Version 6.8 45 Mediant MSBR
Configuration Guide 8. Static Routing
8.3 Example of "Floating” Static Route and Track
In this example, the MSBR1 needs to reach the 10.10.10.0/24 network segment from its
LAN. The destination network segment is reachable from both MSBR-R-WAN1 and MSBR-
R-WAN2; however, this example assumes that due to routing considerations, the route
through MSBR-R-WAN1 is preferable. Static routes will be configured through both of the
MSBRs, while the one pointing to MSBR-R-WAN2 will have lower metric value and will be
linked with a tracking object.
Figure 8-2: Multi WAN with Floating Static Route
If connectivity through MSBR2 fails, the tracking mechanism deletes the static route
pointing to MSBR-R-WAN1 from the local MSBR's routing table and the second, higher
metric value static route is used.
8.3.1 Configuration
MSBR1# show run data
Configure data
******************************************************************
**
General configuration omitted, assume that configured as in
diagram
******************************************************************
**
track 1 IcmpEcho 100.0.12.20 GigabitEthernet 0/0 interval 2
retries 2
ip route 10.10.10.0 255.255.255.0 100.0.12.20 GigabitEthernet
0/0 30 track 1
ip route 10.10.10.0 255.255.255.0 100.0.12.30 GigabitEthernet
0/0 50
Exit
MSBR1# show data track brief
Track Type State Max round trip
time (m.s)
1 ICMP reachability Up 21
MSBR1# show data ip route
Codes: K - kernel route, C - connected, S - static,
R - RIP, O - OSPF, B - BGP
C 1.1.1.12/32 [1/4] is directly connected, Loopback 1
C 100.0.12.0/24 [1/3] is directly connected, GigabitEthernet
0/0
C 192.169.12.0/24 [1/4] is directly connected, VLAN 1
S 10.10.10.0/24 [1/30] via 100.0.12.20, GigabitEthernet 0/0
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