Patrick Denis > Cisco
Cisco
admin
April 2, 2015
DMVPN uses NHRP to dynamically learn the NBMA address of other routers that are a part of the same network. NHRP is a client-server protocol. The DMVPN hub acts as the NHRP server, and the spokes are NHRP clients. Only…
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admin
April 1, 2015
EIGRP The summarisation command is done on the interface you can summarise or prevent some route to be advertise with summarisation . (config-if)#ip summary-address eigrp # ( summary address ) ether all network or the one you want to advertise…
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admin
April 1, 2015
To make equal cost balancing we need minimum 2 routes by looking at the topology metric : show ip eigrp topology ( network address and mask ) or show interface ( interface ) Then you can match the metric parameters…
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admin
April 1, 2015
Reminder : For a path to become an Feasible Successor the FD must be less or equal then the AD x Variance ( 1 by default ) Commands usefull for understanding and managing Path Selection Show ip route Show ip…
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admin
March 31, 2015
Configure the Bri interfaces on each routers R1(config)#interface bri 0 R1(config-if)#no ip address R1(config-if)#isdn switch-type basic-ni R1(config-if)#isdn spid1 100000001000100 R1(config-if)#isdn spid2 100000001100100 R1(config-if)#dialer pool-authorise-user 1 R1(config-if)#encapsulation “ppp” or R1(config-if)#ppp authentication chap R2(config)#interface bri 0 R2(config-if)#no ip address R2(config-if)#isdn switch-type basic-ni R2(config-if)#isdn…
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admin
March 27, 2015
Create a tunnel on both routers (config)#ipv6 unicast-routing ( enable ipv6 routing ) (config)#interface tunnel 0 (config-if)#ipv address ( ipv6 address ) (config-if)#tunnel source ( the source IPv4 address of the local interface ) (config-if)#tunnel destination ( destination IPv4 address of the interface that is…
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admin
March 27, 2015
Understanding PIM PIM is called protocol-independent: regardless of the unicast routing protocols used to populate the unicast routing table, PIM uses this information to perform multicast forwarding instead of maintaining a separate multicast routing table. PIM is defined in RFC…
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admin
March 27, 2015
N WLLA OMNI N = next hop reachability W = weight, bigger is better L = local preference, bigger is better L = locally injected preferred over BGP learned A = AS path length, shorter is better O =…
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admin
March 26, 2015
Reminder OSPF is a Link State routing protocol that calls for the sending of link-state advertisements (LSAs) to all other routers within the same hierarchical area. Information on attached interfaces, metrics used, and other variables is included in OSPF LSAs….
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admin
March 26, 2015
GNS3 Lab click here Route Redistribution Basic When you redistribute one protocol into another, remember that the metrics of each protocol play an important role in redistribution. Each protocol uses different metrics. For example, the Routing Information Protocol (RIP) metric…
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