[j-nsp] routing problem

[Erol KAHRAMAN]

hi, i can create second VRRP group and set my routers master for each group.
But i am not sure that i can choose VRRP1 master for NET_A, and VRRP2 master
for NET_B.
Is it way to doing that ?


On 3/7/06, Piyush Diwedi (GR/EIL) <piyush.diwedi at ericsson.com> wrote:
>
> Try playing with VRRP by making one master for NetA and making Other
> master for Net B
>
> Piyush
>
> -----Original Message-----
> From: juniper-nsp-bounces at puck.nether.net [mailto:
> juniper-nsp-bounces at puck.nether.net] On Behalf Of Erol KAHRAMAN
> Sent: Tuesday, March 07, 2006 1:42 PM
> To: Rafal Szarecki (WA/EPO)
> Cc: juniper-nsp at puck.nether.net
> Subject: Re: [j-nsp] routing problem
>
> First of all thank you for your response,
>
> 1. IP1 and IP2 are my externel BGP neighbours.
> 2. I was created external bgp group for my IP1 and IP2 neighbours. I was
> created internal bgp group for  my routers,also. So i am announcing my
> routes to each router in my internal bgp group. I can see two routes for
> NET_A or NET_B from my routers.
> 3. It is impossible to use localpref settings. Because, i have nearly 7000
> networks that i should change their prefferences.
>
> So i have no solution for my problem,yet.
>
> On 3/6/06, Rafal Szarecki (WA/EPO) <rafal.szarecki at ericsson.com> wrote:
> >
> > Erol,
> >
> > I understand that you want to configure you routers in way which use
> > R2 to access NET_B and NET_A via R1.
> > This can be simply done by adjusting local preference (other
> > possibilities also exist).
> > So, on R2 write policy whicsh match NET_B and set local preference to
> > 150 (higher is better). Then apply this policy on external group as
> import.
> > On R1 write policy whicsh match NET_A and set local preference to 150
> > (higher is better). Then apply this policy on external group as import.
> >
> > Please Note that traffic from MYNET to NET_B will go via R1 (because
> > of VRRP mastership), then R2 because of routing. (ICMP redirects can
> > opimize this forwarding for subsequent packets, but ICMP redirects are
> > also potential security holes, so it can be turn off on hosts and
> > servers[
> > http://www.tweakxp.com/article37152.aspx])
> >
> > Your routing table should looks like:
> >
> > Routes from R1;
> >
> > (NET_B)/23   *[BGP/170] 00:01:49, localpref 150, from R2
> >                        AS path: 851 167 I
> >                      > to (IP2) via e1-0/3/1.0
> >                      [BGP/170] 2d 20:38:41, localpref 100
> >                        AS path: 121 851 167 I
> >                      > to (IP1) via e1-0/3/1.0
> >
> > Routes from R2;
> >
> > (NET_A)/23  *[BGP/170] 00:11:10, localpref 150, from R1
> >                        AS path: 121 12978 I
> >                      > to (IP1) via e1-0/3/0.0
> >                      [BGP/170] 06:07:33, localpref 100
> >                        AS path: 851 121 12978 I
> >                      > to (IP2) via e1-0/3/0.0
> >
> > Rafał Jan Szarecki JNCIE #136
> > Senior Consultant - Datacom Networks
> > Ericsson Poland EPO/S/D
> > Office: +48 22 6916635
> > ECN:    837 6635
> > Mobile: +48 602418971
> > Skype: callto://Rafal_Szarecki <callto://Rafal_Szarecki/>
> >
> >
> >
> > > -----Original Message-----
> > > From: juniper-nsp-bounces at puck.nether.net
> > > [mailto:juniper-nsp-bounces at puck.nether.net] On Behalf Of Erol
> > > KAHRAMAN
> > > Sent: Monday, March 06, 2006 1:34 PM
> > > To: juniper-nsp at puck.nether.net
> > > Subject: [j-nsp] routing problem
> > >
> > > Hi everybody,
> > >
> > > I have two m7i boxes. And my topology is as follows. I have external
> > > and internal BGP groups. My router1 is master in VRRP group.  When i
> > > am trying to go to NET_B the connection is established from R1. Is
> > > it possible to go to NET_A from R1 and go to NET_B from R2.
> > > When i look at my routing table on R1 i see that, both routes point
> > > the R1.
> > > What could be the wrong.
> > >
> > >                             |---------Router1 ------(IP1) WAN
> > > Cloud---NET_A
> > >                             |
> > > MYNET---Switch---|(VRRP)
> > >                             |
> > >                             |---------Router2 ------(IP2) WAN
> > > Cloud---NET_B
> > >
> > > Routes from R1;
> > >
> > > (NET_B)/23   *[BGP/170] 00:01:49, localpref 100, from R2
> > >                       AS path: 851 167 I
> > >                     > to (IP1) via e1-0/3/1.0
> > >                     [BGP/170] 2d 20:38:41, localpref 100
> > >                       AS path: 121 851 167 I
> > >                     > to (IP1) via e1-0/3/1.0
> > >
> > > Routes from R2;
> > >
> > > (NET_A)/23  *[BGP/170] 00:11:10, localpref 100, from R1
> > >                       AS path: 121 12978 I
> > >                     > to (IP2) via e1-0/3/0.0
> > >                     [BGP/170] 06:07:33, localpref 100
> > >                       AS path: 851 121 12978 I
> > >                     > to (IP2) via e1-0/3/0.0
> > >
> > > --
> > > Erol KAHRAMAN
> > > System Network Administrator
> > > _______________________________________________
> > > juniper-nsp mailing list juniper-nsp at puck.nether.net
> > > http://puck.nether.net/mailman/listinfo/juniper-nsp
> > >
> >
>
>
>
> --
> Erol KAHRAMAN
> System Network Administrator
> _______________________________________________
> juniper-nsp mailing list juniper-nsp at puck.nether.net
> http://puck.nether.net/mailman/listinfo/juniper-nsp
>



--
Erol KAHRAMAN
System Network Administrator