Huawei S6700 Series Configuration Manual page 355

S6700 Series Ethernet Switches
Configuration Guide - IP Routing
6.
7.
Configuration Files
l
Issue 01 (2012-03-15)
10.1.2.0/24
L/-
192.168.0.0/24
A/-/-/-
Flags: D-Direct, A-Added to URT, L-Advertised in LSPs, S-IGP Shortcut,
As shown in the routing table, the number of equal-cost routes for load balancing is restored
to the default value of 6. Both the next hops of Switch A, 10.1.1.2 (that is, SwitchB) and
10.1.2.2 (that is, SwitchC) now become valid.
(Optional) Configure the preference for equal-cost routes on Switch A.
If you do not perform load balancing through Switch B and SwitchC, configure the
preference of the equal-cost routes and specify the next hop.
[SwitchA] isis
[SwitchA-isis-1] nexthop 10.1.2.2 weight 1
[SwitchA-isis-1] quit
Verify the configuration.
# Display the routing table of SwitchA.
[SwitchA] display isis route
IPV4 Destination
Flags
------------------------------------------------------------------------------
--
192.168.1.0/24
A/-/-/-
10.1.1.0/24
L/-
172.16.1.0/24
L/-
172.17.1.0/24
A/-/-/-
10.1.2.0/24
L/-
192.168.0.0/24
A/-/-/-
Flags: D-Direct, A-Added to URT, L-Advertised in LSPs, S-IGP Shortcut,
As shown in the routing table, the preference (with the weight of 1) of the next hop 10.1.2.2,
the Switch C, is higher than that of 10.1.1.2, the Switch B, after the preference is configured
for equal-cost routes. Thus, IS-IS chooses the next hop 10.1.2.2 as the best route.
Configuration file of Switch A
#
sysname SwitchA
#
vlan batch 10 20 50
#
isis 1
is-level level-2
network-entity 10.0000.0000.0001.00
nexthop 10.1.2.2 weight
#
interface Vlanif10
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10 NULL
20 NULL
U-Up/Down Bit Set
Route information for ISIS(1)
-----------------------------
ISIS(1) Level-2 Forwarding Table
--------------------------------
IntCost ExtCost
20 NULL
10 NULL
10 NULL
30 NULL
10 NULL
20 NULL
U-Up/Down Bit Set
6 IS-IS Configuration
Vlanif20 Direct
Vlanif10 10.1.1.2
ExitInterface NextHop
Vlanif20 10.1.2.2
Vlanif10 Direct
Vlanif50 Direct
Vlanif20 10.1.2.2
Vlanif20 Direct
Vlanif10 10.1.1.2
D/-/
D/-/
D/-/
D/-/
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