Difference between revisions of "Routing protocols"
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| Serial interfaces - Remember to set the '''bandwidth''' command on serial interfaces to reflect the actual clock rate. (1,544 Mbps or 128 Kbps default) | | Serial interfaces - Remember to set the '''bandwidth''' command on serial interfaces to reflect the actual clock rate. (1,544 Mbps or 128 Kbps default) | ||
| + | |- | ||
| + | |Neighbour establisment || Neighbours are established if hello- and dead-time interval are the same and network type are the same | ||
| + | |- | ||
| + | |rowspan=2|hello interval || default 10 seconds on point-to-point and multi-access networks | ||
| + | |- | ||
| + | |Default 30 seconds on non-broadcast multi-access (NBMA) segments (Frame Relay, X.25, ATM) | ||
| + | |- | ||
| + | |rowspan=2|Dead-time interval || default 40 seconds on point-to-point and multi-access networks | ||
| + | |- | ||
| + | |Default 120 seconds on non-broadcast multi-access (NBMA) segments (Frame Relay, X.25, ATM) | ||
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[[Category:Routing]] | [[Category:Routing]] | ||
Revision as of 09:51, 25 April 2013
| Parameter | OSPF | EIGRP |
|---|---|---|
| Type | Link State | Distance vector |
| Metric | Bandwidth | Bandwidth + delay |
OSPF highlights
| Term | Explanation |
|---|---|
| Router-ID | Priority 1: Set with the router-id command |
| Priority 2: Highest loopback IP address | |
| Priority 3: Highest active interface IP address | |
| DR Designated Router | Priority 1: Highest priority. Set with the ip ospf priority command on the interface |
| Priority 2: Higest Router-ID | |
| BDR Backup Designated Router | Priority 1: Next highest priority. Set with the ip ospf priority command on the interface |
| Priority 2: Next higest Router-ID | |
| Communication | Uses multicast addresses 224.0.0.5 and 224.0.0.6 |
| 224.0.0.5 - Multicast to neighbours | |
| 224.0.0.6 - Multicast to DR and BDR. DR will relay the information to DROthers on 224.0.0.5 | |
| Metric | Uses bandwidth called cost - Default calculated as 108 / bandwidth |
| Metric is the accumulated cost to the destination network | |
| default highest bandwidth is 108 = 100 Mbps. Change with the auto-cost reference-bandwidth command. Remember to change on all routers. | |
| Serial interfaces - Remember to set the bandwidth command on serial interfaces to reflect the actual clock rate. (1,544 Mbps or 128 Kbps default) | |
| Neighbour establisment | Neighbours are established if hello- and dead-time interval are the same and network type are the same |
| hello interval | default 10 seconds on point-to-point and multi-access networks |
| Default 30 seconds on non-broadcast multi-access (NBMA) segments (Frame Relay, X.25, ATM) | |
| Dead-time interval | default 40 seconds on point-to-point and multi-access networks |
| Default 120 seconds on non-broadcast multi-access (NBMA) segments (Frame Relay, X.25, ATM) |