From: Mike Williams (ccie2be@swbell.net)
Date: Sat Aug 09 2003 - 13:28:35 GMT-3
Thank you. I was beginning to believe that I was losing my mind. But
we're on the same page...... The routing protocol serves no purpose if
you're simply routing between connected subnets. The fact the two
switches are trunked is moot as any host will be able to see either of
the switches IP in it's VLAN, in which case, the packet can be routed
then.
Mike W.
-----Original Message-----
From: Brian Dennis [mailto:bdennis@internetworkexpert.com]
Sent: Saturday, August 09, 2003 4:09 AM
To: 'Tony Schaffran'
Cc: 'Mike Williams'; 'Peng Zheng'; ccielab@groupstudy.com
Subject: RE: Cat 3550
Seeing as both switches will have connected routes to each subnet what
purpose will the routing protocol serve?
Brian Dennis, CCIE #2210 (R&S/ISP-Dial/Security)
bdennis@internetworkexpert.com Internetwork Expert, Inc.
http://www.InternetworkExpert.com
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Tony Schaffran
Sent: Friday, August 08, 2003 8:59 PM
To: 'Mike Williams'; 'Peng Zheng'; ccielab@groupstudy.com
Subject: RE: Cat 3550
How are you going to do inter-VLAN routing without a routing protocol?
Tony Schaffran
Network Analyst
CCIE #11071
CCNP, CCNA, CCDA,
NNCDS, NNCSS, CNE, MCSE
www.cconlinelabs.com
Your #1 choice for online Cisco rack rentals.
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Mike Williams
Sent: Friday, August 08, 2003 7:33 PM
To: 'Peng Zheng'; ccielab@groupstudy.com
Subject: RE: Cat 3550
If you've setup two 3550s with these VLANs and IPs, then the only thing
you would need to do to allow these hosts to communicate is A) make sure
you are trunking those VLANs between the two switches (which you may
have already done as part of your exercise) and B) make sure the hosts
are using one of the IPs on their respective VLAN as their gateway.
There shouldn't be any need for a routing protocol to be running for
inter-VLAN routing to take place here....
Mike W.
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Peng Zheng
Sent: Friday, August 08, 2003 9:04 PM
To: ccielab@groupstudy.com
Subject: Cat 3550
1. Config cat1 vlan 19 with IP 10.10.19.8/24, Vlan 20
with IP 10.10.20.8/24 and Vlan 21 with IP
10.10.21.8/24.
2. Config cat2 vlan 19 with IP 10.10.19.9/24, Vlan 20
with IP 10.10.20.9/24 and Vlan 21 with IP
10.10.21.9/24.
3. Configure cat1 and cat2 such that hosts on vlan 19,
20, 21 can communicate to each other.
It's easy for the first two. For the third one, I
think I must configure routing protocol on these
Vlans.
But I can not find related configs in the solution.
Below are configs related to routing and these Vlans:
------------------------------------------
interface FastEthernet0/19
switchport access vlan 19
no ip address
spanning-tree portfast
!
interface FastEthernet0/20
switchport access vlan 20
no ip address
spanning-tree portfast
!
interface FastEthernet0/21
switchport access vlan 21
no ip address
spanning-tree portfast
!
interface FastEthernet0/22
switchport trunk encapsulation isl
switchport trunk allowed vlan 1,2,15,19-21,1001-4094
switchport mode trunk
no ip address
spanning-tree vlan 19 cost 4
!
interface FastEthernet0/23
switchport trunk encapsulation isl
switchport trunk allowed vlan 1,2,15,19-21,1001-4094
switchport mode trunk
no ip address
spanning-tree vlan 20 cost 4
!
interface FastEthernet0/24
switchport trunk encapsulation isl
switchport trunk allowed vlan 1,2,15,19-21,1001-4094
switchport mode trunk
no ip address
spanning-tree vlan 21 cost 4
!
interface GigabitEthernet0/1
no switchport
ip address 10.10.89.8 255.255.255.0
!
interface GigabitEthernet0/2
no ip address
!
interface Vlan1
no ip address
shutdown
!
interface Vlan15
ip address 150.50.15.8 255.255.255.0
ip ospf authentication message-digest
ip ospf message-digest-key 1 md5 hello
!
interface Vlan19
ip address 10.10.19.8 255.255.255.0
no ip redirects
standby timers 5 15
standby 1 ip 10.10.19.100
standby 1 priority 200
standby 1 preempt
standby 2 ip 10.10.19.200
standby 2 timers 5 15
standby 2 priority 100
!
interface Vlan20
ip address 10.10.20.8 255.255.255.0
no ip redirects
standby timers 5 15
standby 1 ip 10.10.20.100
standby 1 priority 200
standby 1 preempt
standby 2 ip 10.10.20.200
standby 2 timers 5 15
standby 2 priority 100
!
interface Vlan21
ip address 10.10.21.8 255.255.255.0
no ip redirects
standby 1 ip 10.10.21.100
standby 1 timers 5 15
standby 1 priority 200
standby 1 preempt
standby 2 ip 10.10.21.200
standby 2 timers 5 15
standby 2 priority 100
!
router ospf 100
log-adjacency-changes
network 150.50.15.0 0.0.0.255 area 0
!
-------------------------------------------------
I don't know how these vlans communicate to each
other.
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