Find all needed information about Cisco 3750 Gre Tunnel Support. Below you can see links where you can find everything you want to know about Cisco 3750 Gre Tunnel Support.
https://community.cisco.com/t5/switching/gre-tunnels-with-3750-switches/td-p/1716692
The General Routing Encapsulation (GRE) tunnel is not supported by the Cisco Catalyst 3750 Series Switches. Even though this feature can be configured with CLI, the packets can be neither switched by hardware, nor by software, which increases the CPU utilization.
https://community.cisco.com/t5/switching/3750x-and-gre-tunnel-termination-in-hardware/td-p/1748255
The Cisco Catalyst 3750 Series can switch "transient" GRE tunneled traffic in hardware at wire-rate but it cannot act as GRE tunnel end-points. Labels: Other Switching
https://www.cisco.com/c/en/us/support/docs/switches/catalyst-3750-series-switches/68461-high-cpu-utilization-cat3750.html
Jun 26, 2009 · The General Routing Encapsulation (GRE) tunnel is not supported by the Cisco Catalyst 3750 Series Switches. Even though this feature can be configured with CLI, the packets can be neither switched by hardware, nor by software, which increases the CPU utilization.
https://community.cisco.com/t5/switching/cisco-catalyst-3750-gre-tunnel-keepalive-retry-count-cannot-be/td-p/2525258
Solved: Hi everybody, in my production environment I have several Catalyst 3750-48PS stacks running IOS c3750-ipservicesk9-mz.122-55.SE9.bin (latest version as of today). IP Routing is enabled on these switches and several point-to-point GRE tunnels
https://community.cisco.com/t5/switching/3850-gre-support-in-hardware/td-p/2402487
"GRE tunneled packets switched on hardware—Support for forwarding GRE tunneled packets on the switch hardware." does not sound like the tunnel is HW processed, it sounds for me like " if this switch is in the middle and a GRE tunnel cross trough the device is capable to HW process the tunnel traffic".
https://community.cisco.com/t5/other-network-architecture/gre-tunnel-on-a-cisco-3750/td-p/252596
Many thanks for your reply. I am however a little confused by it. I am using layer 3 GRE tunnels and not layer 2 802.1q tunnels. After reading it i think it may be possible that some of the principles may be related in the way that the switch handles the tunnel but it makes me no clearer on why this was happening, and how to remedy it.
https://community.cisco.com/t5/vpn-and-anyconnect/ipsec-tunnel-on-cisco-3750-switch/td-p/1133258
Solved: Guys... Just wanted to know ,is it possible to configure/terminate ipsec vpn tunnel on cisco 3750 switch. Thanks in advance. Find A Community. Buy or Renew. Find A Community ... 2960 (Stackable and None). We want to implement Cisco ISE 2.6 version. We are unable to upgrade the switches due to support contracts and EOL. Does cisco ISE ...
https://community.cisco.com/t5/routing/tunnel-gre-on-catalyst-3560-3750/td-p/702756
The catalyst 3750's do not officially support GRE's, which means u can get the commands but there will be no support for this technology... anyway, even if it supports in future, i would not advice you to run it here, since the 3750's have not been designed for this function.. each device has to do what it is supposed to !!! so the cheap and the efficient option is to buy a small router, which can do this !!!
https://www.cisco.com/c/en/us/tech/ip/ip-tunneling/tech-configuration-examples-list.html
Configuring the Cisco VPN 5000 and a Router to Open a GRE Tunnel 02/May/2008; GRE over IPSec with EIGRP to Route Through a Hub and Multiple Remote Sites Configuration Example 14/Jan/2008; IPSec/GRE with NAT on IOS Router Configuration Example 29/Aug/2008; Multicast over a GRE Tunnel …
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