Hi Folks, I have this complicated scenerio, and really need someone's help.
The new network: (2) 6509 Switches with layer 3 blade(5) 3500 Gigabit Stack
for Server farm 1. The subnet will be 192.160.20.0/24 VLAN 20(5) 3500
Gigable Stack for Server farm 2. The subnet will be 192.168.30.0/24 VLAN
30(1) 4006 for IDF will be on VLAN 85, subnet 192.168.85.0.24(1) 4006 for
same IDF, but will be on VLAN 86, subnet 192.168.86.0.24 1st 6509 will be
root bridge for vlan 85 to reach vlan 20, 2nd 6509 will be root bridge for
vlan 85 to reach vlan 302nd 6509 will be a root bridge for vlan 86 to reach
vlan 30, 1st 6509 will be a root bridge for vlan 85 to reach vlan 20. On
top, I will also do HSRP for layer 3 redundancy. per say on 6509's, I could
do 1st
6509:
2nd 6509int vlan 85
int vlan 85ip address 192.168.85.2 255.255.255.0
ip address 192.168.85.3 255.255.255.0standby 1 ip ip
192.168.85.1 standby 1 ip
192.168.85.1standby 1 priority 100
standby 1 priority 120 int vlan 86
int vlan 86ip address 192.168.86.2
255.255.255.0 ip address 192.168.86.3
255.255.255.0 standby 1 ip 192.168.86.1
standby 1 ip 192.168.86.1standby 1 priority 100
standby 1 priority 120 Sam!
e procedure for server farm vlans 20 and 30, and other vlans. To add the complexity,
customer has an exisiting network and want to migrate slowly by connecting their
existing network to this new network. Customer currently has (2) Catalyst 4000 Server
Farm switches and two 7500 router. and tons of IDF swithes and they reach the server
farm switches via 7500 routers. 1st 4006 has subnet 192.168.20.0/24 same as we will
use for the new network2nd 4006 has subnet 192.168.30.0/24 again same for the new
server farms. No vlans are used. (2) 7500 router connects to both switch to support
HSRP. 7500 routers are doing both LAN and WAN traffic. Eventually 7500 will only be
used for WAN after the migration. One thing I could do to connect their 4006 switch
to my 3500 server farm switches. All I need to make sure that to assign a different
ip addresses on 6509 switches from the same existing subnets which are 192.168.20.0
and 192.168.30.0. Meaning if the customer is using 192.!
168.20.1 (Virtual ip address for HSRP) and 192.168.20.2 an 192.168.20.3 as physical
address on 1st 7507 and 192.168.30.1 (Virtual IP address for HSRP), 192.168.30.2 and
192.168.30.3 as physical addresses on the 2nd 7507. I could use the different
addresses from the same subnets for my 6509 backbone switches let say, 192.168.20.252
(virtual ip address, and 192.168.20.253 and 254 as a physical ip addresses. Luckily
only server farm subnets can not be changed. For the floors' IDFs they will be using
all new subnets which will not conflict with their exisiting subnets. Now, 6509
switches will be connecting to the new IDF switches. Now, traffic from the 6509 (new
network) and traffic from the 7500 routers should be able to reach the server which
are currently on 4006 switches but slowly will be moved to 3500 gigastack switches.
Will this work? Someone said that first I will have to connect 4006 switches
serverfarm to the new 3500 switch server farm, and then I will also hav!
e to connect 7500 routers direclty to 3500 server farm switches in order for traffic
to reach to server farms from 6509 and 7500 respectivlely. What a mess ? I really
need suggestions here to smoothly do this. Regards, Teza
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