Hello sir, This is rajendran from chennai. I am having problem in nortel 3510 switch that is (it is in read only mode....it allows to view only...but we can't change or create and any other works) please tell me how to release read only mode to read and write mode i am waiting for your reply sir....thank you.

SOURCE: how to create vlan in nortol 3510 L3 switch

You would need to trunk the VLANS to the router and create sub
interfaces and then, create access lists applied to
the interfaces to control inter vlan communication. I hope this helps,

Router interfaces something like this, may not work on all versions of
IOS:

interface FastEthernet0/0
no ip address
speed 100
full-duplex
!
interface FastEthernet0/0.1
description VLAN1_Servers
encapsulation dot1Q 1 native
ip address 192.168.1.1 255.255.255.0
!
interface FastEthernet0/0.2
description VLAN2_QA
encapsulation dot1Q 2
ip address 192.168.2.1 255.255.255.0
!
interface FastEthernet0/0.3
description VLAN3_DEV
encapsulation dot1Q 3
ip address 192.168.3.1 255.255.255.0
!
interface FastEthernet0/0.4
description VLAN4_FIN
encapsulation dot1Q 4
ip address 192.168.4.1 255.255.255.0

SOURCE: how to change password in nortel 3510 with divice manager

iam unable to login with consol in nortel 3510 it is posible with fastethernet port to login give me solution
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