|
Home > Archive > alt.certification.cisco > September 2003 > OSPF & EIGRP "network" commands
You are viewing an archived Text-only version of the thread.
To view this thread in it's original format and/or if you want to reply to
this thread please [click here]
| Author |
OSPF & EIGRP "network" commands
|
|
|
| Has anyone noticed that one can now use classless "network" statements in
EIGRP? For example:
router eigrp 200
network 192.168.200.16 255.255.255.240
Moreover, you can also configure it like this:
router eigrp 200
network 192.168.200.16 0.0.0.15
In other words, the mask can either be the network mask or the wildcard
mask, and it's interpreted the same way by the IOS. In the running config,
the configuration will be this in either case:
router eigrp 200
network 192.168.200.16 0.0.0.15
Classless network statements became available in IOS 12.0(4)T
I just tried to use a network mask instead of a wildcard mask in OSPF, and
it worked too. The IOS interpreted the following statement:
router ospf 200
network 192.168.101.0 255.255.255.0
as this:
router ospf 200
network 192.168.101.0 0.0.0.255
Does anyone know which format the simulators take in the new BSCI exam
(642-801)?
Thanks,
Grey
| |
|
| can't confirm, but that would be something good to investigate, because the
exam will most likely mark it wrong if they don't consider it to be the
right answer =(
"Grey" <bbb@ccc.com> wrote in message
news:y_OcnTsNi4uWpPaiXTWJig@co
mcast.com...
> Has anyone noticed that one can now use classless "network" statements in
> EIGRP? For example:
>
> router eigrp 200
> network 192.168.200.16 255.255.255.240
>
> Moreover, you can also configure it like this:
>
> router eigrp 200
> network 192.168.200.16 0.0.0.15
>
> In other words, the mask can either be the network mask or the wildcard
> mask, and it's interpreted the same way by the IOS. In the running config,
> the configuration will be this in either case:
>
> router eigrp 200
> network 192.168.200.16 0.0.0.15
>
> Classless network statements became available in IOS 12.0(4)T
>
> I just tried to use a network mask instead of a wildcard mask in OSPF, and
> it worked too. The IOS interpreted the following statement:
>
> router ospf 200
> network 192.168.101.0 255.255.255.0
>
> as this:
>
> router ospf 200
> network 192.168.101.0 0.0.0.255
>
> Does anyone know which format the simulators take in the new BSCI exam
> (642-801)?
>
> Thanks,
>
> Grey
>
>
| |
| Robert Chen 2003-09-20, 12:24 pm |
| You can always use VLSM with EIGRP. IGRP and RIP V1 are the only two that
can't.
"Grey" <bbb@ccc.com> wrote in message
news:y_OcnTsNi4uWpPaiXTWJig@co
mcast.com...
> Has anyone noticed that one can now use classless "network" statements in
> EIGRP? For example:
>
> router eigrp 200
> network 192.168.200.16 255.255.255.240
>
> Moreover, you can also configure it like this:
>
> router eigrp 200
> network 192.168.200.16 0.0.0.15
>
> In other words, the mask can either be the network mask or the wildcard
> mask, and it's interpreted the same way by the IOS. In the running config,
> the configuration will be this in either case:
>
> router eigrp 200
> network 192.168.200.16 0.0.0.15
>
> Classless network statements became available in IOS 12.0(4)T
>
> I just tried to use a network mask instead of a wildcard mask in OSPF, and
> it worked too. The IOS interpreted the following statement:
>
> router ospf 200
> network 192.168.101.0 255.255.255.0
>
> as this:
>
> router ospf 200
> network 192.168.101.0 0.0.0.255
>
> Does anyone know which format the simulators take in the new BSCI exam
> (642-801)?
>
> Thanks,
>
> Grey
>
>
| |
|
| I wasn't talking about VLSM, I was talking about how to use the "network"
command. Before IOS v. 12.0(4)T, you had to use the classfull network number
in the "network" command to enable all subnets of the network connected to a
router's interfaces for EIGRP routing. If you didn't need to advertise all
the subnets, you had to use "passive-interface" commands to prevent the
router from advertising these subnets. Starting in version 12.0(4)T, you can
actually advertise subnets or summarized subnets (supersubnets) in the
"network" command. However, when you use a mask in the "network" command,
you virtually disable autosummarization at the classful network boundary
even if you haven't issued the "no auto-summary" command. The router will
advertise your subnets to other routers instead of advertising the classful
network like it used to do by default. This is not covered in the Ciscopress
"Building Scalable Cisco Networks" book that I'm using. It may be mentioned
in the newer BSCI book, but I doubt it. For the exam, I think the safest way
is to use the "network" command in EIGRP as it was used before this latest
change (by advertising the network number without a mask and implementing
"passive-interface" commands for the subnets that shouldn't be advertised).
Grey
"Robert Chen" <rtc0@erols.com> wrote in message
news:bkhtaf$2vh$1@bob.news.rcn.net...
> You can always use VLSM with EIGRP. IGRP and RIP V1 are the only two that
> can't.
> "Grey" <bbb@ccc.com> wrote in message
> news:y_OcnTsNi4uWpPaiXTWJig@co
mcast.com...
> > Has anyone noticed that one can now use classless "network" statements
in
> > EIGRP? For example:
> >
> > router eigrp 200
> > network 192.168.200.16 255.255.255.240
> >
> > Moreover, you can also configure it like this:
> >
> > router eigrp 200
> > network 192.168.200.16 0.0.0.15
> >
> > In other words, the mask can either be the network mask or the wildcard
> > mask, and it's interpreted the same way by the IOS. In the running
config,
> > the configuration will be this in either case:
> >
> > router eigrp 200
> > network 192.168.200.16 0.0.0.15
> >
> > Classless network statements became available in IOS 12.0(4)T
> >
> > I just tried to use a network mask instead of a wildcard mask in OSPF,
and
> > it worked too. The IOS interpreted the following statement:
> >
> > router ospf 200
> > network 192.168.101.0 255.255.255.0
> >
> > as this:
> >
> > router ospf 200
> > network 192.168.101.0 0.0.0.255
> >
> > Does anyone know which format the simulators take in the new BSCI exam
> > (642-801)?
> >
> > Thanks,
> >
> > Grey
> >
> >
>
>
| |
| John Agosta 2003-09-20, 2:24 pm |
|
"Grey" <bbb@ccc.com> wrote in message
news:X4acncVFZaKoHvGiXTWJig@co
mcast.com...
> I wasn't talking about VLSM, I was talking about how to use the "network"
> command. Before IOS v. 12.0(4)T, you had to use the classfull network
number
> in the "network" command to enable all subnets of the network connected to
a
> router's interfaces for EIGRP routing. If you didn't need to advertise all
> the subnets, you had to use "passive-interface" commands to prevent the
> router from advertising these subnets. Starting in version 12.0(4)T, you
can
> actually advertise subnets or summarized subnets (supersubnets) in the
> "network" command. However, when you use a mask in the "network" command,
> you virtually disable autosummarization at the classful network boundary
> even if you haven't issued the "no auto-summary" command. The router will
> advertise your subnets to other routers instead of advertising the
classful
> network like it used to do by default. This is not covered in the
Ciscopress
> "Building Scalable Cisco Networks" book that I'm using. It may be
mentioned
> in the newer BSCI book, but I doubt it. For the exam, I think the safest
way
> is to use the "network" command in EIGRP as it was used before this latest
> change (by advertising the network number without a mask and implementing
> "passive-interface" commands for the subnets that shouldn't be
advertised).
>
> Grey
>
> "Robert Chen" <rtc0@erols.com> wrote in message
> news:bkhtaf$2vh$1@bob.news.rcn.net...
> > You can always use VLSM with EIGRP. IGRP and RIP V1 are the only two
that
> > can't.
> > "Grey" <bbb@ccc.com> wrote in message
> > news:y_OcnTsNi4uWpPaiXTWJig@co
mcast.com...
> > > Has anyone noticed that one can now use classless "network" statements
> in
> > > EIGRP? For example:
> > >
> > > router eigrp 200
> > > network 192.168.200.16 255.255.255.240
> > >
> > > Moreover, you can also configure it like this:
> > >
> > > router eigrp 200
> > > network 192.168.200.16 0.0.0.15
> > >
> > > In other words, the mask can either be the network mask or the
wildcard
> > > mask, and it's interpreted the same way by the IOS. In the running
> config,
> > > the configuration will be this in either case:
> > >
> > > router eigrp 200
> > > network 192.168.200.16 0.0.0.15
> > >
> > > Classless network statements became available in IOS 12.0(4)T
> > >
> > > I just tried to use a network mask instead of a wildcard mask in OSPF,
> and
> > > it worked too. The IOS interpreted the following statement:
> > >
> > > router ospf 200
> > > network 192.168.101.0 255.255.255.0
> > >
> > > as this:
> > >
> > > router ospf 200
> > > network 192.168.101.0 0.0.0.255
> > >
> > > Does anyone know which format the simulators take in the new BSCI exam
> > > (642-801)?
> > >
> > > Thanks,
> > >
> > > Grey
> > >
In the current official cisco BSCI course V2.0,
the EIGRP wildcard mask IS covered.
Assuming one is taking the BSCI exam which
coincides with the version 2.0 course material,
keep this in mind....
-ja
| |
|
| John,
Thanks for your post! I'm glad you mentioned this. Is BSCI version 2
designed for 642-801? Also, do you know of any study materials published for
BSCI version 2? The official Cisco book isn't coming out until November.
Thanks
Grey
"John Agosta" <j_agosta@wideopenwest.kom> wrote in message
news:jXOdnZ2GFLKjEfGiXTWJkg@wi
deopenwest.com...
>
> "Grey" <bbb@ccc.com> wrote in message
> news:X4acncVFZaKoHvGiXTWJig@co
mcast.com...
> > I wasn't talking about VLSM, I was talking about how to use the
"network"
> > command. Before IOS v. 12.0(4)T, you had to use the classfull network
> number
> > in the "network" command to enable all subnets of the network connected
to
> a
> > router's interfaces for EIGRP routing. If you didn't need to advertise
all
> > the subnets, you had to use "passive-interface" commands to prevent the
> > router from advertising these subnets. Starting in version 12.0(4)T, you
> can
> > actually advertise subnets or summarized subnets (supersubnets) in the
> > "network" command. However, when you use a mask in the "network"
command,
> > you virtually disable autosummarization at the classful network boundary
> > even if you haven't issued the "no auto-summary" command. The router
will
> > advertise your subnets to other routers instead of advertising the
> classful
> > network like it used to do by default. This is not covered in the
> Ciscopress
> > "Building Scalable Cisco Networks" book that I'm using. It may be
> mentioned
> > in the newer BSCI book, but I doubt it. For the exam, I think the safest
> way
> > is to use the "network" command in EIGRP as it was used before this
latest
> > change (by advertising the network number without a mask and
implementing[color
=green]
> > "passive-interface" commands for the subnets that shouldn't be
> advertised).
> >
> > Grey
> >
> > "Robert Chen" <rtc0@erols.com> wrote in message
> > news:bkhtaf$2vh$1@bob.news.rcn.net...
> > > You can always use VLSM with EIGRP. IGRP and RIP V1 are the only two
> that
> > > can't.
> > > "Grey" <bbb@ccc.com> wrote in message
> > > news:y_OcnTsNi4uWpPaiXTWJig@co
mcast.com...
> > > > Has anyone noticed that one can now use classless "network"[/color]
statements
> > in
> > > > EIGRP? For example:
> > > >
> > > > router eigrp 200
> > > > network 192.168.200.16 255.255.255.240
> > > >
> > > > Moreover, you can also configure it like this:
> > > >
> > > > router eigrp 200
> > > > network 192.168.200.16 0.0.0.15
> > > >
> > > > In other words, the mask can either be the network mask or the
> wildcard
> > > > mask, and it's interpreted the same way by the IOS. In the running
> > config,
> > > > the configuration will be this in either case:
> > > >
> > > > router eigrp 200
> > > > network 192.168.200.16 0.0.0.15
> > > >
> > > > Classless network statements became available in IOS 12.0(4)T
> > > >
> > > > I just tried to use a network mask instead of a wildcard mask in
OSPF,
> > and
> > > > it worked too. The IOS interpreted the following statement:
> > > >
> > > > router ospf 200
> > > > network 192.168.101.0 255.255.255.0
> > > >
> > > > as this:
> > > >
> > > > router ospf 200
> > > > network 192.168.101.0 0.0.0.255
> > > >
> > > > Does anyone know which format the simulators take in the new BSCI
exam[
color=darkred]
> > > > (642-801)?
> > > >
> > > > Thanks,
> > > >
> > > > Grey
> > > >
>
>
>
> In the current official cisco BSCI course V2.0,
> the EIGRP wildcard mask IS covered.
> Assuming one is taking the BSCI exam which
> coincides with the version 2.0 course material,
> keep this in mind....
>
> -ja
>
>[/color]
| |
| John Agosta 2003-09-20, 4:25 pm |
| Well, right now the official course is out, but you gotta take a class to
get it....
In the meantime, I would suggest boning up on
"basic" NAT, OSPF, EIRGP (with the wild card option)Dialer profiles, ISDN
PRI, and IPv6.
These are about the only subjects I can think of
outside the scope of what you already can find
in a Cisco BSCI book currently in stock at your local bookstore......
-ja
"Grey" <bbb@ccc.com> wrote in message
news:uNycnepVK4WkCPGiXTWJiw@co
mcast.com...
> John,
>
> Thanks for your post! I'm glad you mentioned this. Is BSCI version 2
> designed for 642-801? Also, do you know of any study materials published
for
> BSCI version 2? The official Cisco book isn't coming out until November.
>
> Thanks
>
> Grey
>
> "John Agosta" <j_agosta@wideopenwest.kom> wrote in message
> news:jXOdnZ2GFLKjEfGiXTWJkg@wi
deopenwest.com...
> >
> > "Grey" <bbb@ccc.com> wrote in message
> > news:X4acncVFZaKoHvGiXTWJig@co
mcast.com...
> > > I wasn't talking about VLSM, I was talking about how to use the
> "network"
> > > command. Before IOS v. 12.0(4)T, you had to use the classfull network
> > number
> > > in the "network" command to enable all subnets of the network
connected
> to
> > a
> > > router's interfaces for EIGRP routing. If you didn't need to advertise
> all
> > > the subnets, you had to use "passive-interface" commands to prevent
the[c
olor=darkred]
> > > router from advertising these subnets. Starting in version 12.0(4)T,[/color]
you
> > can
> > > actually advertise subnets or summarized subnets (supersubnets) in the
> > > "network" command. However, when you use a mask in the "network"
> command,
> > > you virtually disable autosummarization at the classful network
boundary
> > > even if you haven't issued the "no auto-summary" command. The router
> will
> > > advertise your subnets to other routers instead of advertising the
> > classful
> > > network like it used to do by default. This is not covered in the
> > Ciscopress
> > > "Building Scalable Cisco Networks" book that I'm using. It may be
> > mentioned
> > > in the newer BSCI book, but I doubt it. For the exam, I think the
safest
> > way
> > > is to use the "network" command in EIGRP as it was used before this
> latest
> > > change (by advertising the network number without a mask and
> implementing[colo
r=darkred]
> > > "passive-interface" commands for the subnets that shouldn't be
> > advertised).
> > >
> > > Grey
> > >
> > > "Robert Chen" <rtc0@erols.com> wrote in message
> > > news:bkhtaf$2vh$1@bob.news.rcn.net...
> > > > You can always use VLSM with EIGRP. IGRP and RIP V1 are the only[/color]
two
> > that
> > > > can't.
> > > > "Grey" <bbb@ccc.com> wrote in message
> > > > news:y_OcnTsNi4uWpPaiXTWJig@co
mcast.com...
> > > > > Has anyone noticed that one can now use classless "network"
> statements
> > > in
> > > > > EIGRP? For example:
> > > > >
> > > > > router eigrp 200
> > > > > network 192.168.200.16 255.255.255.240
> > > > >
> > > > > Moreover, you can also configure it like this:
> > > > >
> > > > > router eigrp 200
> > > > > network 192.168.200.16 0.0.0.15
> > > > >
> > > > > In other words, the mask can either be the network mask or the
> > wildcard
> > > > > mask, and it's interpreted the same way by the IOS. In the running
> > > config,
> > > > > the configuration will be this in either case:
> > > > >
> > > > > router eigrp 200
> > > > > network 192.168.200.16 0.0.0.15
> > > > >
> > > > > Classless network statements became available in IOS 12.0(4)T
> > > > >
> > > > > I just tried to use a network mask instead of a wildcard mask in
> OSPF,
> > > and
> > > > > it worked too. The IOS interpreted the following statement:
> > > > >
> > > > > router ospf 200
> > > > > network 192.168.101.0 255.255.255.0
> > > > >
> > > > > as this:
> > > > >
> > > > > router ospf 200
> > > > > network 192.168.101.0 0.0.0.255
> > > > >
> > > > > Does anyone know which format the simulators take in the new BSCI
> exam
> > > > > (642-801)?
> > > > >
> > > > > Thanks,
> > > > >
> > > > > Grey
> > > > >
> >
> >
> >
> > In the current official cisco BSCI course V2.0,
> > the EIGRP wildcard mask IS covered.
> > Assuming one is taking the BSCI exam which
> > coincides with the version 2.0 course material,
> > keep this in mind....
> >
> > -ja
> >
> >
>
>
| |
| One Step Beyond 2003-09-27, 1:25 pm |
| You can use network commands with a mask too under EIGRP. For example you
could do a
network135.135.123.1 0.0.0.0
just like in OSPF. It allows you to be very specific.
OSB
CCIE #11330
"Robert Chen" <rtc0@erols.com> wrote in message
news:bkhtaf$2vh$1@bob.news.rcn.net...
> You can always use VLSM with EIGRP. IGRP and RIP V1 are the only two that
> can't.
> "Grey" <bbb@ccc.com> wrote in message
> news:y_OcnTsNi4uWpPaiXTWJig@co
mcast.com...
> > Has anyone noticed that one can now use classless "network" statements
in
> > EIGRP? For example:
> >
> > router eigrp 200
> > network 192.168.200.16 255.255.255.240
> >
> > Moreover, you can also configure it like this:
> >
> > router eigrp 200
> > network 192.168.200.16 0.0.0.15
> >
> > In other words, the mask can either be the network mask or the wildcard
> > mask, and it's interpreted the same way by the IOS. In the running
config,
> > the configuration will be this in either case:
> >
> > router eigrp 200
> > network 192.168.200.16 0.0.0.15
> >
> > Classless network statements became available in IOS 12.0(4)T
> >
> > I just tried to use a network mask instead of a wildcard mask in OSPF,
and
> > it worked too. The IOS interpreted the following statement:
> >
> > router ospf 200
> > network 192.168.101.0 255.255.255.0
> >
> > as this:
> >
> > router ospf 200
> > network 192.168.101.0 0.0.0.255
> >
> > Does anyone know which format the simulators take in the new BSCI exam
> > (642-801)?
> >
> > Thanks,
> >
> > Grey
> >
> >
>
>
|
|
|
|
|