3com MSR 20-20 참조 매뉴얼

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By default, no load balancing is configured.
Unlike IGP, BGP has no explicit metric for making load balancing decision. Instead, 
it implements load balancing using route selection rules.
Related commands:
Examples
# In BGP view, set the number of routes participating in BGP load balancing to 2.
<Sysname> system-view
[Sysname] bgp 100
[Sysname-bgp] balance 2 
# In BGP-VPN instance view, set the number of routes participating in BGP load 
balancing to 2 (the VPN has been created).
<Sysname> system-view
[Sysname] bgp 100
[Sysname-bgp] ipv4-family vpn-instance vpn1
[Sysname-bgp-vpn1] balance 2 
bestroute as-path-neglect (BGP/BGP-VPN instance view)
Syntax
bestroute as-path-neglect
undo bestroute as-path-neglect
View
BGP view/BGP-VPN instance view
Parameters
None
Description
Use the bestroute as-path-neglect command to configure the BGP router to 
not evaluate the AS_PATH during best route selection.
Use the undo bestroute as-path-neglect command to configure the BGP 
router to take the AS_PATH as a factor during best route selection.
By default, the router takes AS_PATH as a factor when selecting the best route.
Examples
# In BGP view, ignore AS_PATH in route selection.
<Sysname> system-view
[Sysname] bgp 100
[Sysname-bgp] bestroute as-path-neglect 
# In BGP-VPN instance view, ignore AS_PATH in route selection (the VPN has been 
created).
<Sysname> system-view
[Sysname] bgp 100
[Sysname-bgp] ipv4-family vpn-instance vpn1
[Sysname-bgp-vpn1] bestroute as-path-neglect