R2511-HP MSR Router Series Layer 3 - IP Routing Configuration Guide(V5)

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{ T h e o u t p u t s h ow s t w o va l i d ro u t e s t o d e s t i n a t io n 9.1.1. 0 / 24 : t h e ro u t e wi t h n e x t h o p 3 .1.1.1 i s
marked with a greater-than sign (>), indicating it is the best route; the route with next hop 3.1.2.1
is marked with only an asterisk (*), indicating it is a valid route, but not the best.
{ By using the display ip routing-table command, you can find only one route to 9.1.1.0/24 with
next hop 3.1.1.1 and outbound interface S2/0.
3. Configure load balancing:
Because Router A has two routes to reach AS 65009, configuring load balancing over the two
BGP routes on Router A can improve link utilization.
# Configure Router A.
[RouterA] bgp 65008
[RouterA-bgp] balance 2
[RouterA-bgp] quit
Verifying the configuration
# Display the BGP routing table on Router A.
[RouterA] display bgp routing-table
Total Number of Routes: 3
BGP Local router ID is 1.1.1.1
Status codes: * - valid, ^ - VPNv4 best, > - best, d - damped,
h - history, i - internal, s - suppressed, S - Stale
Origin : i - IGP, e - EGP, ? - incomplete
Network NextHop MED LocPrf PrefVal Path/Ogn
*> 8.1.1.0/24 0.0.0.0 0 0 i
*> 9.1.1.0/24 3.1.1.1 0 0 65009i
*> 3.1.2.1 0 0 65009i
• The output shows two valid routes to the destination 9.1.1.0/24, and both of them are marked with
a greater-than sign (>), indicating they are the best routes.
• By using the display ip routing-table command, you can find two routes to 9.1.1.0/24: one with next
hop 3.1.1.1 and outbound interface S2/0, the other with next hop 3.1.2.1 and outbound interface
S2/1.
BGP route summarization configuration
Network requirements
As shown in Figure 65, run EBGP between Router C and Router D, so the internal network and external
network can communicate with each other.
In AS 65106, configure static routing between Router A and Router B, configure OSPF between Router B
and Router C, and configure OSPF to redistribute static routes, so devices in the internal network can
communicate with each other.
Configure route summarization on Router C so BGP advertises a summary route instead of the specific
networks 192.168.64.0/24, 192.168.74.0/24, and 192.168.99.0/24 to Router D.