Static Routes

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Mar 3rd, 2009
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Hi,

I have configured static routes between two routers. I have 4 links between the routers & have traffic routed.


The interface IP address :

Router -1:

Serial 0/0/0 - 192.168.248.1 255.255.255.252

Serial0/1/0 - 192.168.248.5 255.255.255.252

Serial0/2/0:0 - 192.168.248.9 255.255.255.252

Serial0/2/1:0 - 192.168.248.13 255.255.255.252


There's static routes configured for networks as shown below:


ip route 192.168.130.0 255.255.255.0 192.168.248.2

ip route 192.168.130.0 255.255.255.0 192.168.248.6

ip route 192.168.130.0 255.255.255.0 192.168.248.10

ip route 192.168.130.0 255.255.255.0 192.168.248.14


Now, when I check the traffic, I see there is one way traffic issue. I see all the traffic going via 192.168.248.14 interface only.

& on the other end as well, all traffic is traversing 192.168.248.5 interface one way.


I do not see traffic on the other two links at all.



Can you please assit in this? I want only static routing on my routers & want equal distribution of traffic on all the four links.

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Jon Marshall Tue, 03/03/2009 - 05:06
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Can you post a "sh ip route" from the router.


Jon

Giuseppe Larosa Tue, 03/03/2009 - 05:08
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Hello Deepa,

you need to have multiple traffic flows to see load balancing in effect.


load balancing is based on exor of

source ip address exor dest ip address exor hash seed


so if all your traffic belongs to a single flow (same ip source, same ip dest) you will see only one link used in each direction


Hope to help

Giuseppe


deepa.muralidharan Tue, 03/03/2009 - 05:13
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Please fond the routes configured :

ip route 148.183.58.0 255.255.255.0 192.168.248.2

ip route 148.183.58.0 255.255.255.0 192.168.248.6

ip route 148.183.58.0 255.255.255.0 192.168.248.10

ip route 148.183.58.0 255.255.255.0 192.168.248.14

ip route 148.183.58.75 255.255.255.255 192.168.248.2

ip route 148.183.58.75 255.255.255.255 192.168.248.6

ip route 148.183.58.75 255.255.255.255 192.168.248.10

ip route 148.183.58.75 255.255.255.255 192.168.248.14

ip route 148.183.58.77 255.255.255.255 192.168.248.2

ip route 148.183.58.77 255.255.255.255 192.168.248.6

ip route 148.183.58.77 255.255.255.255 192.168.248.10

ip route 148.183.58.77 255.255.255.255 192.168.248.14

ip route 148.183.80.0 255.255.248.0 192.168.248.2

ip route 148.183.80.0 255.255.248.0 192.168.248.6

ip route 148.183.80.0 255.255.248.0 192.168.248.10

ip route 148.183.80.0 255.255.248.0 192.168.248.14


This is the route configured at one end.


Please find the 'sh ip route details' below:

ncives-rt3#sh ip route

Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP

D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area

N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2

E1 - OSPF external type 1, E2 - OSPF external type 2

i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level

ia - IS-IS inter area, * - candidate default, U - per-user static r

o - ODR, P - periodic downloaded static route


Gateway of last resort is 192.168.247.1 to network 0.0.0.0


C 192.168.247.0/24 is directly connected, GigabitEthernet0/0

S 192.168.130.0/24 [1/0] via 192.168.248.14

[1/0] via 192.168.248.10

[1/0] via 192.168.248.6

[1/0] via 192.168.248.2

192.168.248.0/30 is subnetted, 4 subnets

C 192.168.248.0 is directly connected, Serial0/0/0

C 192.168.248.4 is directly connected, Serial0/1/0

C 192.168.248.8 is directly connected, Serial0/2/0:0

C 192.168.248.12 is directly connected, Serial0/2/1:0

148.183.0.0/16 is variably subnetted, 4 subnets, 3 masks

S 148.183.58.0/24 [1/0] via 192.168.248.14

[1/0] via 192.168.248.10

[1/0] via 192.168.248.6

[1/0] via 192.168.248.2

S 148.183.58.75/32 [1/0] via 192.168.248.14

[1/0] via 192.168.248.10

[1/0] via 192.168.248.6

[1/0] via 192.168.248.2

S 148.183.58.77/32 [1/0] via 192.168.248.14

[1/0] via 192.168.248.10

[1/0] via 192.168.248.6

[1/0] via 192.168.248.2

S 148.183.80.0/21 [1/0] via 192.168.248.14

[1/0] via 192.168.248.10

[1/0] via 192.168.248.6

[1/0] via 192.168.248.2

S* 0.0.0.0/0 [1/0] via 192.168.247.1

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