12 bridging atm – Lexmark IBM 9077 User Manual

Page 172

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154

IBM 9077 SP Switch Router: Get Connected to the SP Switch

PVC ga030 0/32 proto=vcmux_bridge,ether

PVC ga030 0/33 proto=vcmux_bridge,ether_fcs

PVC ga030 0/34 proto=vcmux_bridge,bpdu

# PVC for IP (RFC 1577)

PVC ga030 0/35 proto=llc

Note:

IP routed traffic is transmitted on its own PVC. If the separate IP

PVC were not defined, then routed IP datagrams would be encapsulated
as Ethernet frames.

4.6.11.5 Configuration for ARP Service - grarp.conf
If needed, supply IP-to-physical address mapping information for ARP
service.

Put an entry into /etc/grarp.conf

only if the remote destination does not

support InATMARP, which the GRF does.

A sample entry would be:

#[ifname] host hwaddr [temp] [pub] [trail]

ga020 172.0.130.111 0/32

4.6.11.6 Installing Configuration Changes

When you enter configuration information or make changes, you must do a

grwrite

command to save the /etc directory to permanent storage. In the CLI,

or from the UNIX shell, enter

grwrite -v.

You must also reset the media card for the changes to take place. Type

grreset <slot_number>.

Note: We found that

grreset

would not be enough to get things up correctly,

especially if the interfaces were already in use before.

We recommend using

grwrite -v,

followed by

reboot -i

.

Do not start hunting for bugs before you have tried these two commands.

4.6.12 Bridging ATM

The information in the previous chapter was used in implementing bridging
with two ATM ports between two GRFs; see Section 7.1.2, “ATM OC-3c
Backbone - Using Two Ports” on page 215.

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