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trouble with basic ospf + vrrp

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mooseoner

Technical User
May 12, 2010
2
US
I have 2 6509's which I am setting up with OSPF and VRRP.
We have a sup 720 in each one running the following
version of IOS:

s72033-ipservices_wan-mz.122-18.SXF16.bin

I am having issues a basic OSPF. Its a pretty simple design
and yet I still cannot get traffic to route. I am including a few bits from the config. The point to point link comes up and I am able to ping the other switches routing interface, but I cannot ping the other ip addresses in different subnets of the same switches.

I have a bunch of Nortel switches hanging off these 6509's in the 137.135.12.0/24 subnet and they cannot communicate with each other over the point to point routed links.

Is there anything I am overlooking? Any helps or tips greatly appreciated.


From Switch 1:

interface GigabitEthernet2/1
ip address 137.135.10.1 255.255.255.252
ip ospf priority 10
vrrp 1 ip 137.135.10.1
!
interface Vlan1
ip address 137.135.12.10 255.255.255.0
!
router ospf 100
log-adjacency-changes
network 137.135.10.0 0.0.0.3 area 0
network 137.135.12.0 0.0.0.255 area 0
network 137.135.0.0 0.0.255.255 area 0
!



From Switch2:

interface GigabitEthernet1/1
ip address 137.135.10.2 255.255.255.252
ip ospf priority 5
vrrp 1 ip 137.135.10.1
!
interface Vlan1
ip address 137.135.12.14 255.255.255.0
!
router ospf 100
log-adjacency-changes
network 137.135.10.0 0.0.0.3 area 0
network 137.135.12.0 0.0.0.255 area 0
network 137.135.0.0 0.0.255.255 area 0
!
 
More info, like a topology, would help.

/

tim@tim-laptop ~ $ sudo apt-get install windows
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Couldn't find package windows...Thank Goodness!
 
mooseoner - Switch1 interface Gi2/1 should have a unique IP address. The VRRP IP cannot share the same address as an interface.
 
If i could smack you virtually i would. Do you think he has two 6509's just sitting waiting for someone to respond to his Tek-tips post 2 months later. DO NOT BRING UP DEAD TOPICS!

CCNP
 
Don't you need to configure VRRP for each subnet that you want routed?

In other words VRRP on VLAN1.
 
To answer Vince, it is common practice to assign HSRP/VRRP groups on a per-vlan basis (ie: assigning groups to vlan SVI's), since each vlan would usually correspond with a given subnet, and each subnet would have a different default gateway IP, but it's not a strict requirement. You physically can have multiple vlans associated with a single subnet, and associate them with a single group, but that's not done in most situations.

I'll stop talking now ISPKing. :)

CCNP, CCDP
 
I guess we'd have to see the rest of his config to understand wht he's doing.

Either way, it looks like he had his Nortel hat on when configuring his 6500s: Nortel VRRP is configured the way he's tried configuring the 6500s - Cisco requires a 3rd IP address.
 
VRRP in general requires that the group IP be unique. At least, I can't see how it wouldn't require that.

CCNP, CCDP
 
mooseoner if you can post a config ...
thanks,


We must go always forward, not backward
always up, not down and always twirling twirling towards infinity.
 
Quadratic, here's a Nortel config sample, showing they only use two for their take on VRRP:

Master:
vlan 87
name "LAZARUS"
ip address 10.7.87.1 255.255.255.0
tagged D21,Trk4
exit
vlan 87
vrrp vrid 87
owner
virtual-ip-address 10.7.87.1 255.255.255.0
priority 255
enable
exit
exit

Backup:
vlan 87
name "LAZARUS"
ip address 10.7.87.2 255.255.255.0
tagged D21,Trk4
exit
vlan 87
vrrp vrid 87
backup
virtual-ip-address 10.7.87.1 255.255.255.0
enable
exit
exit
 
Hmm... I just went through RFC 3768, and I guess it doesn't explicitly say you can't do it that way, but I've never seen it done before.

CCNP, CCDP
 
I was surprised, too.

And I've mis-led you anyway, the above config was VRRP off a *Procurve* switch.

Here is how Nortel do it, with 3 addresses:

MASTER
vlan 10 ip create 172.16.10.2/255.255.255.0
vlan 10 ip vrrp 10 address 172.16.10.1
vlan 10 ip vrrp 10 adver-int 10
vlan 10 ip vrrp 10 holddown-timer 30
vlan 10 ip vrrp 10 enable

BACKUP:
vlan 10 ip create 172.16.10.3/255.255.255.0
vlan 10 ip vrrp 10 address 172.16.10.1
vlan 10 ip vrrp 10 adver-int 10
vlan 10 ip vrrp 10 backup-master enable
vlan 10 ip vrrp 10 priority 90
vlan 10 ip vrrp 10 enable

 
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