8. Foundry Configuration Hints
The following fragment of configuration gives an idea of how to configure a Foundry (BigIron) device. Depending on the actual role of the device (router or switch between router and AMS-IX) and the type of code loaded into the device you may need to mix and match a little here.
! Define a single-port VLAN for the AMS-IX port vlan number name "AMS-IX" by port no spanning-tree untagged ethernet i/f ! Configure the AMS-IX interface interface ethernet i/f port-name "AMS-IX" ! Behave as a router. route-only no spanning-tree ! Don't do IPv6 ND-RA (Router Advertisements) ipv6 nd suppress-ra ! No weird discovery proto, please. no vlan-dynamic-discovery ! IP address ip address 195.69.14X.Y 255.255.254.0 ! No redirects no ip redirect no ipv6 redirect ! AMS-IX recommends 2 hour ARP timeouts ip arp-age 120 ! For fast-ethernet: no autoconfig. speed-duplex 100-full |
8.1. Foundry Aggregated Links
BigIron JetCore-based switches support link aggregation only on adjacent ports. The first port must be oddly numbered, and the other port must directly follow the first one. The same goes for any additional pairs of ports in an aggregated link.
 | On BigIron 15000 switches you cannot build trunks with ports on blade 8, or spanning ports on both sides of slot 8. |
! Create an aggregate on a Jet-Core based switch trunk server ethernet slot/port to slot/port+1 |
BigIron RX or NetIron MLX/XMR switches don't have limits to port placement for aggregated links. Ports can be non-adjacent or even distributed over multiple blades. BigIron RX has a limit of 8 ports per aggregated link, NetIron MLX/XMR raise this to 16 in software 3.5.0, 32 in 3.8.0
! Create an aggregate on a RX/MLX/XMR switch trunk ethe slot/port to slot/port ethe otherslot/otherport to otherslot/otherport |
8.2. Foundry 10GE Specifics
Foundry supports a feature called BGP Graceful Restart that, if all peers support it, will reduce the impact of prefix flaps but the CPU will still have to re-establish any flapped BGP session before the configured interval passes.
In software version 2.3.00 for RX delay-link-event was introduced, which can make the router ignore short link flaps. This command is billed as applying only to VSRP, though; therefore, we suggest to leave fast-external-fallover in its default state.