Example For Configuring Is-Is Mt - Huawei Quidway NetEngine80E Configuration Manual

HUAWEI NetEngine80E/40E Router
Configuration Guide - IP Routing
l

7.24.7 Example for Configuring IS-IS MT

The following example shows how to implement network interconnection using IS-IS on a
network with an IPv4/IPv6 topology.
Networking Requirements
In real-world situations, an IPv4/IPv6 topology has a shortcoming. When various end-to-end
services, such as voice and data services share the same physical links, either IPv4 or IPv6
packets are discarded on the shablue links, affecting transmission quality. To address this
problem, configure multi-topologies and create separate IPv4 and IPv6 routing tables.
As shown in
Router B supports only IPv4.
Without IS-IS multi-topologies, IPv6 packets cannot be sent from Router A to Loopback 1 on
Router C, because the calculated SPT passes through Router B that does not support IPv6.
To ensure IPv6 packet transmission, enable IS-IS multi-topologies and create separate IPv4 and
IPv6 routing tables.
Issue 02 (2014-09-30)
#
ipv4-family unicast
undo synchronization
network 10.2.1.0 255.255.255.0
peer 10.2.1.2 enable
#
route-policy RTC permit node 0
if-match as-path-filter 1
apply cost 20
#
ip as-path-filter 1 permit 65009
#
return
Configuration file of Router C
#
sysname RouterC
#
interface Pos1/0/0
link-protocol ppp
ip address 10.2.1.2 255.255.255.0
#
interface LoopBack0
ip address 2.2.2.2 255.255.255.255
#
bgp 65009
router-id 2.2.2.2
peer 10.2.1.1 as-number 65008
#
ipv4-family unicast
undo synchronization
network 10.2.1.0 255.255.255.0
import-route static
import-route isis 1
peer 10.2.1.1 enable
#
ip route-static 3.3.3.3 255.255.255.255 NULL0
#
return
Figure 7-10, Router A, Router C, and Router D support both IPv4 and IPv6, whereas
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7 IS-IS Configuration
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