01-05-2005 01:23 PM
This is my problem :
I have one management site and 3 other sites, site A,B and C. The management site is represented by one VRF and is located on the router(made up of 3 loopback addresses, no physical interfaces, the site is located on one of the routers participating in the mpls domain). The 3 sites are fully meshed to each other in a "simple" VPN topology.
The management site is used only to telnet the other sites so only one prefix will be advertised to each site. The following prefixes is advertised:
To site A: 1.1.1.1/32 RT 100:100 tag 19 (vrf NMC)
To site B: 2.2.2.2/32 RT 100:101 tag 20 (vrf NMC)
to site C: 3.3.3.3/32 RT 100:102 tag 21 (vrf NMC)
I have checked and confirmed that each prefix is installed in the approriate site. When doing this i can only telnet or ping site A and by doing a debug i found the source of the problem. The source address when sending a packet is prefix 1.1.1.1/32(First loopback interface, normally would have been outgoing physical interface) which only site A
has installed in its route table. I could easily have solved the connectivity problem by advertising prefix 1.1.1.1/32 to site B and C or by assigning the loopback interfaces to different VRF's. What i want to achieve is to pin the source address to a route target and a loopback interface so that when sending a packet to site B the source prefix is 2.2.2.2/32 and when sending to site C the source prefix is 3.3.3.3/32.
Solved! Go to Solution.
01-06-2005 08:11 AM
Have you tried:
telnet
telnet
Hope this helps,
01-06-2005 08:11 AM
Have you tried:
telnet
telnet
Hope this helps,
01-06-2005 09:19 AM
Thank you. Is it possible to specify source interface when doing a ping or to change the source interface on a permanent basis ?
01-06-2005 10:15 AM
It is certainly possible when doing a ping:
r8#ping vrf NMC
Protocol [ip]:
Target IP address: 9.9.9.9
Repeat count [5]:
Datagram size [100]:
Timeout in seconds [2]:
Extended commands [n]: y
Source address or interface: 2.2.2.2
Unfortunately, I don't know of any way you could change the source address selection permanently based on which destination address the traffic is directed.
Hope this helps,
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