hi! i've 2 6509(catos) with 2 links that are connected to our corporate office. Currently we encounter slow internet access for vlan that go throuth core2 wherease it's fast for those vlan that go through core1. Within our intranet, access to our internal portal is fast. So it's defintely no issue wiht the internal network.
i also did a traceroute to our corporate proxy and it's able to hit the proxy (for both core 1 n 2) wihout any delay.
when i disable the port on our core 2 that's connected to our corporate switch (LAN), all the PCs are automatically switch over to go through the link on core1 n internet access is fast.
I've also checked the bandwidth utilization for both of our link to our corporate sw, utilization is low. all the modules and interface are with ok status.
This actually happened previously, and it worked fine after i resetted both the core sw + sometimes by shutting down and no shut for the vlan interface for the 2 link to corporate sw, but it doesn't seems to work this time.
can anyone advise on how can i troubleshoot on this?