[c-nsp] Quick routing question.

[Craig Pierantozzi]

On Sep 9, 2010, at 12:35 PM, Drew Weaver <drew.weaver at thenap.com> wrote:

> Howdy,
> 
> I currently have two connections to Level3 because I am upgrading, one (the old one) is a 1Gbps connection in Router-1, the second one is a 10Gbps connection in Router-2.
> 
> Both connections are up/up, the old connection is getting a full BGP session from Level3.
> 
> I noticed that no matter what I do, I can't seem to ping Level3's side of our 10Gbps interface on the new connection from either of the 2 routers
> 
> rtr#ping ip
> Target IP address: x.x.x.13
> Repeat count [5]:
> Datagram size [100]:
> Timeout in seconds [2]:
> Extended commands [n]: y
> Source address or interface: x.x.x.14
> Type of service [0]:
> Set DF bit in IP header? [no]:
> Validate reply data? [no]:
> Data pattern [0xABCD]:
> Loose, Strict, Record, Timestamp, Verbose[none]:
> Sweep range of sizes [n]:
> Type escape sequence to abort.
> Sending 5, 100-byte ICMP Echos to x.x.x.13, timeout is 2 seconds:
> .....
> Success rate is 0 percent (0/5)
> 
> I am able to ping their side of the interface from hosts downstream from the routers, just not the routers themselves.
> 
> [root at vmz ~]# ping x.x.x.13
> PING x.x.x.13 (x.x.x.13) 56(84) bytes of data.
> 64 bytes from x.x.x.13: icmp_seq=1 ttl=60 time=3.27 ms
> 64 bytes from x.x.x.13: icmp_seq=2 ttl=60 time=14.9 ms
> 64 bytes from x.x.x.13: icmp_seq=3 ttl=60 time=3.01 ms
> 64 bytes from x.x.x.13: icmp_seq=4 ttl=60 time=3.19 ms
> 64 bytes from x.x.x.13: icmp_seq=5 ttl=60 time=3.10 ms
> 
> I can't really think of any reason why I wouldn't be able to ping their end of the Interface from this router, connectivity is obviously good considering I can ping it from a host downstream from the router.
> 
> Is anyone aware of any sort of gotcha when doing something like this?
> 
> -Drew
> 
> 
> 
> 
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