There's an undocumented command for showing the IDBs:
[---Snip from Phrack 56---]
@sh idb
This command shows the hardware and software interface
databases.
this is cisco's way of keeping track of how many
interfaces are present
on the system.. includes hardware and software
interfaces (physical,
subinterfaces etc). there is a software limit of 1024
i believe in
ios 11 and 2048 in ios 12. this is a global limit for
the router.
output:
ctalkb#sh idb
19 SW IDBs allocated (2296 bytes each)
9 HW IDBs allocated (4008 bytes each)
HWIDB#1 1 FastEthernet0/0 (Ether)
HWIDB#2 2 Serial2/0:0 (Serial)
HWIDB#3 3 Ethernet3/0 (Ether)
HWIDB#4 4 Ethernet3/1 (Ether)
HWIDB#5 5 Ethernet3/2 (Ether)
HWIDB#6 6 Ethernet3/3 (Ether)
HWIDB#7 7 Serial4/0 (Serial)
HWIDB#8 8 Serial5/0 (Serial)
HWIDB#9 9 Loopback0
Have fun...
Chris M.
--- Katson PN Yeung <[EMAIL PROTECTED]> wrote:
> Dear all,
>
> When reading Caslow's book, there is a term called
> IDB (Interface Descriptor
> Block). It specifies the max number of interface the
> router can have.
>
> Anyone knows which IOS command can check the IDB
> number of a router?
>
> Thanks.
>
>
> _________________________________
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