04-26-2009 10:45 PM - edited 03-06-2019 05:23 AM
We have two switches Switch "A" is cisco 4510 switch and Switch "B" is 3550 switch. We are trying to make communications between two different Vlans IPs.
for eg :- We have created Vlan 850 on Switch"A" configured with IP and at Other Switch (Switc"B") IP is configured on Vlan 1. We want that IP of both different Vlan will be reachable from both ends / switches. PLease suggest.
Regards
04-26-2009 11:05 PM
Hi
Y dnot u configure u r intervlan routing on 4510..?
Configure ur 3550 as a vtp client and 4510 as a vtp server.Have a trunk link between these switches.
And on 4510 create the vlan u require.
conf t
switch(config)vlan 10 name test
switch(config)vlan 850 name sales
switch(config)interface vlan 10
ip address 192.168.1.1 255.255.255.0
no shut
exit
interface vlan 850
ip address 192.168.2.1 255.255.255.0
no shut
Thanks
Mahmood
04-26-2009 11:34 PM
Hii Mahmood thanks,
As you mentioning. We are not using Vlan 10. We only gave IP to default Vlan (Vlan1) on 3550 switch.
And actually Switch "B" is already using for our existing core network. So we can't do any major changes on the same.
4510 is new switch which we are now adding in existing network.
04-27-2009 12:11 AM
Hello Jimmy,
the two switches must have a common subnet.
you can build a "vlan converter" by using an additional link that you put in access mode
SWA
int g4/3
switchport
switchport mode access
switchport access vlan 850
no cdp enable
no shut
int vlan 850
ip address 10.10.10.2 255.255.255.0
SWB: already in production
int fx/y
switchport
switchport mode access
switchport access vlan 1
no cdp enable
no shut
Be aware that this joins two broadcast domains vlan1 and vlan850.
int vlan1
ip address x.x.x.y 255.255.255.0
ip address 10.10.10.2 255.255.255.0 secondary
with the secondary option you can adapt to the ip subnet in vlan850 if different from production.
(this step may be needed or not depending on what ip address you have assigned to the new switch SWA if it is compatible with SWB management subnet you don't need this step)
However, the best solution is:
provision of an ip address in management vlan (1 is not recommended but I guess you are using it) for the new switch
creation of SVI vlan1 with that ip address
setup of a trunk link between SWA and SWB.
This is a clean solution, the one above is suggested only for short time or for attemtping to get access to a switch.
Hope to help
Giuseppe
04-27-2009 07:38 AM
Hello Giuseppe,
As of now i have created L3 port i.e no switchport on Switch A(with a IP address from pool configured on Vlan1 of Switch B) Gig port which is connected to Switch B.
i.e
Switch A(New Switch on New IP Pool) :--
Int Vlan 850
ip addrea 100.1.1.1 255.255.255.224
end
interface gi4/3
no switchport
ip address 10.1.1.10 255.255.255.224
end
On Switch B (in this only default Vlan i.e Vlan 1 is present)
int vlan1
ip address 10.1.1.1 255.255.255.224
interface fa0/2
switch mode access
end
After doing this our requirement fulfilled(reachablity to servers which are connected from Switch B on Old/existing IP pools is happening).
Please suggest if anything wrong or limitations in the scenrio..Hope for the best output....
Will back to you if any further assistance.
regards
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