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<para>as well.</para> |
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<para>as well.</para> |
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</sect2> |
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</sect2> |
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<sect2> |
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<title>Performance</title> |
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<para>My bridge/firewall is a Pentium 90 with one 3Com 3C900B |
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and one 3C905B. The protected side of the network runs at |
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10 mbps half duplex and the connection between the bridge |
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and my router (a Cisco 675) runs at 100 mbps full duplex. |
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With no filtering enabled, I have found that the bridge adds |
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about 0.4 milliseconds of latency to pings from the |
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protected 10 mbps network to the Cisco 675.</para> |
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</sect2> |
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<sect2> |
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<sect2> |
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<title>Other Information</title> |
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<title>Other Information</title> |
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<para>If you have multiple bridges on your network, there cannot be more |
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<para>If you have multiple bridges on your network, there cannot be more |
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than one path between any two workstations. Technically, this means |
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than one path between any two workstations. Technically, this means |
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that there is no support for spanning tree link management.</para> |
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that there is no support for spanning tree link management.</para> |
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<para>A bridge can increase the reaction times in your network by |
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adding a lateny to your ping times, especially for traffic from |
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one segment to another. |
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<example> |
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<title>Increased ping times caused by a bridge</title> |
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<para>A bridge/firewall was tested on a Pentium 90 with one |
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3Com 3C900B and one 3C905B. The protected side of the network |
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ran at 10 mbps half duplex and the connection between the |
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bridge and the router (a Cisco 675) ran at 100 mbps full |
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duplex. With no filtering enabled, the bridge added about |
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0.4 milliseconds of latency to pings from the protected |
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10 mbps network to the Cisco 675 router.</para> |
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</example> |
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</para> |
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</sect2> |
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</sect2> |
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</sect1> |
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</sect1> |