11-09-2009 04:12 AM - edited 03-06-2019 08:30 AM
Hi All,
I have 5 switches on LAN side configs are attached connected with router then the WAN, 4switches are stacked and 5th switch is not part of stack because of no space.
4 stack switch say switch1 are CISCO 3570 series 12.1 version and 5th switch is CISCO 3570Gseries ver 12.2
switches are in 1 default VLAN connected with the router . router have MPLS cloude
I write the proposed configs below, could you please check if I am missing something here
IP for the 4 stacked switches: 10.6.1.10
IP for the non stack switch: 10.6.1.11
Propose VLAN Configurations on CISCO Switches:
VTP and Encapsulation Configuration
StackSwitch1#
Vtp mode server
Vtp domain abcd
interface FastEthernetx/x/x
switchport mode trunk
switchport trunk encapsulation dot1q
end
Switch2#
Vtp mode client
Vtp domain abcd
interface GigabitEthernetx/x/x
switchport mode trunk
switchport trunk encapsulation dot1q
--------------------------------------------
To Create VLANs
#Vlan database
#vlan 62 name ICT
#vlan 63 name Voice
#vlan 64 name VC
#vlan 65 name Printers
--------------------------------------------
Assigning IP Address on VLANs
int vlan 62
Description *** Users***
Ip address 10.6.2.1 255.255.255.0
No shut
Ip helper-address 10.1.1.50, 10.1.1.51, 10.1.1.56
int vlan 63
Description *** Voice ***
Ip address 10.6.3.1 255.255.255.0
No shut
Ip helper-address 10.1.1.50, 10.1.1.51, 10.1.1.56
int vlan 64
Description *** Video Conferencing***
Ip address 10.6.4.1 255.255.255.0
No shut
Ip helper-address 10.1.1.50, 10.1.1.51, 10.1.1.56
int vlan 65
Description *** Printers***
Ip address 10.6.5.1 255.255.255.0
No shut
Ip helper-address 10.1.1.50, 10.1.1.51, 10.1.1.56
--------------------------------------------
Configuration on Ports for VLAN 62
interface FastEthernetx/x/x
switchport mode access
switchport access vlan 62
--------------------------------------------
Configuration on Ports for VLAN 63
interface FastEthernetx/x/x
switchport mode access
switchport access vlan 63
--------------------------------------------
Configuration on Ports for VLAN 64
interface FastEthernetx/x/x
switchport mode access
switchport access vlan 64
------------------------------------------
Configuration on Ports for VLAN 65
interface FastEthernetx/x/x
switchport mode access
switchport access vlan 65
--------------------------------------------
IP route , default gateway and Inter VLAN routing
Ip routing
ip default-gateway 10.6.1.1
ip classless
ip route 0.0.0.0 0.0.0.0 10.6.1.1
no ip http server
and then Routes in the router for new subnets
Questions1 : is the config ok?
2- do I need to do any thing specific for 3750 fast ethernet and Gagbit ethernet trunks point of view or VLAN point of view
3- ip helper address command will take 3 ips for 3 dhcp servers or not?
4- If you see the config switch 5 is showing interface like gagabit interface 5/0/1 which is not part of stack any idea why?
Please advise , your help and support will be highly appreciated
Config for switch 2
Switch2#sh run
Building configuration...
Current configuration : 2496 bytes
!
version 12.2
no service pad
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname LeedsSwitch2
!
enable secret 5 .
!
no aaa new-model
clock summer-time UTC recurring last Sun Mar 1:00 last Sun Oct 2:00
switch 5 provision ws-c3750g-48ts
system mtu routing 1500
ip subnet-zero
!
no file verify auto
spanning-tree mode pvst
spanning-tree extend system-id
vlan internal allocation policy ascending
interface GigabitEthernet5/0/1
interface GigabitEthernet5/0/2
interface GigabitEthernet5/0/3
interface GigabitEthernet5/0/4
!..
....
interface GigabitEthernet5/0/52
interface Vlan1
ip address 10.6.1.11 255.255.255.0
ip default-gateway 10.6.1.1
ip classless
ip http server
11-09-2009 08:15 AM
Hello Sohail,
some details are to be refined:
inter-vlan routing requires you to enable
ip routing
ip default-gateway is not needed when ip routing is enabled
ip route 0.0.0.0 0.0.0.0 10.6.1.1
is fine.
second switch may be configured as VTP server too for redundancy.
if the switch is standalone it should show its ports as 1/0/x.
have you connected it to the stack for some time?
you may need some action to have the ports numbered normally
Hope to help
Giuseppe
11-09-2009 08:26 AM
Hi Giuseppe,
Thansk for your reply, and much appreciate your help..you're a start and always help me..
yes switch2 was part of stack ages ago, but its a standalone now and still showing Gagetherx/x/x, can I resolve this issue?
Can I make switch 1 as a vtp server instead of switch 2?
any idea about my other questions?
1- is rest of the config OK?
2- do I need to do any thing specific for 3750 fast ethernet and Gagbit ethernet trunks point of view or VLAN point of view or normal config will work ???
3- ip helper address command will take 3 ips for 3 dhcp servers or not?
Please could you answer all the questions if possibel please.?
11-09-2009 08:53 AM
Hello Sohail,
3) you need three distinct lines for helper address one for each server
or you can use the directed broadcast if the three servers are in the same IP subnet
1) yes
2) nothing special is needed I think unless you want to do an etherchannel for connecting switch2 to two ports in two different stack members.
this can be seen as a meaningful improvement
I would suggest LACP bundles
channel-group x mode active
all member links have to be configured in the same way.
about VTP: you can configure BOTH as VTP servers
about numbering of interfaces I will look
something like
switch member 1
could work
(to be checked)
Hope to help
Giuseppe
11-09-2009 09:08 AM
Hi Giuseppe,
Thank You so much for your support, I am almost there now to digest everything you suggest, can you give me favor please, DHCP servers are in same subnet can you tell me what will be the command for the the directed broadcast please,
I'll configure both switches as a vtp server, and for the switch as per my understanding I only need to do 2 things:
vtp mode server
int gint f0/0/0
switchport mode trunk
switchport trunk encap dot1q
and that's it ..I am done (I hope)??
finally last question: in switch2's config
spanning-tree mode pvst
spanning-tree extend system-id
vlan internal allocation policy ascending
is it something I need to look at??will it not give me any problem?
I know i need lots of study but guys like you always help people like us when needed...
Regards
Jag
11-09-2009 09:33 AM
Hello Jag,
if the subnet is 10.10.10./24 the directed broadcast is 10.10.10.255
it is the last address in subnet that with all 1s in the host part.
>> spanning-tree mode pvst
spanning-tree extend system-id
vlan internal allocation policy ascending
these should be defaults
spanning-tree extend system-id:
causes STP bridge id to be made of:
base priority + Vlan#
the stack may have an older IOS where this is not enabled
Hope to help
Giuseppe
11-09-2009 09:39 AM
Thank you soo much Giuseppe,
This all make sense now. God Bless you.
I might nudge you again if I find any diffculty, :-)
Thanks Again.
regards
11-25-2009 03:41 AM
Hi Giuseppe,
How are you, further to our discussion I am having dificuties and I thought to nudge you again for help.
I am attaching my current and proposed diagram for new VLANs, which we agreed. But our service provider is not agree with this, as you see the diagram, they are proposing to create a link between leeds router which is currently 10.6.1.0/24 to 172.16.2.1/30 where 172.16.2.1 will be assign on router interface and 172.16.2.2 on switch intrface, delete routes for the onsite firewall from the router and place these routes in the 3750 switch which is currently working on default vlan with IP 10.6.1.10.
As per Service Provider we cannot add routes in the router for the MPLS or i actually missunderstand what he was saying and trying to convince me to add all routes in the switch.
I was thinking is it a good practise to do this as they are saying. or force them to add routes for new vlans on the mpls cloude.
is this all making any sense to you?
if yes then please could you give me any example?..if we agreed to service provider...please include voice traffic also in the scenario..
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