From: Ram Shummoogum (rshummoo@ca.ibm.com)
Date: Tue May 20 2003 - 15:17:07 GMT-3
LOAD balancing it is.
R1#traceroute 11.1.1.3
Type escape sequence to abort.
Tracing the route to 11.1.1.3
1 10.1.1.2 0 msec
10.1.1.1 0 msec
10.1.1.2 4 msec
2 11.1.1.3 0 msec * 0 msec
sh ip route on R1
R1#sh ip route
Codes: C - connected, S - static, I - IGRP, 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, E - EGP
i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter
area
* - candidate default, U - per-user static route, o - ODR
P - periodic downloaded static route
Gateway of last resort is not set
100.0.0.0/32 is subnetted, 1 subnets
C 100.0.0.5 is directly connected, Loopback0
10.0.0.0/24 is subnetted, 1 subnets
C 10.1.1.0 is directly connected, FastEthernet0/0
11.0.0.0/24 is subnetted, 1 subnets
O 11.1.1.0 [110/2] via 10.1.1.2, 00:05:23, FastEthernet0/0
[110/2] via 10.1.1.1, 00:05:23, FastEthernet0/0
R1#
Note:
You have 1 hour to ask any more questions before I kill the setup.
RAM
Cezar Fistik <cfistik@moldovacc.md>@groupstudy.com on 05/20/2003 11:39:10
AM
Please respond to Cezar Fistik <cfistik@moldovacc.md>
Sent by: nobody@groupstudy.com
To: ccielab@groupstudy.com
cc:
Subject: Cat3550 routing issue
Hello group,
I would appreciate if someone could help me with this problem.
There are 2 Cat3550 connected by a layer 2 trunk. On both switches
there are 2 vlans, let's say VLAN_1 and VLAN_2. Each vlan has one vlan
interface configured, as follows:
Cat3350-1
interface vlan 1
ip address 10.1.1.1 255.255.255.0
interface vlan 2
ip address 11.1.1.1 255.255.255.0
Cat3350-2
interface vlan 1
ip address 10.1.1.2 255.255.255.0
interface vlan 2
ip address 11.1.1.2 255.255.255.0
Both switches have ip routing enabled and are running ospf. At this
moment, the routing table on both switches should look something like
this:
10.1.1.0/24 is dirrectly connected
11.1.1.0/24 is dirrectly connected
Now, suppose 2 routers are added to this topology, R1 to VLAN_1 on
Cat3350-1 and R2 to VLAN_2 on Cat3350-2, with the following ip
configurations:
R1
interface eth 0
ip address 10.1.1.3 255.255.255.0
R2
interface eth 0
ip address 11.1.1.3 255.255.255.0
Both routers are running ospf.
The question is how would the routing table on either router look
like? I am interested in what will be the next hop for the network that is
not in rotuer's own vlan. Will there be 2 next hops pointing to both
vlan interfaces, which means load balancing or only one, if so wich
one and why? I would also appreciate a trace output from one rotuer to
the other one.
I don't have 2 Cat3550 so I cannot lab it myself. Hope
someone can help me.
Thanks.
-- Best regards, Cezar mailto:cfistik@moldovacc.md
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