Re: How to check IDB?
On Sat, 6 Jan 2001, Katson PN Yeung 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? show idb its not documented before 12.1, but should be available in at least 12.0, just hidden Brian Thanks. _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] --- I'm buying used CISCO gear!! email me for a quote Brian Feeny e:[EMAIL PROTECTED] CCNP+Voice/ATM/Security p:318.222.2638x109 CCDPf:318.221.6612 Network Administrator ShreveNet Inc. (ASN 11881) _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: How to check IDB?
I think it is also dependant on the router as well as the IOS version. = IIRC a 7200 running 12.0 will support 3000 IDB Probably the best way to find out is to ask a Cisco SE. They have = access to web pages and information that isn't posted on the public = site. That is how we found the limit for the 7200's. "Katson PN Yeung" [EMAIL PROTECTED] wrote in message = 936kfm$hiq$[EMAIL PROTECTED]">news:936kfm$hiq$[EMAIL PROTECTED]... Thanks Chris. =20 Your information is very useful. =20 Another question is, how can I know the IDB number for each IOS = version? Any place I can find such info? =20 Many thanks to you. =20 =20 =20 "Chris McCoy" [EMAIL PROTECTED] wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... 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. _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: How to check IDB?
Hi, This is from "EIGRP Network Design Solutions" by Ivan Pepelnjak, p.296 NOTE: Using point-to-point subinterfaces in networks where the core router has several neighbors can also lead to Interface Descriptor Block(IDB) limit problems; most routers can support only up to 300 physical and logical interfaces when running Cisco IOS prior to version 12.0. The IDB limit is platform-dependent in IOS 11.1CA and IOS 12.0 and has been raised for the high-end routers like 7x00 series routers or AS5800 access servers. Hope this helps, And my router(11.2 enterprise) doesn't accept "sh idb". What IOS version does support it? Jaeheon Yoo - Original Message - From: "Katson PN Yeung" [EMAIL PROTECTED] Newsgroups: groupstudy.cisco To: [EMAIL PROTECTED] Sent: Saturday, January 06, 2001 2:15 AM Subject: Re: How to check IDB? Thanks Chris. Your information is very useful. Another question is, how can I know the IDB number for each IOS version? Any place I can find such info? Many thanks to you. "Chris McCoy" [EMAIL PROTECTED] wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... 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. _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] __ Do You Yahoo!? Yahoo! Photos - Share your holiday photos online! http://photos.yahoo.com/ _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: How to check IDB?
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. _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] __ Do You Yahoo!? Yahoo! Photos - Share your holiday photos online! http://photos.yahoo.com/ _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: How to check IDB?
Thanks Chris. Your information is very useful. Another question is, how can I know the IDB number for each IOS version? Any place I can find such info? Many thanks to you. "Chris McCoy" [EMAIL PROTECTED] wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... 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. _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] __ Do You Yahoo!? Yahoo! Photos - Share your holiday photos online! http://photos.yahoo.com/ _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
