Hello Porkovan,
>> dmz-link bandwidth is used.is it applicable to equal cost link load balacing in multihome scenarion?
natural use of dmz-link bandwidth is with links of different speeds leading to the same peer AS
if all your links are of equal speeds you don't need it
>> to load balancing in a multihoming scenarion in which i have multiple links from different service providers, all of them are equal bandwidth links.?
you will need two commands
router bgp XXX
maximum-paths N
+
an hidden command in order to install routes coming from different peer AS
bgp bestpath as-path multipath-relax
Note:
if you plan to accept multiple full BGP tables the possible impacts of BGP multipath on memory use of routing table and CEF tables has to be taken in account.
The above setup can be a safe and wise move if you are accepting only a default route or few IP prefixes from each provider.
Impact may vary also depending on platforms you use: running out of CEF tables on a C6500 is dramatic for example.
Hope to help
Giuseppe
