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Network Statements, Part 1
In this multi-part series, we’ll examine the effects of Cisco IOS “network” statements for various IP routing protocols. Let’s start with the IGPs (Interior Gateway Protocols). The IGPs for which Cisco...
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Last time, we looked at the basic operation of RIP network statements. Now, let’s look at that topic in more detail. To get RIPv1 running on the Fa0/1, Fa0/2 and Fa0/3 interfaces (but not on Fa0/0), we...
View ArticleNetwork Statements, Part 3
This time, we’ll take a look at the interaction between network statements, subnet masks and automatic route summarization with RIPv2. To get RIPv2 running on the Fa0/1, Fa0/2 and Fa0/3 interfaces,...
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Network Statements, Part 4
Let’s now take a look at some additional techniques that can be used along with network statements to control routing advertisements. Refer to the example topology: Here’s a configuration we could use...
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Network Statements, Part 5
Let’s now take a look at the interplay between network statements and auto-summary with EIGRP. Refer to the example topology: To get EIGRP running on the Fa0/1, Fa0/2 and Fa0/3 interfaces, we’ll use...
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Network Statements, Part 6
Let’s look at some additional options that can be used with EIGRP network statements. Refer to Figure 1: In order to get EIGRP running on all interfaces, we could do this: router eigrp 1 network...
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Network Statements, Part 7
Now let’s examine network statements as used with OSPF. Refer to Figure 1: When using network statements with OSPF, the wildcard masks are required, as are area numbers. To get OSPF Area 0 running on...
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Network Statements, Part 8
Let’s continue with our discussion of techniques involving network statements and OSPF. As we previously discussed, we can get all of the interfaces running OSPF process 1 in Area 0 like this: router...
View ArticleNetwork Statements, Part 9
This time, we’ll look at the behavior of network statements under BGP (Border Gateway Protocol). BGP peering relationships are configured manually using the BGP “neighbor remote-as” command, and the IP...
View ArticleNetwork Statements, Part 10
In this final installment, let’s look at an alternative to BGP network statements, the “redistribute” command. For example, let’s say that our config looks like this: interface loopback 0 ip address...
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