Users Guide
Figure 122. Sample Conguration for a VLT Proxy Gateway
• The above gure shows a sample VLT Proxy gateway scenario. There are no diagonal links in the square VLT connection between the C
and D in VLT domain 1 and C1 and D1 in the VLT domain 2. This causes sub-optimal routing with the VLT Proxy Gateway LLDP method.
For VLT Proxy Gateway to work in this scenario you must congure the VLT-peer-mac transmit command under VLT Domain
Proxy Gateway LLDP mode, in both C and D (VLT domain 1) and C1 and D1 (VLT domain 2). This behavior is applicable only in the LLDP
conguration and not required in the static conguration.
Sample Conguration
Dell(conf-vlt-domain)#proxy-gateway lldp
Dell(conf-vlt-domain-pxy-gw-lldp)#vlt-peer-mac transmit
• Assume the inter-chassis link (ICL) between C1 and D1 is shut and if D1 is the secondary VLT, one half of the inter DC link goes down.
After VM motion, if a packet reaches D2 with the destination MAC address of D1, it may be dropped. This behavior is applicable only in
an LLDP conguration; in a static conguration, the packet is forwarded.
• Any L3 packet, when it gets an L3 hit and is routed, it has a time to live (TTL) decrement as expected.
• You can disable the VLT Proxy Gateway for a particular VLAN using an "Exclude-VLAN" conguration. The conguration has to be done
in both the VLT domains [C and D in VLT domain 1 and C1 and D1 in VLT domain 2].
Sample Conguration LLDP Method
Dell(conf-vlt-domain)#proxy-gateway ll
Dell(conf-vlt-domain-pxy-gw-lldp)#peer-domain-link port-channel 1 exclude-vlan 10
816
VLT Proxy Gateway