From: Brian S turner (brian@xxxxxxxxxxxxxxxxx)
Date: Thu Aug 17 2000 - 11:59:47 GMT-3
yep that all sounds good.
Of course you have to also have the
bridge irb
command.
here is what I have on IRB
IRB Allows you to bridge and route the same IP pack
et on a router. Where
in the CRB example the 10.0.0.1 network wouldn't
be able to ping 10.1.0.1 or 10.2.0.1 because e
thernet 2 wouldn't allow
the packet to get to the routing engine, IRB creates
VIRTUAL interface that you can assign all the L
3 properties that will be
applied to the entire bridge group.
bridge irb Turn on IRB
bridge 1 protocol ieee Turn on IEEE spanning t
ree
bridge 1 route ip Tell the BVI which pack
ets to transfer to the Routing
engine
interface bvi 1 Create the Bridge Virtual Inter
face, and Assign L3
properties to the bridge group
Interface ethernet 0
bridge-group 1
ie interface ethernet 0/0
bridge-group 1
interface ethernet 0/1
bridge-group 1
interface ethernet 0/3
ip address 10.1.0.1 255.255.255.0
interface ethernet 0/4
ip address 10.2.0.1 255.255.255.0
interface bvi 1
ip address 10.0.0.1 255.255.255.0
!
bridge irb
!
bridge 1 protocol ieee
bridge 1 route ip
watch the word wrap!!
Brian
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
Matt Lachberg 3
Sent: Wednesday, August 16, 2000 10:41 AM
To: ccielab@groupstudy.com
Subject: FW: IRB question (2nd attempt)
Well since nobody responded back the first time (kind of like the proctor
after I begged her for my CCIE # at my first failed attempt) I thought may
be throwing it in everyone's face again I would get a response this time :)
Matthew Lachberg, CCNP, CCDP, MCSE
-----Original Message-----
From: Matthew Lachberg [mailto:cisco@datastreet.com]
Sent: Tuesday, August 15, 2000 9:58 AM
To: 'ccielab@groupstudy.com'
Subject: IRB question
Here is a scenario:
Host1-----(E0) R1 (E1)------ Host2
10.0.0.3/24 (E2) 10.0.0.2/24
10.0.1.2/24
|
|
Host3
10.0.1.1/24
What I want to accomplish is bridging IP from host 1(10.0.0.3) to host 2
(10.0.0.2) and enabling routing for both these hosts to host 3 (10.0.1.1).
#1 Can I do this with IRB, (I know if this can be done, I need to use IRB
/w BVI)
#2 Assuming #1 is yes, and I create a BVI w/ IP address 10.0.0.1/24. Is
the following combination correct:
bridge 1 route ip
bridge 1 bridge ip (on by default)
What has to happen in the end is I am able to ping from host 1 to 2 (via
bridging) and ping host 3 (via routing) through my default gateway (The BVI)
Matthew Lachberg, CCNP, CCDP, MCSE formally MSCE
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