From: Marco Umer (ccie@umer.it)
Date: Sun Jul 13 2003 - 18:16:55 GMT-3
Hi,
I was trying some VRF instances in my LAB to increase the number of routers
available for the tests and I found something quite strange that I would
like to share and find out if you have seen it before.
Quite simple ISDN configuration between two routers:
router A
interface BRI0/0
ip vrf forwarding vrf3
ip address 10.0.8.1 255.255.255.0
encapsulation ppp
dialer idle-timeout 20
dialer string 20
dialer-group 1
isdn switch-type basic-net3
isdn answer1 22
isdn calling-number 22
ppp authentication pap
ppp pap sent-username pap password 0 xxx
Router B
interface BRI0/0
ip vrf forwarding vrf1
ip address 10.0.8.2 255.255.255.0
encapsulation ppp
dialer string 22
dialer-group 1
isdn switch-type basic-net3
isdn answer1 20
isdn calling-number 20
ppp authentication pap
ppp pap sent-username pap password 0 xxx
One of the two router has a VRF forwarding configured.
The ISDN works fine but the strange thing that I was loosing 50% of the
packet when I was trying a ping.
I checked routing table and cef table but they are fine
part of the cef table (mirror on the other side)
10.0.8.0/24 attached BRI0/0
10.0.8.0/32 receive
10.0.8.1/32 attached BRI0/0
10.0.8.2/32 receive
10.0.8.255/32 receive
I created new VRF .... but it was always the same. I tried with the last
Enterprise 12.1, then 12.2 and then 12.3 (on a Cisco 2621).
The 12.3.1a fixed the problem, I can now move the BRI in any kind of
combination with VRF and I have 100% of the packet.
Have you ever seen such problem?
Regards,
Marco
This archive was generated by hypermail 2.1.4 : Wed Aug 06 2003 - 06:52:38 GMT-3