steps for stable restart
AllProtocol). The basic steps are listed below:
• Determine that the Peer Router "supports NSF ".
• Send/receive
ip ospf eventsDebug ip ospf floodDebug ip ospf lsa-generationDebug ip ospf PacketDebug ip ospf retransmissionDebug IP OSPF SPFDebug ip ospf treeCommon OSPF faults: Each OSPF area cannot exceed 100 routers, and the entire network cannot exceed 700 routers. The wildcard mask is improperly configured;
VII. Handling BGP faultsThe key configuration of BGP (including ibgp and ebgp) is the neighbor relationship,
can be reached by restarting the router. On the router restart, when switching from the primary RP to the standby RP, the control panel and the forwarding panel must be isolated from each other so that the forwarding panel can continue to forward data traffic.
Router Protocol Extension
To achieve NSF, Some Cisco routers can use the common Router Protocol-including Border Gateway Protocol BGP), IS-IS, and Open Shortest Path-first OSPF) to implement ne
first. You can also set the BandWidth of the two circuits to be different without changing the COST value. The BandWidth of AB1 is larger than that of AB2. According to the OSPF route generation and discovery rules, AB1 overhead COST) will be lower than AB2, And the router will also use the AB1 circuit first.
An example of changing the control mode is to use a routing filter policy to perform some operations on a route that complies with a certain rule, for example, deny is deny and Permit is a
priority, the router will use the Ab1 circuit first. You can also set the bandwidth of the two circuits to be different without changing the cost value. The bandwidth of Ab1 is larger than that of AB2, which is based on the OSPF route generation and discovery rules, the cost of Ab1 (cost) is lower than that of AB2, And the router also takes the Ab1 circuit first.An example of changing the control mode is to use a routing filter policy to perform some operations on a route that complies with a c
BGP is a path vector routing protocol. Its job is to exchange route information between autonomous systems to find the most effective path for accessing data somewhere on the Internet. How do I select the optimal route? Cisco borderless networks reveal 14 BGP routing principles:
BGP routing principle: premise (the next hop of a route can be reached, synchronizati
Link State update group, which uses the flooding method to update the link status of the entire network.
Link State Acknowledgment
External gateway protocol EGP (external Gateway Protocol)
Summary:
If the source station and the target station are in different autonomous systems, when the datagram is transmitted to the boundary of an autonomous system, a protocol is required to transmit the routing selection information to another autonomous system. This Protocol is the external gatewa
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