Methods, apparatus and articles of manufacture to manage routing in networks

Abstract

Example methods, apparatus and articles to manage routing in networks are disclosed. A disclosed example method includes identifying a first network element associated with a problematic network element; identifying a first maximum transmission unit of the first network element and a second maximum transmission unit of the problematic network element; determining whether the first and second maximum transmission units are different; and when the first and second maximum transmission units are different, identifying a value of a greater one of the first and second maximum transmission units and configuring the first network element and the problematic network element to each have the identified value.

What is claimed is: 
     
         1 . A method comprising:
 identifying a first network element associated with a problematic network element;   identifying a first maximum transmission unit of the first network element and a second maximum transmission unit of the problematic network element;   determining whether the first and second maximum transmission units are different; and   when the first and second maximum transmission units are different:
 identifying a value of a greater one of the first and second maximum transmission units; and 
 configuring the first network element and the problematic network element to each have the identified value. 
   
     
     
         2 . A method as defined in  claim 1 , wherein identifying the first network element comprises identifying neighboring network elements of the problematic network element. 
     
     
         3 . A method as defined in  claim 1 , wherein the neighboring network elements of the problematic network element are directly connected to the problematic network element. 
     
     
         4 . A method as defined in  claim 1 , further comprising detecting whether a mismatch exists between a first Bellman-Ford constant associated with the first network element and a second Bellman-Ford constant associated with the problematic network element. 
     
     
         5 . A method as defined in  claim 4 , further comprising, when the mismatch exists, configuring the first and second Bellman-Ford constants to match. 
     
     
         6 . A method as defined in  claim 1 , further comprising determining whether an undesired condition exists in connection with a hold time and a hello interval of at least one of the first network element or the problematic network element. 
     
     
         7 . A method as defined in  claim 6 , further comprising, when the undesired condition exists, increasing the hold time to be a multiple of the hello interval. 
     
     
         8 . A tangible machine-readable storage medium comprising instructions that, when executed, cause a machine to perform a operations comprising:
 identifying a first network element associated with a problematic network element;   identifying a first maximum transmission unit of the first network element and a second maximum transmission unit of the problematic network element;   determining whether the first and second maximum transmission units are different; and   when the first and second maximum transmission units are different:
 identifying a value of a greater one of the first and second maximum transmission units; and 
 configuring the first network element and the problematic network element to each have the identified value. 
   
     
     
         9 . A storage medium as defined in  claim 8 , wherein identifying the first network element comprises identifying neighboring network elements of the problematic network element. 
     
     
         10 . A storage medium as defined in  claim 8 , wherein the neighboring network elements of the problematic network element are directly connected to the problematic network element. 
     
     
         11 . A storage medium as defined in  claim 8 , wherein the operations further comprise detecting whether a mismatch exists between a first Bellman-Ford constant associated with the first network element and a second Bellman-Ford constant associated with the problematic network element. 
     
     
         12 . A storage medium as defined in  claim 11 , wherein the operations further comprise, when the mismatch exists, configuring the first and second Bellman-Ford constants to match. 
     
     
         13 . A storage medium as defined in  claim 8 , wherein the operations further comprise determining whether an undesired condition exists in connection with a hold time and a hello interval of at least one of the first network element or the problematic network element. 
     
     
         14 . A storage medium as defined in  claim 13 , wherein the operations further comprise, when the undesired condition exists, increasing the hold time to be a multiple of the hello interval. 
     
     
         15 . An apparatus comprising:
 a memory comprising machine readable instructions; and   a processor to execute the instructions to perform operations comprising:
 identifying a first network element associated with a problematic network element; 
 identifying a first maximum transmission unit of the first network element and a second maximum transmission unit of the problematic network element; 
 determining whether the first and second maximum transmission units are different; and 
 when the first and second maximum transmission units are different:
 identifying a value of a greater one of the first and second maximum transmission units; and 
 configuring the first network element and the problematic network element to each have the identified value. 
 
   
     
     
         16 . An apparatus as defined in  claim 15 , wherein identifying the first network element comprises identifying neighboring network elements of the problematic network element. 
     
     
         17 . An apparatus as defined in  claim 15 , wherein the neighboring network elements of the problematic network element are directly connected to the problematic network element. 
     
     
         18 . An apparatus as defined in  claim 15 , wherein the operations further comprise detecting whether a mismatch exists between a first Bellman-Ford constant associated with the first network element and a second Bellman-Ford constant associated with the problematic network element. 
     
     
         19 . An apparatus as defined in  claim 18 , wherein the operations further comprise, when the mismatch exists, configuring the first and second Bellman-Ford constants to match. 
     
     
         20 . An apparatus medium as defined in  claim 15 , wherein the operations further comprise:
 determining whether an undesired condition exists in connection with a hold time and a hello interval of at least one of the first network element or the problematic network element; and   when the undesired condition exists, increasing the hold time to be a multiple of the hello interval.