11-20-2019 05:07 PM
Hi All, Need assistance w.r.t to issue with the enterprise network.
An enterprise network has a C1117 ISR running on 4G (only WAN). Role of the router is to provide connectivity between the controllers and centralized server for the controllers (in data center).
Routing seems ok, no acl blocking any thing though the controllers is not downloading latest image.
What could be the issue?
11-20-2019 05:30 PM
11-20-2019 05:35 PM
11-20-2019 05:59 PM
11-20-2019 06:05 PM
11-20-2019 06:39 PM
11-20-2019 07:05 PM
Port is open, we can even telnet
11-20-2019 07:48 PM
11-20-2019 07:51 PM
Client is downloading the latest image. Size am not sure.
12-17-2019 04:39 AM
Issue seems to be with the MSS value tough I have trouble in determining the MSS size for C1117 router with 4G carriage to solve an issue.
Currently we have MSS set as 1310 and MTU as 1455 on the Cellular interface. We are running IPSEC GETVPN to encrypt the data between the router and aggregate router in DC.
I performed the Ping sweep test with DF set which stops at 1283 bytes. Min Bytes = 1250, max Bytes = 1310
could any one be able to confirm if 1282 bytes is the payload + 20 bytes IP + 20 bytes TCP header summing up to MSS as 1312 bytes or MSS is 1282 bytes?
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