last night we had an issue with one of our servers, basically I have 2 core switches using vrrp, we have remote sites that come into the office, this traffic then hits the core switches, then to the server. what was happening is that everything on the lan locally on the core seems ok on the active router, but the wan traffic comes into the backup master router. The server is a cluster and has an alias address, from the wan we can ping the real addresses but not the alias, but from the lans locally it seems fine. One thing I noticed is that the alias arp entry was missing from one of the core routers, the one where it comes in from the wan.
The only way I got it working was to run a ping from the core switch to the server, this then put the arp entry back in the cache. but when I ping from the wan its almost like its not arping!!
the servers are in different rooms in a cluster, and on this site they are some Nortel Passports (not cisco i know :-) , i have tried to add the static arp entry on them but it looks liek you have to assign it to a layer 3 port, you cant add them using a L3 vlan, I wonder why this is...
Yes I know this, the central router as the Nortel passport, it wont let me add them unless the interface is L3, I think my only option is the turn off the backup master function on my vrrp backup, Nortel have a feature where the Backup master can also route if the traffic hits there first, this shoudl resolve the issue!!
Question We run asr9001 with XR 6.1.3, and we have a very long delay to
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Introduction The purpose of this document is to demonstrate the Open
Shortest Path First (OSPF) behavior when the V-bit (Virtual-link bit) is
present in a non-backbone area. The V-bit is signaled in Type-1 LSA only
if the router is the endpoint of one or ...
Hi, I am seeing quite a few issues with patch install and wanted to
share my experience and workaround to this. Login to admin via CLI, then
access root with the “shell” command Issue “df –h” and you’ll probably
see the following directory full or nearly ...